1.
Anchovies as food
–
Anchovies are a family of small, common salt-water forage fish. There are 144 species in 17 genera, found in the Atlantic, Indian, anchovies are usually classified as an oily fish. They are small, green fish with blue reflections due to a longitudinal stripe that runs from the base of the caudal fin. They range from 2 centimetres to 40 centimetres in length. A traditional method of processing and preserving anchovies is to gut and salt them in brine, allow them to mature and this results in a characteristic strong flavor and the flesh turns deep grey. Anchovies pickled in vinegar, as with Spanish boquerones en vinagre, are milder, in Roman times, anchovies were the base for the fermented fish sauce garum. Garum had a long shelf life for long-distance commerce, and was produced in industrial quantities. Anchovies were also eaten raw as an aphrodisiac, today they are used in small quantities to flavor many dishes. Because of the flavor, they are also an ingredient in several sauces, including Worcestershire sauce, remoulade and many fish sauces. For domestic use, anchovy fillets are packed in oil or salt in small tins or jars, Anchovy paste is also available, as is anchovy essence. Fishermen use anchovies as bait for fish, such as tuna. Anchovies are also a pizza topping. The strong taste people associate with anchovies is due to the curing process, fresh anchovies, known in Italy as alici, have a much milder flavor. The European anchovy, Engraulis encrasicolus, is the main commercial anchovy, the anchovy industry along the coast of Cantabria, initiated in Cantabria by Sicilian salters in the mid-19th century, now dwarfs the traditional Catalan salters. The white fillets are sold in heavy salt, or the more popular garlic or tomato oil and vinegar marinade packs. In Southeast Asian countries, anchovies are known as ikan teri in Indonesia, ikan bilis or Setipinna taty in Malaysia and they are usually sold dried, but are also popularly used in fermented condiments like the Philippine bagoong and Malaysian budu. Ikan bilis is normally used in a way to dried shrimp in Malaysian cuisine. In Indonesia, Malaysia, the Philippines and Singapore anchovies are used to make fish stock or are deep fried
Anchovies as food
–
Seller of anchovies in
Piedmont, Italy, 1971
Anchovies as food
–
Dried
Japanese anchovy
Anchovies as food
–
Salted and fermented anchovy (
jeotgal) Korea
Anchovies as food
–
Canned anchovies
2.
Taxonomy (biology)
–
Taxonomy is the science of defining groups of biological organisms on the basis of shared characteristics and giving names to those groups. The exact definition of taxonomy varies from source to source, but the core of the remains, the conception, naming. There is some disagreement as to whether biological nomenclature is considered a part of taxonomy, the broadest meaning of taxonomy is used here. The word taxonomy was introduced in 1813 by Candolle, in his Théorie élémentaire de la botanique, the term alpha taxonomy is primarily used today to refer to the discipline of finding, describing, and naming taxa, particularly species. In earlier literature, the term had a different meaning, referring to morphological taxonomy, ideals can, it may be said, never be completely realized. They have, however, a value of acting as permanent stimulants. Some of us please ourselves by thinking we are now groping in a beta taxonomy, turrill thus explicitly excludes from alpha taxonomy various areas of study that he includes within taxonomy as a whole, such as ecology, physiology, genetics, and cytology. He further excludes phylogenetic reconstruction from alpha taxonomy, thus, Ernst Mayr in 1968 defined beta taxonomy as the classification of ranks higher than species. This activity is what the term denotes, it is also referred to as beta taxonomy. How species should be defined in a group of organisms gives rise to practical and theoretical problems that are referred to as the species problem. The scientific work of deciding how to define species has been called microtaxonomy, by extension, macrotaxonomy is the study of groups at higher taxonomic ranks, from subgenus and above only, than species. While some descriptions of taxonomic history attempt to date taxonomy to ancient civilizations, earlier works were primarily descriptive, and focused on plants that were useful in agriculture or medicine. There are a number of stages in scientific thinking. Early taxonomy was based on criteria, the so-called artificial systems. Later came systems based on a complete consideration of the characteristics of taxa, referred to as natural systems, such as those of de Jussieu, de Candolle and Bentham. The publication of Charles Darwins Origin of Species led to new ways of thinking about classification based on evolutionary relationships and this was the concept of phyletic systems, from 1883 onwards. This approach was typified by those of Eichler and Engler, the advent of molecular genetics and statistical methodology allowed the creation of the modern era of phylogenetic systems based on cladistics, rather than morphology alone. Taxonomy has been called the worlds oldest profession, and naming and classifying our surroundings has likely been taking place as long as mankind has been able to communicate
Taxonomy (biology)
–
Title page of
Systema Naturae, Leiden, 1735
Taxonomy (biology)
–
Evolution of the
vertebrates at class level, width of spindles indicating number of families. Spindle diagrams are typical for
Evolutionary taxonomy
Taxonomy (biology)
–
The same relationship, expressed as a
cladogram typical for
cladistics
Taxonomy (biology)
–
Type specimen for
Nepenthes smilesii, a tropical
pitcher plant.
3.
Animal
–
Animals are multicellular, eukaryotic organisms of the kingdom Animalia. The animal kingdom emerged as a clade within Apoikozoa as the group to the choanoflagellates. Animals are motile, meaning they can move spontaneously and independently at some point in their lives and their body plan eventually becomes fixed as they develop, although some undergo a process of metamorphosis later in their lives. All animals are heterotrophs, they must ingest other organisms or their products for sustenance, most known animal phyla appeared in the fossil record as marine species during the Cambrian explosion, about 542 million years ago. Animals can be divided broadly into vertebrates and invertebrates, vertebrates have a backbone or spine, and amount to less than five percent of all described animal species. They include fish, amphibians, reptiles, birds and mammals, the remaining animals are the invertebrates, which lack a backbone. These include molluscs, arthropods, annelids, nematodes, flatworms, cnidarians, ctenophores, the study of animals is called zoology. The word animal comes from the Latin animalis, meaning having breath, the biological definition of the word refers to all members of the kingdom Animalia, encompassing creatures as diverse as sponges, jellyfish, insects, and humans. Aristotle divided the world between animals and plants, and this was followed by Carl Linnaeus, in the first hierarchical classification. In Linnaeuss original scheme, the animals were one of three kingdoms, divided into the classes of Vermes, Insecta, Pisces, Amphibia, Aves, and Mammalia. Since then the last four have all been subsumed into a single phylum, in 1874, Ernst Haeckel divided the animal kingdom into two subkingdoms, Metazoa and Protozoa. The protozoa were later moved to the kingdom Protista, leaving only the metazoa, thus Metazoa is now considered a synonym of Animalia. Animals have several characteristics that set apart from other living things. Animals are eukaryotic and multicellular, which separates them from bacteria and they are heterotrophic, generally digesting food in an internal chamber, which separates them from plants and algae. They are also distinguished from plants, algae, and fungi by lacking cell walls. All animals are motile, if only at life stages. In most animals, embryos pass through a stage, which is a characteristic exclusive to animals. With a few exceptions, most notably the sponges and Placozoa and these include muscles, which are able to contract and control locomotion, and nerve tissues, which send and process signals
Animal
–
Carl Linnaeus, known as the father of modern
taxonomy
Animal
–
Had'n
Animal
–
The use of
love darts by the land snail
Monachoides vicinus is a form of
sexual selection
Animal
–
A
newt lung cell stained with
fluorescent dyes undergoing the early
anaphase stage of
mitosis
4.
