1.
Fishing
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Fishing is the activity of trying to catch fish. Fish are normally caught in the wild, techniques for catching fish include hand gathering, spearing, netting, angling and trapping. Fishing may include catching aquatic animals other than fish, such as molluscs, cephalopods, crustaceans, the term is not normally applied to catching farmed fish, or to aquatic mammals, such as whales where the term whaling is more appropriate. According to United Nations FAO statistics, the number of commercial fishermen. Fisheries and aquaculture provide direct and indirect employment to over 500 million people in developing countries, in 2005, the worldwide per capita consumption of fish captured from wild fisheries was 14.4 kilograms, with an additional 7.4 kilograms harvested from fish farms. In addition to providing food, modern fishing is also a recreational pastime, Fishing is an ancient practice that dates back to at least the beginning of the Upper Paleolithic period about 40,000 years ago. Isotopic analysis of the remains of Tianyuan man, a 40. Archaeology features such as middens, discarded fish bones, and cave paintings show that sea foods were important for survival. During this period, most people lived a lifestyle and were, of necessity. However, where there are examples of permanent settlements such as those at Lepenski Vir. The British dogger was a type of sailing trawler from the 17th century. The Brixham trawler that evolved there was of a build and had a tall gaff rig. They were also sufficiently robust to be able to tow large trawls in deep water, the great trawling fleet that built up at Brixham, earned the village the title of Mother of Deep-Sea Fisheries. The small village of Grimsby grew to become the largest fishing port in the world by the mid 19th century, an Act of Parliament was first obtained in 1796, which authorised the construction of new quays and dredging of the Haven to make it deeper. It was only in the 1846, with the expansion in the fishing industry. The foundation stone for the Royal Dock was laid by Albert the Prince consort in 1849, the dock covered 25 acres and was formally opened by Queen Victoria in 1854 as the first modern fishing port. The elegant Brixham trawler spread across the world, influencing fishing fleets everywhere, by the end of the 19th century, there were over 3,000 fishing trawlers in commission in Britain, with almost 1,000 at Grimsby. These trawlers were sold to fishermen around Europe, including from the Netherlands, twelve trawlers went on to form the nucleus of the German fishing fleet
2.
Fishing industry
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The fishing industry includes any industry or activity concerned with taking, culturing, processing, preserving, storing, transporting, marketing or selling fish or fish products. It is defined by the Food and Agriculture Organization as including recreational, subsistence and commercial fishing, and the harvesting, processing, the commercial activity is aimed at the delivery of fish and other seafood products for human consumption or as input factors in other industrial processes. Directly or indirectly, the livelihood of over 500 million people in developing countries depends on fisheries and it is also referred to as the seafood industry, although non-food items such as pearls are included among its products. The traditional sector, comprises enterprises and individuals associated with fisheries resources from which aboriginal people derive products in accordance with their traditions, in addition,1.3 million tons of aquatic plants were captured in wild fisheries and 14.8 million tons were produced by aquaculture. The number of fish caught in the wild has been estimated at 0. 97-2.7 trillion per year. Following is a table of the 2011 world fishing industry harvest in tonnes by capture and by aquaculture. The top producing countries were, in order, the Peoples Republic of China, Peru, Japan and those countries accounted for more than half of the worlds production, China alone accounted for a third of the worlds production. Aquaculture is the cultivation of aquatic organisms, unlike fishing, aquaculture, also known as aquafarming, is the cultivation of aquatic populations under controlled conditions. Mariculture refers to aquaculture practiced in marine environments, particular kinds of aquaculture include algaculture, fish farming, shrimp farming, shellfish farming, and the growing of cultured pearls. Fish farming involves raising fish commercially in tanks or enclosed pools, fish species raised by fish farms include carp, salmon, tilapia, catfish and cod. Increasing demands on wild fisheries by commercial fishing operations have caused widespread overfishing, fish farming offers an alternative solution to the increasing market demand for fish and fish protein. Fish processing is the processing of fish delivered by commercial fisheries, the larger fish processing companies have their own fishing fleets and independent fisheries. The products of the industry are usually sold wholesale to grocery chains or to intermediaries, fish processing can be subdivided into two categories, fish handling and fish products manufacturing. Aspects of fish processing occur on fishing vessels, fish processing vessels, fisheries are estimated to currently provide 16% of the world populations protein. The flesh of fish are primarily valued as a source of food. Other marine life taken as food includes shellfish, crustaceans, sea cucumber, jellyfish, fish and other marine life can also be used for many other uses, pearls and mother-of-pearl, sharkskin and rayskin. Sea horses, star fish, sea urchins and sea cucumber are used in traditional Chinese medicine, tyrian purple is a pigment made from marine snails, sepia is a pigment made from the inky secretions of cuttlefish. Fish glue has long valued for its use in all manner of products
3.