Chordate
–
Chordates are deuterostomes, as during the embryo development stage the anus forms before the mouth. They are also bilaterally symmetric coelomates, in the case of vertebrate chordates, the notochord is usually replaced by a vertebral column during development, and they may have body plans organized via segmentation. There are also additional extinct taxa, the Vertebrata are sometimes considered as a subgroup of the clade Craniata, consisting of chordates with a skull, the Craniata and Tunicata compose the clade Olfactores. Of the more than 65,000 living species of chordates, the worlds largest and fastest animals, the blue whale and peregrine falcon respectively, are chordates, as are humans. Fossil chordates are known from at least as early as the Cambrian explosion, Hemichordata, which includes the acorn worms, has been presented as a fourth chordate subphylum, but it now is usually treated as a separate phylum. The Hemichordata, along with the Echinodermata, form the Ambulacraria, the Chordata and Ambulacraria form the superphylum Deuterostomia, composed of the deuterostomes. Attempts to work out the relationships of the chordates have produced several hypotheses. All of the earliest chordate fossils have found in the Early Cambrian Chengjiang fauna. Because the fossil record of early chordates is poor, only molecular phylogenetics offers a prospect of dating their emergence. However, the use of molecular phylogenetics for dating evolutionary transitions is controversial and it has also proved difficult to produce a detailed classification within the living chordates. Attempts to produce family trees shows that many of the traditional classes are paraphyletic. While this has been known since the 19th century, an insistence on only monophyletic taxa has resulted in vertebrate classification being in a state of flux. Although the name Chordata is attributed to William Bateson, it was already in prevalent use by 1880, ernst Haeckel described a taxon comprising tunicates, cephalochordates, and vertebrates in 1866. Though he used the German vernacular form, it is allowed under the ICZN code because of its subsequent latinization, among the vertebrate sub-group of chordates the notochord develops into the spine, and in wholly aquatic species this helps the animal to swim by flexing its tail. In fish and other vertebrates, this develops into the spinal cord, the pharynx is the part of the throat immediately behind the mouth. In fish, the slits are modified to form gills, a muscular tail that extends backwards behind the anus. This is a groove in the wall of the pharynx. In filter-feeding species it produces mucus to gather food particles, which helps in transporting food to the esophagus and it also stores iodine, and may be a precursor of the vertebrate thyroid gland
Chordate
Chordate
–
Craniate:
Hagfish
Chordate
–
Tunicates: sea squirts
Chordate
–
Cephalochordate:
Lancelet
5.
Actinopterygii
–
Actinopterygii /ˌæktᵻnˌɒptəˈrɪdʒi. aɪ/, or the ray-finned fishes, constitute a class or subclass of the bony fishes. These actinopterygian fin rays attach directly to the proximal or basal skeletal elements, the radials, numerically, actinopterygians are the dominant class of vertebrates, comprising nearly 99% of the over 30,000 species of fish. They are ubiquitous throughout freshwater and marine environments from the sea to the highest mountain streams. Extant species can range in size from Paedocypris, at 8 mm, to the ocean sunfish, at 2,300 kg. Ray-finned fishes occur in variant forms. The main features of a typical ray-finned fish are shown in the diagram at the left. In nearly all ray-finned fish, the sexes are separate, development then proceeds with a free-swimming larval stage. However other patterns of ontogeny exist, with one of the commonest being sequential hermaphroditism, in most cases this involves protogyny, fish starting life as females and converting to males at some stage, triggered by some internal or external factor. This may be advantageous as females become less prolific as they age while male fecundity increases with age, protandry, where a fish converts from male to female, is much less common than protogyny. Most families use external rather than internal fertilization, of the oviparous teleosts, most do not provide parental care. Viviparity is relatively rare and is found in about 6% of teleost species, male territoriality preadapts a species for evolving male parental care. There are a few examples of fish that self-fertilise, the mangrove rivulus is an amphibious, simultaneous hermaphrodite, producing both eggs and spawn and having internal fertilisation. This mode of reproduction may be related to the habit of spending long periods out of water in the mangrove forests it inhabits. Males are occasionally produced at temperatures below 19 °C and can fertilise eggs that are spawned by the female. This maintains genetic variability in a species that is otherwise highly inbred, the earliest known fossil actinopterygiian is Andreolepis hedei, dating back 420 million years. Remains have been found in Russia, Sweden, and Estonia, actinopterygians are divided into the subclasses Chondrostei and Neopterygii. The Neopterygii, in turn, are divided into the infraclasses Holostei and Teleostei, during the Mesozoic and Cenozoic the teleosts in particular diversified widely, and as a result, 96% of all known fish species are teleosts. The cladogram shows the groups of actinopterygians and their relationship to the terrestrial vertebrates that evolved from a related group of fish
Actinopterygii
Actinopterygii
–
Anatomy of a typical ray-finned fish
Actinopterygii
–
Tuna are streamlined for straight line speed with a
deeply forked tail
Actinopterygii
–
The
swordfish is even faster and more streamlined than the tuna
6.
Clupeiformes
–
Clupeiformes is the order of ray-finned fish that includes the herring family, Clupeidae, and the anchovy family, Engraulidae. The group includes many of the most important forage and food fish, clupeiformes are physostomes, which means that the gas bladder has a pneumatic duct connecting it to the gut. They typically lack a line, but still have the eyes, fins and scales that are common to most fish. They are generally silvery fish with streamlined, spindle-shaped, bodies, most species eat plankton which they filter from the water with their gill rakers. s. Sundasalangidae) Subfamily Clupeinae Subfamily Ehiravinae Subfamily Alosinae Subfamily Dorosomatinae Sepkoski, Jack, a compendium of fossil marine animal genera. Archived from the original on 2009-02-20
Clupeiformes
–
Clupeiformes Temporal range:
Late Jurassic to present
7.
Forage fish
–
Forage fish, also called prey fish or bait fish, are small pelagic fish which are preyed on by larger predators for food. Predators include other fish, seabirds and marine mammals. Typical ocean forage fish feed near the base of the chain on plankton. They include particularly fishes of the family Clupeidae, but also small fish, including halfbeaks, silversides, smelt such as capelin. Forage fish compensate for their size by forming schools. Some swim in synchronised grids with their mouths open so they can efficiently filter plankton and these schools can become immense shoals which move along coastlines and migrate across open oceans. The shoals are concentrated fuel resources for the marine predators. The ocean primary producers, mainly contained in plankton, produce energy from the sun and are the raw fuel for the ocean food webs. Forage fish transfer this energy by eating the plankton and becoming food themselves for the top predators, in this way, forage fish occupy the central positions in ocean and lake food webs. The fishing industry catches forage fish primarily for feeding to farmed animals, some fisheries scientists are expressing concern that this will affect the populations of predator fish that depend on them. Herrings are a preeminent forage fish, often marketed as sardines or pilchards, the term “forage fish” is a term used in fisheries, and is applied also to forage species that are not true fish, but play a significant role as prey for predators. Thus invertebrates such as squid and shrimp are also referred to as forage fish, even the tiny shrimp-like creatures called krill, small enough to be eaten by other forage fish, yet large enough to eat the same zooplankton as forage fish, are often classified as forage fish. Forage fish utilise the biomass of copepods, mysids and krill in the zone to become the dominant converters of the enormous ocean production of zooplankton. They are, in turn, central prey items for higher trophic levels, Forage fish may have achieved their dominance because of the way they live in huge, and often extremely fast cruising schools. Though forage fish are abundant, there are few species. There are more species of primary producers and apex predators in the ocean there are forage fish. Forage fish occupy central positions in the food webs. The position that a fish occupies in a web is called its trophic level
Forage fish
–
These small
goldband fusiliers are typical forage fish. They swim in large schools for protection from larger predators.
Forage fish
–
Ocean forage fish
Forage fish
Forage fish
8.
Family (biology)
–
In biological classification, family is one of the eight major taxonomic ranks, it is classified between order and genus. A family may be divided into subfamilies, which are intermediate ranks above the rank of genus. In vernacular usage, a family may be named one of its common members, for example, walnuts and hickory trees belong to the family Juglandaceae. What does or does not belong to a family—or whether a family should be recognized at all—are proposed and determined by practicing taxonomists. There are no rules for describing or recognizing a family. Taxonomists often take different positions about descriptions of taxa, and there may be no broad consensus across the community for some time. Some described taxa are accepted broadly and quickly, but others only rarely, if at all, the naming of families is codified by various international codes. In zoological nomenclature, the names of animals end with the suffix -idae. The concept of rank at time was not yet settled, and in the preface to the Prodromus Magnol spoke of uniting his families into larger genera. Carolus Linnaeus used the word familia in his Philosophia botanica to denote groups of plants, trees, herbs, ferns, palms. He used this term only in the section of the book. In zoology, the family as an intermediate between order and genus was introduced by Pierre André Latreille in his Précis des caractères génériques des insectes. He used families in some but not in all his orders of insects, families can be used for evolutionary, palaeontological and generic studies because they are more stable than lower taxonomic levels such as genera and species
Family (biology)
–
The hierarchy of
biological classification 's eight major
taxonomic ranks. An
order contains one or more families. Intermediate minor rankings are not shown.
9.
Black Sea
–
The Black Sea is a body of water between Eastern Europe and Western Asia, bounded by Bulgaria, Georgia, Romania, Russia, Turkey, and Ukraine. It is supplied by a number of rivers, such as the Danube, Dnieper, Rioni, Southern Bug. The Black Sea has an area of 436,400 km2, a depth of 2,212 m. It is constrained by the Pontic Mountains to the south and by the Caucasus Mountains to the east, the longest east-west extent is about 1,175 km. The Black Sea has a water balance, that is, a net outflow of water 300 km3 per year through the Bosphorus. Mediterranean water flows into the Black Sea as part of a two-way hydrological exchange, the Black Sea drains into the Mediterranean Sea and then the Atlantic Ocean, via the Aegean Sea and various straits. The Bosphorus Strait connects it to the Sea of Marmara, and these waters separate Eastern Europe and Western Asia. The Black Sea is also connected to the Sea of Azov by the Strait of Kerch, the water level has varied significantly. Due to these variations in the level in the basin. At certain critical water levels it is possible for connections with surrounding water bodies to become established and it is through the most active of these connective routes, the Turkish Straits, that the Black Sea joins the world ocean. When this hydrological link is not present, the Black Sea is a basin, operating independently of the global ocean system. Currently the Black Sea water level is high, thus water is being exchanged with the Mediterranean. The Turkish Straits connect the Black Sea with the Aegean Sea, and comprise the Bosphorus, the Sea of Marmara, the International Hydrographic Organization defines the limits of the Black Sea as follows, On the Southwest. The Northeastern limit of the Sea of Marmara, a line joining Cape Takil and Cape Panaghia. Strabos Geographica reports that in antiquity, the Black Sea was often just called the Sea, for the most part, Graeco-Roman tradition refers to the Black Sea as the Hospitable sea, Εὔξεινος Πόντος Eúxeinos Póntos. This is a euphemism replacing an earlier Inhospitable Sea, Πόντος Ἄξεινος Póntos Áxeinos, strabo thinks that the Black Sea was called inhospitable before Greek colonization because it was difficult to navigate, and because its shores were inhabited by savage tribes. The name was changed to hospitable after the Milesians had colonized the southern shoreline and it is also possible that the epithet Áxeinos arose by popular etymology from a Scythian word axšaina- unlit, dark, the designation Black Sea may thus date from antiquity. A map of Asia dating to 1570, entitled Asiae Nova Descriptio, from Abraham Orteliuss Theatrum Orbis Terrarum, english-language writers of the 18th century often used the name Euxine Sea to refer to the Black Sea
Black Sea
–
The Black Sea in
Batumi,
Georgia
Black Sea
–
Black Sea
Black Sea
–
The port of the Black Sea in
Yevpatoria,
Crimea
Black Sea
–
Swallow's Nest in
Crimea
10.
Mediterranean Sea
–
The sea is sometimes considered a part of the Atlantic Ocean, although it is usually identified as a separate body of water. The name Mediterranean is derived from the Latin mediterraneus, meaning inland or in the middle of land and it covers an approximate area of 2.5 million km2, but its connection to the Atlantic is only 14 km wide. The Strait of Gibraltar is a strait that connects the Atlantic Ocean to the Mediterranean Sea and separates Gibraltar. In oceanography, it is called the Eurafrican Mediterranean Sea or the European Mediterranean Sea to distinguish it from mediterranean seas elsewhere. The Mediterranean Sea has a depth of 1,500 m. The sea is bordered on the north by Europe, the east by Asia and it is located between latitudes 30° and 46° N and longitudes 6° W and 36° E. Its west-east length, from the Strait of Gibraltar to the Gulf of Iskenderun, the seas average north-south length, from Croatia’s southern shore to Libya, is approximately 800 km. The Mediterranean Sea, including the Sea of Marmara, has an area of approximately 2,510,000 square km. The sea was an important route for merchants and travelers of ancient times that allowed for trade, the history of the Mediterranean region is crucial to understanding the origins and development of many modern societies. In addition, the Gaza Strip and the British Overseas Territories of Gibraltar and Akrotiri, the term Mediterranean derives from the Latin word mediterraneus, meaning amid the earth or between land, as it is between the continents of Africa, Asia and Europe. The Ancient Greek name Mesogeios, is similarly from μέσο, between + γη, land, earth) and it can be compared with the Ancient Greek name Mesopotamia, meaning between rivers. The Mediterranean Sea has historically had several names, for example, the Carthaginians called it the Syrian Sea and latter Romans commonly called it Mare Nostrum, and occasionally Mare Internum. Another name was the Sea of the Philistines, from the people inhabiting a large portion of its shores near the Israelites, the sea is also called the Great Sea in the General Prologue by Geoffrey Chaucer. In Ottoman Turkish, it has also been called Bahr-i Sefid, in Modern Hebrew, it has been called HaYam HaTikhon, the Middle Sea, reflecting the Seas name in ancient Greek, Latin, and modern languages in both Europe and the Middle East. Similarly, in Modern Arabic, it is known as al-Baḥr al-Mutawassiṭ, in Turkish, it is known as Akdeniz, the White Sea since among Turks the white colour represents the west. Several ancient civilisations were located around the Mediterranean shores, and were influenced by their proximity to the sea. It provided routes for trade, colonisation, and war, as well as food for numerous communities throughout the ages, due to the shared climate, geology, and access to the sea, cultures centered on the Mediterranean tended to have some extent of intertwined culture and history. Two of the most notable Mediterranean civilisations in classical antiquity were the Greek city states, later, when Augustus founded the Roman Empire, the Romans referred to the Mediterranean as Mare Nostrum
Mediterranean Sea
–
Circa the 6th century BCE: In ancient times the Mediterranean provided sources of food and local commerce and direct routes for trade and communications, colonisation, and war. Numerous cities and colonies were situated at its shores or within the basin: Greek (red) and Phoenician (yellow)
colonies in antiquity; and other cities (grey), including the provincial
"Rom".