Fish
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A fish is any member of a group of animals that consist of all gill-bearing aquatic craniate animals that lack limbs with digits. They form a group to the tunicates, together forming the olfactores. Included in this definition are the living hagfish, lampreys, and cartilaginous, tetrapods emerged within lobe-finned fishes, so cladistically they are fish as well. However, traditionally fish are rendered obsolete or paraphyletic by excluding the tetrapods, because in this manner the term fish is defined negatively as a paraphyletic group, it is not considered a formal taxonomic grouping in systematic biology. The traditional term pisces is considered a typological, but not a phylogenetic classification, the earliest organisms that can be classified as fish were soft-bodied chordates that first appeared during the Cambrian period. Although they lacked a true spine, they possessed notochords which allowed them to be more agile than their invertebrate counterparts, fish would continue to evolve through the Paleozoic era, diversifying into a wide variety of forms. Many fish of the Paleozoic developed external armor that protected them from predators, the first fish with jaws appeared in the Silurian period, after which many became formidable marine predators rather than just the prey of arthropods. Fish are abundant in most bodies of water and they can be found in nearly all aquatic environments, from high mountain streams to the abyssal and even hadal depths of the deepest oceans. With 33,100 described species, fish exhibit greater species diversity than any group of vertebrates. Fish are an important resource for humans worldwide, especially as food, commercial and subsistence fishers hunt fish in wild fisheries or farm them in ponds or in cages in the ocean. They are also caught by fishers, kept as pets, raised by fishkeepers. Fish have had a role in culture through the ages, serving as deities, religious symbols, fish do not represent a monophyletic group, and therefore the evolution of fish is not studied as a single event. Early fish from the record are represented by a group of small, jawless. Jawless fish lineages are mostly extinct, an extant clade, the lampreys may approximate ancient pre-jawed fish. The first jaws are found in Placodermi fossils, the diversity of jawed vertebrates may indicate the evolutionary advantage of a jawed mouth. It is unclear if the advantage of a hinged jaw is greater biting force, improved respiration, fish may have evolved from a creature similar to a coral-like sea squirt, whose larvae resemble primitive fish in important ways. The first ancestors of fish may have kept the form into adulthood. Fish are a group, that is, any clade containing all fish also contains the tetrapods
4.
Fisherman
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A fisherman or fisher is someone who captures fish and other animals from a body of water, or gathers shellfish. Worldwide, there are about 38 million commercial and subsistence fishermen, the term can also be applied to recreational fishermen and may be used to describe both men and women. Fishing has existed as a means of obtaining food since the Mesolithic period, fishing has existed as a means of obtaining food since the Mesolithic period. During the time of the Ancient Egyptians, fishermen provided the majority of food for Egyptians, fishing had become a major means of survival as well as a business venture. Fishing and the fisherman have also influenced Ancient Egyptian religion, mullets were worshiped as a sign of the flood season. Bastet was often manifested in the form of a catfish, in ancient Egyptian literature, the method that Amun used to create the world is associated with the tilapias method of mouth-brooding. According to the FAO, there were about 39 million fishers in countries producing more than 200,000 tonnes in 2012, the total fishery production of 66 million tonnes equated to an average productivity of 3.5 tonnes per person. Most of this took place in Asian countries, where four-fifths of world fishers. Most fishermen are men involved in offshore and deep-sea fisheries, women fish in some regions inshore from small boats or collect shellfish and seaweed. In many artisanal fishing communities, women are responsible for making and repairing nets, recreational fishing is fishing for pleasure or competition. It can be contrasted with fishing, which is fishing for economic profit, or subsistence fishing. The most common form of fishing is done with a rod, reel, line, hooks. Lures are frequently used in place of bait, some people make handmade lures, including plastic lures and artificial flies. The practice of catching or attempting to catch fish with a hook is called angling, when angling, it is sometimes expected or required that the fish be caught and released. Big-game fishing is fishing from boats to catch large species such as tuna, sharks. Noodling and trout tickling are also recreational activities, for some communities, fishing provides not only a source of food and work but also community and cultural identity. The fishing industry is hazardous for fishermen, between 1992 and 1999, US commercial fishing vessels averaged 78 deaths per year. The main contributors to fatalities are, inadequate preparation for emergencies poor vessel maintenance, many fishermen, while accepting that fishing is dangerous, staunchly defend their independence
5.