Mediterranean Sea
–
Map of the Mediterranean Sea
Mediterranean Sea
–
With its highly indented coastline and large number of islands, Greece has the longest Mediterranean coastline.
Mediterranean Sea
–
The
Battle of Lepanto, 1571, ended in victory for the European
Holy League against the Ottoman Turks.
11.
Oily fish
–
Oily fish have oil in their tissues and in the belly cavity around the gut. Their fillets contain up to 30% oil, although this figure varies both within and between species, examples include small forage fish, such as sardines, herring and anchovies, and other larger pelagic fish, such as salmon, trout, tuna and mackerel. Oily fish can be contrasted with fish, which contain oil only in the liver. Examples of white fish are cod, haddock and flatfish, white fish are usually demersal fish which live on or near the seafloor, whereas oily fish are pelagic, living in the water column away from the bottom. Oily fish meat is a source of vitamins A and D. Among other benefits, studies suggest that the fatty acids in oily fish may help improve inflammatory conditions such as arthritis. A1997 study published in Annals of Neurology followed 5,386 elderly participants in Rotterdam and it found that fish consumption decreased the risk of dementia. However, the 2. 1-year average follow-up was less than the three years dementia commonly affects people prior to diagnosis, thus, the study was unclear as to whether fish consumption protected against dementia, or if dementia prevented the participants from wanting more fish. The conclusion was that people who ate fish at least once a week had a lower risk of being diagnosed with dementia over a seven-year period. This study reinforced the Annals of Neurology findings, because of the longer term, the BMJ study provided stronger evidence of a genuine protective effect. There was a possible confounding factor in that individuals with higher education have both a lower risk of dementia and higher consumption of fish, consuming 200–400 g of oily fish twice per week may also help prevent sudden death due to myocardial infarction by preventing cardiac arrhythmia. In 1994, the UK Committee on Medical Aspects of Food, the United States Environmental Protection Agencys Exposure Reference Dose for MeHg is 0.1 micrograms per kg body weight per day. The corresponding limit of blood mercury is 5.8 micrograms per liter, there is no recommended limit on the consumption of white fish. There are limits, however, for nursing/pregnant women and children under the age of six and this population should completely avoid fish with high risk of mercury contamination and limit consumption of moderate and low-mercury fish to 12 ounces or fewer per week. Albacore tuna should be limited to six ounces or less per week, concerns about contamination, diet or supply have led to investigation of plant sources of omega-3 fatty acids, notably flax, hempseed and perilla oils. The End of the Line, How overfishing is changing the world, ISBN 0-09-189780-7 Achieving optimal essential fatty acid status in vegetarians, current knowledge and practical implications Whats an oily fish. From the UK Foods Standards Agency BUPA article on oily fish George Monbiot on the problems of sourcing omega-3 from fish
Oily fish
–
Large
open-water fish, like this
Atlantic bluefin tuna, are oily fish.
Oily fish
–
Most small
forage fish, like these
schooling anchovies, are also oily fish.
Oily fish
–
Oily fish fillet (
salmon – bottom) contrasted with a
white fish fillet (
halibut – top)
Oily fish
–
Grilled salmon, an oily fish
12.
Engraulis
–
Engraulis is a genus of anchovies. Engraulis albidus Borsa, Collet & J. D. Durand,2004 Engraulis anchoita C. L. Species of Engraulis in FishBase, valid species of the genus Engraulis
Engraulis
13.
European anchovy
–
The European anchovy is a forage fish somewhat related to the herring. Anchovies are placed in the family Engraulidae and it is easily distinguished by its deeply cleft mouth, the angle of the gape being behind the eyes. The pointed snout extends beyond the lower jaw, the fish resembles a sprat in having a forked tail and a single dorsal fin, but the body is round and slender. The maximum length is 21 cm, European anchovies are abundant in the Mediterranean and formerly also the Black and Azov seas. They are regularly caught on the coasts of Bulgaria, Croatia, France, Georgia, Greece, Italy, Albania, Romania, Russia, Spain, Turkey, the range of the species also extends along the Atlantic coast of Europe to the south of Norway. In winter it is common off Devon and Cornwall, but has not hitherto been caught in such numbers as to be of commercial importance, formerly they were caught in large numbers off the coast of the Netherlands in summer when they entered the Wadden Sea and Zuiderzee. After the closing of the Zuiderzee they were found in the Wadden Sea until the 1960s. They were also caught in the estuary of the Scheldt and they were believed to be an isolated population, for none come from the south in summer to occupy the English Channel, though the species does exist off the coast of Portugal. Dutch naturalists on the shores of the Zuiderzee first described their reproduction, spawning takes place in June and July. The eggs are buoyant and transparent like most fish eggs, but are unusual in being sausage-shaped and they resemble sprat and pilchard eggs in having a segmented yolk and no oil globule. Larvæ hatch two or three days after fertilization, and are minute and transparent, in August young specimens, c.38 to 89 mm in length, are found in the Zuiderzee, and these must derive from the previous summers spawning. Eggs have also found in the Bay of Naples, near Marseilles, off the coast of the Netherlands. The occurrence of anchovies in the English Channel has been studied at the Marine Biological Association Laboratory in Plymouth. They were most abundant in 1889 and 1890, in the former year considerable numbers were taken off Dover in drift nets of small mesh used for the capture of sprats. In the following December large numbers were taken together with sprats at Torquay, in November 1890 a thousand of the fish were obtained in two days from the pilchard boats fishing near Plymouth, these were caught near the Eddystone. Its Ancient Greek name was ἀφύη, aphýē, later Latinized into apiuva, modern Greek also uses αντζούγια antsúya, a variant of the Genoese form, for processed – as opposed to the fresh gávros – anchovy products. Black Sea adult anchovies can reach around 12–15 cm, in the summer, hamsi migrates north to warm shallow waters of the Azov Sea to feed and breed, returning to the deep for the winter by migrating through the Strait of Kerch. During migration the fish moves in schools, and are actively hunted by gulls
European anchovy
–
European anchovy
European anchovy
–
Anchovies in
Ghana
European anchovy
–
About
fish
14.
Anatomical terms of location
–
Standard anatomical terms of location deal unambiguously with the anatomy of animals, including humans. All vertebrates have the basic body plan – they are strictly bilaterally symmetrical in early embryonic stages. That is, they have left and right halves if divided down the centre. For these reasons, the directional terms can be considered to be those used in vertebrates. By extension, the terms are used for many other organisms as well. While these terms are standardized within specific fields of biology, there are unavoidable, sometimes dramatic, for example, differences in terminology remain a problem that, to some extent, still separates the terminology of human anatomy from that used in the study of various other zoological categories. The vertebrates and Craniata share a heritage and common structure. To avoid ambiguities this terminology is based on the anatomy of each animal in a standard way, for humans, one type of vertebrate, anatomical terms may differ from other forms of vertebrates. Thus what is on top of a human is the head, whereas the top of a dog may be its back, for example, many species are not even bilaterally symmetrical. In these species, terminology depends on their type of symmetry, all descriptions are with respect to the organism in its standard anatomical position, even when the organism in question has appendages in another position. This helps avoid confusion in terminology when referring to the organism in different postures. In humans, this refers to the body in a position with arms at the side. While the universal vertebrate terminology used in medicine would work in human medicine. Many anatomical terms can be combined, either to indicate a position in two axes simultaneously or to indicate the direction of a movement relative to the body, for example, anterolateral indicates a position that is both anterior and lateral to the body axis. There is no limit to the contexts in which terms may be modified to qualify each other in such combinations. Generally the modifier term is truncated and an o or an i is added in prefixing it to the qualified term, where desirable three or more terms may be agglutinated or concatenated, as in anteriodorsolateral. Such terms sometimes used to be hyphenated, but the tendency is to omit the hyphen. There is however little basis for any rule to interfere with choice of convenience in such usage
Anatomical terms of location
–
Unique anatomical terminology is used to describe humans and other animals. Because of differences in the way humans and other animals are structured, different terms are used depending on the
neuraxis and whether an animal is a
vertebrate and
invertebrate.
Anatomical terms of location
–
A
jellyfish of the
Chrysaora species. Like other animals, its
appendages move, and in this image are not in a standard anatomical position. In anatomical position, the proximodistal axis (labelled) is straight, and the point labelled "distal end" neither to the left or the right of the jellyfishes' main axis.
Anatomical terms of location
–
Anatomical planes in a human
15.
Caudal fin
–
Fins are usually the most distinctive features of a fish. Apart from the tail or caudal fin, fish fins have no connection with the spine and are supported only by muscles. Their principal function is to help the fish swim, Fins located in different places on the fish serve different purposes such as moving forward, turning, keeping an upright position or stopping. Most fish use fins when swimming, flying fish use pectoral fins for gliding, for every type of fin, there are a number of fish species in which this particular fin has been lost during evolution. Bony fishes form a group called Osteichthyes. They have skeletons made of bone, and can be contrasted with cartilaginous fishes which have made of cartilage. Bony fishes are divided into ray-finned and lobe-finned fish, most fish are ray-finned, an extremely diverse and abundant group consisting of over 30,000 species. It is the largest class of vertebrates in existence today, in the distant past, lobe-finned fish were abundant. Nowadays they are extinct, with only eight living species. Bony fish have fin spines and rays called lepidotrichia and they typically have swim bladders, which allows the fish to create a neutral balance between sinking and floating without having to use its fins. However, these are absent in species, and have developed into primitive lungs in the lungfishes. Bony fishes also have an operculum, which helps them breathe without having to use fins to swim, lobe-finned fishes are a class of bony fishes called Sarcopterygii. They have fleshy, lobed, paired fins, which are joined to the body by a single bone, the fins of lobe-finned fish differ from those of all other fish in that each is borne on a fleshy, lobelike, scaly stalk extending from the body. Pectoral and pelvic fins have articulations resembling those of tetrapod limbs and these fins evolved into legs of the first tetrapod land vertebrates, amphibians. They also possess two dorsal fins with separate bases, as opposed to the dorsal fin of ray-finned fish. The coelacanth is another lobe-finned fish which is still extant and it is thought to have evolved into roughly its current form about 408 million years ago, during the early Devonian. Locomotion of the coelacanths is unique to their kind, to move around, coelacanths most commonly take advantage of up or downwellings of the current and drift. They use their fins to stabilize their movement through the water
Caudal fin
–
Pectoral fins
Caudal fin
–
Ray fins on a
teleost fish,
Hector's lanternfish (1) pectoral fins (paired), (2) pelvic fins (paired), (3) dorsal fin, (4) adipose fin, (5) anal fin, (6) caudal (tail) fin
Caudal fin
–
Pelvic fins (Ventral fins)
Caudal fin
–
Dorsal fin of a shark
16.
Snout
–
A snout is the protruding portion of an animals face, consisting of its nose, mouth, and jaw. In many animals the equivalent structure is called a muzzle, rostrum or proboscis, the wet, naked surface around the nostrils of the nose of some animals is known as the rhinarium. The rhinarium is often associated with a sense of olfaction. The snout is considered a point on most animals, because of its structure. Snouts are found on other mammals in a variety of shapes. Some animals, including ursines and great cats, have box-like snouts, while others, pig snouts are flat and cylindrical. The muzzle begins at the stop, just below the eyes, in the domestic dog, most of the upper muzzle contains organs for detecting scents. The loose flaps of skin on the sides of the muzzle that hang to different lengths over the mouth are called flews. It is innervated by one of the pairs of cranial nerves. These nerves start in the brain and emerge through the skull to their target organs, other destinations of these nerves are eyeballs, teeth and tongue. The muzzle shape of a domestic dog ranges in shape depending upon the breed, from long and thin, as in the Rough Collie, to nearly nonexistent because it is so flat
Snout
–
Tapir (Tapirus terrestris) snout showing
flehmen
Snout
–
Snout of a male
elephant seal
Snout
–
Asian
Elephant (Elephas maximus indicus). The extended
proboscis is called the "trunk" and is used for a wide range of purposes, including
feeding, drinking,
exploration, and
social grooming.
Snout
17.
Teeth
–
A tooth is a hard, calcified structure found in the jaws of many vertebrates and used to break down food. Some animals, particularly carnivores, also use teeth for hunting or for defensive purposes, the roots of teeth are covered by gums. Teeth are not made of bone, but rather of tissues of varying density. The cellular tissues that ultimately become teeth originate from the germ layer. The general structure of teeth is similar across the vertebrates, although there is variation in their form. The teeth of mammals have deep roots, and this pattern is found in some fish. In most teleost fish, however, the teeth are attached to the surface of the bone. In cartilaginous fish, such as sharks, the teeth are attached by tough ligaments to the hoops of cartilage that form the jaw, some animals develop only one set of teeth while others develop many sets. Sharks, for example, grow a new set of every two weeks to replace worn teeth. Rodent incisors grow and wear away continually through gnawing, which helps maintain relatively constant length, the industry of the beaver is due in part to this qualification. Many rodents such as voles and guinea pigs, but not mice, Teeth are not always attached to the jaw, as they are in mammals. In many reptiles and fish, teeth are attached to the palate or to the floor of the mouth, some teleosts even have teeth in the pharynx. While not true teeth in the sense, the dermal denticles of sharks are almost identical in structure and are likely to have the same evolutionary origin. Though modern teeth-like structures with dentine and enamel have been found in late conodonts, living amphibians typically have small teeth, or none at all, since they commonly feed only on soft foods. In reptiles, teeth are simple and conical in shape. The pattern of incisors, canines, premolars and molars is found only in mammals, the numbers of these types of teeth vary greatly between species, zoologists use a standardised dental formula to describe the precise pattern in any given group. The genes governing tooth development in mammals are homologous to these involved in the development of fish scales, Teeth are among the most distinctive features of mammal species. Paleontologists use teeth to identify species and determine their relationships
Teeth
–
Section through the ivory tusk of a mammoth
Teeth
–
A
chimpanzee displaying its teeth
Teeth
–
Teeth of
Great White Shark
Teeth
–
The
European medicinal leech has three jaws with numerous sharp teeth which function like little saws for incising a host.
18.