Wild fisheries
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A fishery is an area with an associated fish or aquatic population which is harvested for its commercial value. Fisheries can be marine or freshwater and they can also be wild or farmed. Wild fisheries are sometimes called capture fisheries, the aquatic life they support is not controlled in any meaningful way and needs to be captured or fished. Wild fisheries exist primarily in the oceans, and particularly around coasts and they also exist in lakes and rivers. Issues with wild fisheries are overfishing and pollution, significant wild fisheries have collapsed or are in danger of collapsing, due to overfishing and pollution. Overall, production from the wild fisheries has levelled out. As a contrast to wild fisheries, farmed fisheries can operate in sheltered waters, in rivers, lakes and ponds. Farmed fisheries are technological in nature, and revolve around developments in aquaculture, farmed fisheries are expanding, and Chinese aquaculture in particular is making many advances. Nevertheless, the majority of fish consumed by humans continues to be sourced from wild fisheries, as of the early 21st century, fish is humanitys only significant wild food source. This can be contrasted with 59.9 million tonnes produced in fish farms, worldwide, freshwater lakes have an area of 1.5 million square kilometres. Saline inland seas add another 1.0 million square kilometres, there are 28 freshwater lakes with an area greater than 5,000 square kilometres, totalling 1.18 million square kilometres or 79 percent of the total. Pollution is the introduction of contaminants into an environment, land run-off and industrial, agricultural, and domestic waste enter rivers and are discharged into the sea. Pollution from ships is also a problem, Marine debris is human-created waste that ends up floating in the sea. Oceanic debris tends to accumulate at the centre of gyres and coastlines, eighty percent of all known marine debris is plastic - a component that has been rapidly accumulating since the end of World War II. Discarded plastic bags, six rings and other forms of plastic waste which finish up in the ocean present dangers to wildlife. Aquatic life can be threatened through entanglement, suffocation, and ingestion, nurdles, also known as mermaids tears, are plastic pellets typically under five millimetres in diameter, and are a major contributor to marine debris. They are used as a raw material in manufacturing, and are thought to enter the natural environment after accidental spillages. Nurdles are also created through the weathering of larger plastic debris
6.
Aquaculture
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Aquaculture, also known as aquafarming, is the farming of fish, crustaceans, molluscs, aquatic plants, algae, and other aquatic organisms. Aquaculture involves cultivating freshwater and saltwater populations under controlled conditions, and can be contrasted with commercial fishing, mariculture refers to aquaculture practiced in marine environments and in underwater habitats. According to the FAO, aquaculture Farming implies some form of intervention in the process to enhance production, such as regular stocking, feeding, protection from predators. Farming also implies individual or corporate ownership of the stock being cultivated, further, in current aquaculture practice, products from several pounds of wild fish are used to produce one pound of a piscivorous fish like salmon. Particular kinds of aquaculture include fish farming, shrimp farming, oyster farming, mariculture, algaculture, particular methods include aquaponics and integrated multi-trophic aquaculture, both of which integrate fish farming and plant farming. The indigenous Gunditjmara people in Victoria, Australia, may have raised eels as early as 6000 BC, Aquaculture was operating in China circa 2500 BC. When the waters subsided after river floods, some fish, mainly carp, were trapped in lakes, early aquaculturists fed their brood using nymphs and silkworm feces, and ate them. A fortunate genetic mutation of carp led to the emergence of goldfish during the Tang dynasty, japanese cultivated seaweed by providing bamboo poles and, later, nets and oyster shells to serve as anchoring surfaces for spores. Romans bred fish in ponds and farmed oysters in coastal lagoons before 100 CE, in central Europe, early Christian monasteries adopted Roman aquacultural practices. Aquaculture spread in Europe during the Middle Ages since away from the seacoasts, improvements in transportation during the 19th century made fresh fish easily available and inexpensive, even in inland areas, making aquaculture less popular. The 15th-century fishponds of the Trebon Basin in the Czech Republic are maintained as a UNESCO World Heritage Site, a remarkable example is a fish pond dating from at least 1,000 years ago, at Alekoko. Legend says that it was constructed by the mythical Menehune dwarf people, in first half of 18th century, German Stephan Ludwig Jacobi experimented with external fertilization of brown trouts and salmon. He wrote an article Von der künstlichen Erzeugung der Forellen und Lachse, by the latter decades of the 18th century, oyster farming had begun in estuaries along the Atlantic Coast of North America. The word aquaculture appeared in an 1855 newspaper article in reference to the harvesting of ice, in 1859, Stephen Ainsworth of West Bloomfield, New York, began experiments with brook trout. By 1864, Seth Green had established a commercial fish-hatching operation at Caledonia Springs, near Rochester, by 1866, with the involvement of Dr. W. W. Fletcher of Concord, Massachusetts, artificial fish hatcheries were under way in both Canada and the United States. When the Dildo Island fish hatchery opened in Newfoundland in 1889, the word aquaculture was used in descriptions of the hatcheries experiments with cod and lobster in 1890. By the 1920s, the American Fish Culture Company of Carolina, Rhode Island, during the 1940s, they had perfected the method of manipulating the day and night cycle of fish so that they could be artificially spawned year around. Californians harvested wild kelp and attempted to supply around 1900
7.