Herring
–
Herring are forage fish, mostly belonging to the family Clupeidae. Herring often move in schools around fishing banks and near the coast. Three species of Clupea are recognised, and provide about 90% of all captured in fisheries. Most abundant of all is the Atlantic herring, providing half of all herring capture. Fishes called herring are found in India, in the Arabian Sea, Indian Ocean. Herring played a role in the history of marine fisheries in Europe. These oily fish also have a history as an important food fish. A number of different species, most belonging to the family Clupeidae, are referred to as herrings. The origins of the herring is somewhat unclear, though it may derive from the Old High German heri meaning a host, multitude. The type genus of the herring family Clupeidae is Clupea, Clupea contains three species, the Atlantic herring found in the north Atlantic, the Pacific herring found in the north Pacific, and the Araucanian herring found off the coast of Chile. Subspecific divisions have been suggested for both the Atlantic and Pacific herrings, but their biological basis remain unclear, in addition, a number of related species, all in the family Clupeidae, are commonly referred to as herrings. The table immediately below includes those members of the Clupeidae family referred to by FishBase as herrings which have been assessed by the International Union for Conservation of Nature. There are also a number of other species called herrings, which may be related to clupeids or just share some characteristics of herrings. Just which of these species are called herrings can vary with locality, some examples, The species of Clupea belong to the larger family Clupeidae, which comprises some 200 species that share similar features. These silvery-coloured fish have a dorsal fin, which is soft. They have no lateral line and have a lower jaw. At least one stock of Atlantic herring spawns in every month of the year, each spawns at a different time and place. Greenland populations spawn in 0–5 metres of water while North Sea herrings spawn at up to 200 metres in autumn
Herring
–
The
Atlantic herring, Clupea harengus
Herring
–
Global commercial capture of herrings in million tonnes reported by the
FAO 1950–2010
Herring
Herring
–
Clupea pallasii, the Pacific herring
19.
Silverside (fish)
–
The Atheriniformes, also known as the silversides, are an order of ray-finned fishes that includes the Old World silversides and several less-familiar families, including the unusual Phallostethidae. The order includes at least 354 species and they are found worldwide in tropical and temperate marine and freshwater environments. Atheriniformes are generally elongated and silvery in colour, although exceptions do exist. They are typically fish, with the largest being the jacksmelt, with a head-body length of 44 cm. Members of the order usually have two fins, the first with flexible spines, and an anal fin with one spine at the front. The lateral line is weak or absent. They scatter their eggs widely, with most species attaching them to aquatic plants, classification of the atheriniformes is uncertain, with the best evidence for monophyly in the larval characteristics mentioned below. Their closest relatives are thought to be the Cyprinodontiformes, following Nelson, the family Melanotaeniidae includes the subfamilies Bedotiinae, Melanotaeniinae, Pseudomugilinae, and Telmatherininae, to demonstrate their monophyly. However, in a 2004 study, a different classification scheme classifies the families Bedotiidae, Melanotaeniidae, thus, the number of families in Atheriniformes varies from author to author. A compendium of fossil marine animal genera, archived from the original on 2011-07-23
Silverside (fish)
–
Silversides
20.
Plankton
–
Plankton are the diverse collection of organisms that live in the water column of large bodies of water and are unable to swim against a current. They provide a source of food to many large aquatic organisms, such as fish. These organisms include bacteria, archaea, algae, protozoa and drifting or floating animals that inhabit, for example, essentially, plankton are defined by their ecological niche rather than any phylogenetic or taxonomic classification. Though many planktonic species are microscopic in size, plankton includes organisms covering a range of sizes. The name plankton is derived from the Greek adjective πλαγκτός, meaning errant and it was coined by Victor Hensen. Plankton typically flow with ocean currents, while some forms are capable of independent movement and can swim hundreds of meters vertically in a single day, their horizontal position is primarily determined by the surrounding currents. This is in contrast to nekton organisms that can swim against the ambient flow, within the plankton, holoplankton spend their entire life cycle as plankton. By contrast, meroplankton are only planktic for part of their lives, examples of meroplankton include the larvae of sea urchins, starfish, crustaceans, marine worms, and most fish. Plankton abundance and distribution are strongly dependent on such as ambient nutrient concentrations, the physical state of the water column. The study of plankton is termed planktology and an individual is referred to as a plankter. The adjective planktonic is widely used in both the scientific and popular literature, and is an accepted term. However, from the standpoint of prescriptive grammar the less commonly used planktic is more strictly the correct adjective, when deriving English words from their Greek or Latin roots the gender specific ending is normally dropped, using only the root of the word in the derivation. Among the more important groups are the diatoms, cyanobacteria, dinoflagellates and coccolithophores, zooplankton, small protozoans or metazoans that feed on other plankton and telonemia. Some of the eggs and larvae of larger animals, such as fish, crustaceans, bacterioplankton, bacteria and archaea, which play an important role in remineralising organic material down the water column. Mycoplankton, fungi and fungus-like organisms, which also are significant in nutrient cycling and this scheme divides the plankton community into broad producer, consumer and recycler groups. However, determining the level of some plankton is not straightforward. For example, although most dinoflagellates are either photosynthetic producers or heterotrophic consumers, Plankton are also often described in terms of size. Usually the following divisions are used, However, some of terms may be used with very different boundaries
Plankton
–
Photomontage of planktonic organisms
Plankton
–
Some marine
diatoms —a key
phytoplankton group
Plankton
–
An
amphipod (Hyperia macrocephala)
Plankton
–
Macroplankton: a
Janthina janthina snail (with bubble float) cast up onto a beach in
Maui
21.
Fry (biology)
–
Juvenile fish go through various stages between birth and adulthood. They start as eggs which hatch into larvae, the larvae are not able to feed themselves, and carry a yolk-sac which provides their nutrition. Before the yolk-sac completely disappears, the fish must become capable of feeding themselves. When they have developed to the point where they are capable of feeding themselves, when, in addition, they have developed scales and working fins, the transition to a juvenile fish is complete and it is called a fingerling. Fingerlings are typically about the size of fingers, the juvenile stage lasts until the fish is fully grown, sexually mature and interacting with other adult fish. Ichthyoplankton are the eggs and larvae of fish and they are usually found in the sunlit zone of the water column, less than 200 metres deep, sometimes called the epipelagic or photic zone. Ichthyoplankton are planktonic, meaning they cannot swim effectively under their own power, Fish eggs cannot swim at all, and are unambiguously planktonic. Early stage larvae swim poorly, but later stage larvae swim better, Fish larvae are part of the zooplankton that eat smaller plankton, while fish eggs carry their own food supply. Both eggs and larvae are eaten by larger animals. According to Kendall et al.1984 there are three main stages of fish, Egg stage, Spawning to hatching. This stage is used instead of using a stage because there are aspects, such as those to do with the egg envelope. Larval stage, From hatching till all fin rays are present, a key event is when the notochord associated with the tail fin on the ventral side of the spinal cord develops and becomes flexible. A transitional stage, the larval stage, lasts from hatching to the absorption of the yolk-sac. Juvenile stage, Starts when the transformation or metamorphosis from larva to juvenile is complete, that is and these features are that all the fin rays are present and that scale growth is under way. The stage completes when the juvenile becomes adult, that is and this article is about the juvenile stage. Fingerling – refers to a fish that has reached the stage where the fins can be extended, in this stage, the fish is typically about the size of a finger. Fry and fingerling are terms that can be applied to fish of most species. But some groups of fishes have juvenile development stages particular to the group and this section details the stages and the particular names used for juvenile salmon
Fry (biology)
–
This young
Chinook salmon, with
scales and working
fins, is a fingerling
Fry (biology)
–
Juvenile fish bypass for a hydroelectric dam
Fry (biology)
–
Salmon eggs. The growing larvae can be seen through the transparent egg envelope. The black spots are the eyes.
Fry (biology)
–
Salmon egg hatching into a sac fry. In a few days, the sac fry will absorb the yolk sac and become a salmon fry
22.
Salinity
–
Salinity is the saltiness or amount of salt dissolved in a body of water. This is usually measured in g salt k g sea water, a contour line of constant salinity is called an isohaline – or sometimes isohale. Salinity in rivers, lakes, and the ocean is conceptually simple, conceptually the salinity is the quantity of dissolved salt content of the water. Salts are compounds like sodium chloride, magnesium sulfate, potassium nitrate, the concentration of dissolved chloride ions is sometimes referred to as chlorinity. Operationally, dissolved matter is defined as that which can pass through a fine filter. Salinity can be expressed in the form of a mass fraction, Seawater typically has a mass salinity of around 35 g/kg, although lower values are typical near coasts where rivers enter the ocean. Rivers and lakes can have a range of salinities, from less than 0.01 g/kg to a few g/kg. The Dead Sea has a salinity of more than 200 g/kg, whatever pore size is used in the definition, the resulting salinity value of a given sample of natural water will not vary by more than a few percent. A bottled seawater product known as IAPSO Standard Seawater is used by oceanographers to standardize their measurements with enough precision to meet this requirement, measurement and definition difficulties arise because natural waters contain a complex mixture of many different elements from different sources in different molecular forms. The chemical properties of some of these depend on temperature and pressure. Many of these forms are difficult to measure with high accuracy, different practical definitions of salinity result from different attempts to account for these problems, to different levels of precision, while still remaining reasonably easy to use. For many purposes this sum can be limited to a set of eight major ions in natural waters, the major ions dominate the inorganic composition of most natural waters. Exceptions include some pit lakes and waters from some hydrothermal springs, the concentrations of dissolved gases like oxygen and nitrogen are not usually included in descriptions of salinity. However, carbon dioxide gas, which when dissolved is partially converted into carbonates and bicarbonates, is often included. Silicon in the form of acid, which usually appears as a neutral molecule in the pH range of most natural waters. The term salinity is, for oceanographers, usually associated with one of a set of measurement techniques. As the dominant techniques evolve, so do different descriptions of salinity, the distinctions between these different descriptions are important to physical oceanographers but are obscure and confusing to nonspecialists. Salinities were largely measured using titration-based techniques before the 1980s, titration with silver nitrate could be used to determine the concentration of halide ions to give a chlorinity
Salinity
–
Global map of average sea surface salinity (SSS)
Salinity
–
Annual mean sea surface salinity for the
World Ocean. Data from the
World Ocean Atlas 2009.
Salinity
–
International Association for the Physical Sciences of the Oceans (IAPSO) standard seawater.
Salinity
–
Global map of average sea surface density
23.
Brackish
–
Brackish water or briny water is water that has more salinity than fresh water, but not as much as seawater. It may result from mixing of seawater with fresh water, as in estuaries, the word comes from the Middle Dutch root brak. Brackish water is also the primary product of the salinity gradient power process. Because brackish water is hostile to the growth of most terrestrial plant species, without appropriate management it is damaging to the environment. Technically, brackish water contains between 0.5 and 30 grams of salt per litre—more often expressed as 0.5 to 30 parts per thousand, thus, brackish covers a range of salinity regimes and is not considered a precisely defined condition. It is characteristic of many brackish surface waters that their salinity can vary considerably over space and/or time, brackish water condition commonly occurs when fresh water meets seawater. In fact, the most extensive brackish water habitats worldwide are estuaries, the River Thames flowing through London is a classic river estuary. A similar pattern of replacement can be observed with the aquatic plants and this type of ecological succession from a freshwater to marine ecosystem is typical of river estuaries. Salmon are anadromous, meaning live in the sea but ascend rivers to spawn, eels are catadromous, living in rivers and streams. Besides the species migrate through estuaries, there are many other fish that use them as nursery grounds for spawning or as places young fish can feed. Herring and plaice are two commercially important species that use the Thames Estuary for this purpose, estuaries are also commonly used as fishing grounds, and as places for fish farming or ranching. Another important brackish water habitat is the swamp or mangal. Many, though not all, mangrove swamps fringe estuaries and lagoons where the salinity changes with each tide, like estuaries, mangrove swamps are extremely important breeding grounds for many fish, with species such as snappers, halfbeaks, and tarpon spawning or maturing among them. Mangroves represent important nesting site for numerous birds groups such as herons, storks, spoonbills, ibises, kingfishers, the Sundarbans and Bhitarkanika Mangroves are two of the large mangrove forests in the world, both on the coast of the Bay of Bengal. Some seas and lakes are brackish, the Baltic Sea is a brackish sea adjoining the North Sea. Because the salt water coming in from the sea is denser than freshwater, limited mixing occurs because of the lack of tides and storms, with the result that the fish fauna at the surface is freshwater in composition while that lower down is more marine. Cod are an example of a species found in deep water in the Baltic. The Caspian Sea is the worlds largest lake and contains brackish water with a salinity about one-third that of normal seawater, the Caspian is famous for its peculiar animal fauna, including one of the few non-marine seals and the great sturgeons, a major source of caviar
Brackish
–
A brackish water fish:
Monodactylus argenteus
24.
Alboran Sea
–
The Alboran Sea is the westernmost portion of the Mediterranean Sea, lying between the Iberian Peninsula and the north of Africa. The Strait of Gibraltar, which lies at the west end of the Alboran Sea and its average depth is 1,461 feet and maximum depth is 4,920 feet. The International Hydrographic Organization defines the limits of the Alboran Sea as follows, the Eastern limit of the Strait of Gibraltar, A line joining from tip of Cap Gibraltar in Europe to the tip of the Península de Almina of Ceuta in Africa. A line joining from Cabo de Gata in Andalusia in Europe to Cap Fegalo in Algeria in Africa, several small islands dot the sea, including the eponymous Isla de Alborán. Most, even including those close to the Moroccan shore are controlled by Spain, reoccurring earthquakes at a depth of about 600 km indicates that this subduction is ongoing and that complex interactions between the lithosphere and mantle are forming the region. The internal zones are made of Late Paleozoic to Triassic rocks that were piled up during the Tertiary and has extended since the Early Miocene. The seafloor is morphologically complex with several sub-basins, including three main sub-basins named West, East, and South Alboran Basins, ridges, and seamounts, the most prominent structure in the Alboran Sea is the 180 km -long Alboran Ridge which stretches southwest from the volcanic Alborán Island. Thus there is typically a vertical rotary circulation, also known as a gyre, the Alboran Sea is a transition zone between ocean and sea, containing a mix of Mediterranean and Atlantic species. The Alboran sea also hosts important commercial fisheries, including sardines, in 2003, the World Wildlife Fund raised concerns about the widespread drift net fishing endangering populations of dolphins, turtles, and other marine animals. An arc of mountains, known as the Gibraltar Arc, wraps around the northern, western, the Gibraltar Arc is made up of the Baetic Cordillera of southern Spain and the Rif Mountains of Morocco
Alboran Sea
–
A satellite image centred on the Alboran Sea. To the left, the Iberian Peninsula, and to the right, the north of Africa.
25.