Charles, Prince of Wales
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Charles, Prince of Wales is the eldest child and heir apparent of Queen Elizabeth II. Known alternatively in South West England as Duke of Cornwall and in Scotland as Duke of Rothesay, he is the heir apparent in British history. He is also the oldest person to be next in line to the throne since Sophia of Hanover, Charles was born at Buckingham Palace as the first grandchild of King George VI and Queen Elizabeth. After earning a bachelor of degree from Trinity College, Cambridge. In 1981, he married Lady Diana Spencer and they had two sons, Prince William later to become Duke of Cambridge, and Prince Harry, in 1996, the couple divorced, following well-publicised extramarital affairs. Diana died in a car crash in Paris the following year, in 2005, Charles married Camilla Parker Bowles. Charles has sought to raise awareness of the dangers facing the natural environment. As an environmentalist, he has received awards and recognition from environmental groups around the world. His support for alternative medicine, including homeopathy, has been criticised by some in the medical community and he has been outspoken on the role of architecture in society and the conservation of historic buildings. Subsequently, Charles created Poundbury, a new town based on his theories. He has authored a number of books, including A Vision of Britain, A Personal View of Architecture in 1989 and he was baptised in the palaces Music Room by the Archbishop of Canterbury, Geoffrey Fisher, on 15 December 1948. When Prince Charles was aged three his mothers accession as Queen Elizabeth II made him her heir apparent. As the monarchs eldest son, he took the titles Duke of Cornwall, Duke of Rothesay, Earl of Carrick, Baron of Renfrew, Lord of the Isles and Prince. Charles attended his mothers coronation at Westminster Abbey on 2 June 1953, seated alongside his grandmother, as was customary for upper-class children at the time, a governess, Catherine Peebles, was appointed and undertook his education between the ages of five and eight. Buckingham Palace announced in 1955 that Charles would attend school rather than have a private tutor, Charles then attended two of his fathers former schools, Cheam Preparatory School in Berkshire, England, followed by Gordonstoun in the north-east of Scotland. He reportedly despised the school, which he described as Colditz in kilts. Upon his return to Gordonstoun, Charles emulated his father in becoming Head Boy and he left in 1967, with six GCE O-levels and two A-levels in history and French, at grades B and C, respectively. Tradition was broken again when Charles proceeded straight from school into university
8.