Aegean Sea
–
The Aegean Sea is an elongated embayment of the Mediterranean Sea located between the Greek and Anatolian peninsulas, i. e. between the mainlands of Greece and Turkey. In the north, it is connected to the Marmara Sea and Black Sea by the Dardanelles, the Aegean Islands are within the sea and some bound it on its southern periphery, including Crete and Rhodes. The sea was known as Archipelago, but in English this words meaning has changed to refer to the Aegean Islands and, generally. In ancient times, there were various explanations for the name Aegean, a possible etymology is a derivation from the Greek word αἶγες – aiges = waves, hence wavy sea, cf. also αἰγιαλός, hence meaning sea-shore. The Venetians, who ruled many Greek islands in the High and Late Middle Ages, popularized the name Archipelago, in some South Slavic languages the Aegean is often called White Sea. The Aegean Sea covers about 214,000 square kilometres in area, the seas maximum depth is 3,543 metres, east of Crete. The Aegean Islands are found within its waters, with the following islands delimiting the sea on the south, Kythera, Antikythera, Crete, Kasos, Karpathos, many of the Aegean Islands, or chains of islands, are actually extensions of the mountains on the mainland. One chain extends across the sea to Chios, another extends across Euboea to Samos, the International Hydrographic Organization defines the limits of the Aegean Sea as follows, On the South. In the Dardanelles. A line joining Kum Kale and Cape Helles, the dense Mediterranean water sinks below the Black Sea inflow to a depth of 23–30 metres, then flows through the Dardanelles Strait and into the Sea of Marmara at velocities of 5–15 cm/s. The Black Sea outflow moves westward along the northern Aegean Sea, Aegean Sea Intermediate Water – Aegean Sea Intermediate Water extends from 40–50 m to 200–300 metres with temperatures ranging from 11–18 °C. Aegean Sea Bottom Water – occurring at depths below 500–1000 m with a uniform temperature. The current coastline dates back to about 4000 BC, before that time, at the peak of the last ice age sea levels everywhere were 130 metres lower, and there were large well-watered coastal plains instead of much of the northern Aegean. When they were first occupied, the islands including Milos with its important obsidian production were probably still connected to the mainland. The present coastal arrangement appeared c.7000 BC, with post-ice age sea levels continuing to rise for another 3,000 years after that, the subsequent Bronze Age civilizations of Greece and the Aegean Sea have given rise to the general term Aegean civilization. In ancient times, the sea was the birthplace of two ancient civilizations – the Minoans of Crete and the Mycenean Civilization of the Peloponnese, later arose the city-states of Athens and Sparta among many others that constituted the Athenian Empire and Hellenic Civilization. Plato described the Greeks living round the Aegean like frogs around a pond, the Aegean Sea was later invaded by the Persians and the Romans, and inhabited by the Byzantine Empire, the Bulgarians, the Venetians, the Genoese, the Seljuq Turks, and the Ottoman Empire. The Aegean was the site of the democracies, and its seaways were the means of contact among several diverse civilizations of the Eastern Mediterranean. Many of the islands in the Aegean have safe harbours and bays, in ancient times, navigation through the sea was easier than travelling across the rough terrain of the Greek mainland
Aegean Sea
–
Map of the Aegean Sea
Aegean Sea
–
Topographical and
bathymetric map
Aegean Sea
–
Panoramic view of the
Santorini caldera, taken from Oia.
26.
Crete
–
Crete is the largest and most populous of the Greek islands, 88th-largest island in the world and the fifth-largest island in the Mediterranean Sea, after Sicily, Sardinia, Cyprus, and Corsica. Crete and a number of surrounding islands and islets constitute the region of Crete, the capital and the largest city is Heraklion. As of 2011, the region had a population of 623,065, Crete forms a significant part of the economy and cultural heritage of Greece, while retaining its own local cultural traits. It was once the centre of the Minoan civilization, which is regarded as the earliest recorded civilization in Europe. The island is first referred to as Kaptara in texts from the Syrian city of Mari dating from the 18th century BC, repeated later in Neo-Assyrian records and it was also known in ancient Egyptian as Keftiu, strongly suggesting a similar Minoan name for the island. The current name of Crete is thought to be first attested in Mycenaean Greek texts written in Linear B, through the words
Crete
–
NASA photograph of Crete
Crete
–
Lefka Ori
Crete
–
Port of Heraklion
Crete
–
Lefka Ori (White mountains).
27.
Greece
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Greece, officially the Hellenic Republic, historically also known as Hellas, is a country in southeastern Europe, with a population of approximately 11 million as of 2015. Athens is the capital and largest city, followed by Thessaloniki. Greece is strategically located at the crossroads of Europe, Asia, situated on the southern tip of the Balkan peninsula, it shares land borders with Albania to the northwest, the Republic of Macedonia and Bulgaria to the north, and Turkey to the northeast. Greece consists of nine regions, Macedonia, Central Greece, the Peloponnese, Thessaly, Epirus, the Aegean Islands, Thrace, Crete. The Aegean Sea lies to the east of the mainland, the Ionian Sea to the west, the Cretan Sea and the Mediterranean Sea to the south. Greece has the longest coastline on the Mediterranean Basin and the 11th longest coastline in the world at 13,676 km in length, featuring a vast number of islands, eighty percent of Greece is mountainous, with Mount Olympus being the highest peak at 2,918 metres. From the eighth century BC, the Greeks were organised into various independent city-states, known as polis, which spanned the entire Mediterranean region and the Black Sea. Greece was annexed by Rome in the second century BC, becoming a part of the Roman Empire and its successor. The Greek Orthodox Church also shaped modern Greek identity and transmitted Greek traditions to the wider Orthodox World, falling under Ottoman dominion in the mid-15th century, the modern nation state of Greece emerged in 1830 following a war of independence. Greeces rich historical legacy is reflected by its 18 UNESCO World Heritage Sites, among the most in Europe, Greece is a democratic and developed country with an advanced high-income economy, a high quality of life, and a very high standard of living. A founding member of the United Nations, Greece was the member to join the European Communities and has been part of the Eurozone since 2001. Greeces unique cultural heritage, large industry, prominent shipping sector. It is the largest economy in the Balkans, where it is an important regional investor, the names for the nation of Greece and the Greek people differ from the names used in other languages, locations and cultures. The earliest evidence of the presence of human ancestors in the southern Balkans, dated to 270,000 BC, is to be found in the Petralona cave, all three stages of the stone age are represented in Greece, for example in the Franchthi Cave. Neolithic settlements in Greece, dating from the 7th millennium BC, are the oldest in Europe by several centuries and these civilizations possessed writing, the Minoans writing in an undeciphered script known as Linear A, and the Mycenaeans in Linear B, an early form of Greek. The Mycenaeans gradually absorbed the Minoans, but collapsed violently around 1200 BC and this ushered in a period known as the Greek Dark Ages, from which written records are absent. The end of the Dark Ages is traditionally dated to 776 BC, the Iliad and the Odyssey, the foundational texts of Western literature, are believed to have been composed by Homer in the 7th or 8th centuries BC. With the end of the Dark Ages, there emerged various kingdoms and city-states across the Greek peninsula, in 508 BC, Cleisthenes instituted the worlds first democratic system of government in Athens
Greece
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Fresco displaying the Minoan ritual of "bull leaping", found in
Knossos,
Crete.
Greece
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Flag
Greece
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The
Lion Gate,
Mycenae
Greece
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The
Parthenon on the
Acropolis of Athens is one of the best known symbols of
classical Greece.
Least concern[17]
Media related to Anchovy dishes at Wikimedia Commons
Chisholm, Hugh, ed. (1911). "Anchovy". Encyclopædia Britannica (11th ed.). Cambridge University Press.
Chisholm, Hugh, ed. (1911). "
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