Biology
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Biology is a natural science concerned with the study of life and living organisms, including their structure, function, growth, evolution, distribution, identification and taxonomy. Modern biology is a vast and eclectic field, composed of branches and subdisciplines. However, despite the broad scope of biology, there are certain unifying concepts within it that consolidate it into single, coherent field. In general, biology recognizes the cell as the unit of life, genes as the basic unit of heredity. It is also understood today that all organisms survive by consuming and transforming energy and by regulating their internal environment to maintain a stable, the term biology is derived from the Greek word βίος, bios, life and the suffix -λογία, -logia, study of. The Latin-language form of the term first appeared in 1736 when Swedish scientist Carl Linnaeus used biologi in his Bibliotheca botanica, the first German use, Biologie, was in a 1771 translation of Linnaeus work. In 1797, Theodor Georg August Roose used the term in the preface of a book, karl Friedrich Burdach used the term in 1800 in a more restricted sense of the study of human beings from a morphological, physiological and psychological perspective. The science that concerns itself with these objects we will indicate by the biology or the doctrine of life. Although modern biology is a recent development, sciences related to. Natural philosophy was studied as early as the ancient civilizations of Mesopotamia, Egypt, the Indian subcontinent, however, the origins of modern biology and its approach to the study of nature are most often traced back to ancient Greece. While the formal study of medicine back to Hippocrates, it was Aristotle who contributed most extensively to the development of biology. Especially important are his History of Animals and other works where he showed naturalist leanings, and later more empirical works that focused on biological causation and the diversity of life. Aristotles successor at the Lyceum, Theophrastus, wrote a series of books on botany that survived as the most important contribution of antiquity to the plant sciences, even into the Middle Ages. Scholars of the medieval Islamic world who wrote on biology included al-Jahiz, Al-Dīnawarī, who wrote on botany, biology began to quickly develop and grow with Anton van Leeuwenhoeks dramatic improvement of the microscope. It was then that scholars discovered spermatozoa, bacteria, infusoria, investigations by Jan Swammerdam led to new interest in entomology and helped to develop the basic techniques of microscopic dissection and staining. Advances in microscopy also had a impact on biological thinking. In the early 19th century, a number of biologists pointed to the importance of the cell. Thanks to the work of Robert Remak and Rudolf Virchow, however, meanwhile, taxonomy and classification became the focus of natural historians
9.
Gill
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A gill is a respiratory organ found in many aquatic organisms that extracts dissolved oxygen from water and excretes carbon dioxide. The gills of species, such as hermit crabs, have adapted to allow respiration on land provided they are kept moist. The microscopic structure of a gill presents a surface area to the external environment. Many microscopic aquatic animals, and some larger but inactive ones, can absorb oxygen through the entire surface of their bodies. However, more complex or more active aquatic organisms usually require a gill or gills, Gills usually consist of thin filaments of tissue, branches, or slender, tufted processes that have a highly folded surface to increase surface area. A high surface area is crucial to the gas exchange of aquatic organisms, a cubic meter of air contains about 250 grams of oxygen at STP. The concentration of oxygen in water is lower than in air, in fresh water, the dissolved oxygen content is approximately 8 cm3/L compared to that of air which is 210 cm3/L. Water is 777 times more dense than air and is 100 times more viscous, oxygen has a diffusion rate in air 10,000 times greater than in water. The use of sac-like lungs to remove oxygen from water would not be efficient enough to sustain life, rather than using lungs, aseous exchange takes place across the surface of highly vascularised gills over which a one-way current of water is kept flowing by a specialised pumping mechanism. The density of the water prevents the gills from collapsing and lying on top of each other, with the exception of some aquatic insects, the filaments and lamellae contain blood or coelomic fluid, from which gases are exchanged through the thin walls. The blood carries oxygen to other parts of the body, carbon dioxide passes from the blood through the thin gill tissue into the water. Gills or gill-like organs, located in different parts of the body, are found in groups of aquatic animals, including mollusks, crustaceans, insects, fish. The gills of vertebrates typically develop in the walls of the pharynx, most species employ a countercurrent exchange system to enhance the diffusion of substances in and out of the gill, with blood and water flowing in opposite directions to each other. The gills are composed of filaments, the gill lamellae. When a fish breathes, it draws in a mouthful of water at regular intervals, then it draws the sides of its throat together, forcing the water through the gill openings, so it passes over the gills to the outside. Fish gill slits may be the ancestors of the tonsils, thymus glands. Adjacent slits are separated by a gill arch from which projects a cartilaginous gill ray. This gill ray is the support for the sheet-like interbranchial septum, the base of the arch may also support gill rakers, projections into the pharyngeal cavity that help to prevent large pieces of debris from damaging the delicate gills
10.
Fin
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A fin is a thin component or appendage attached to a larger body or structure. Fins typically function as foils that produce lift or thrust, or provide the ability to steer or stabilize motion while traveling in water, air, fins are also used to increase surface areas for heat transfer purposes, or simply as ornamentation. Fins first evolved on fish as a means of locomotion, Fish fins are used to generate thrust and control the subsequent motion. Fish, and other animals such as cetaceans, actively propel and steer themselves with pectoral. As they swim, they use other fins, such as dorsal and anal fins to achieve stability, foil shaped fins generate thrust when moved, the lift of the fin sets water or air in motion and pushes the fin in the opposite direction. Aquatic animals get significant thrust by moving back and forth in water. Often the tail fin is used, but some aquatic animals generate thrust from pectoral fins, fins can also generate thrust if they are rotated in air or water. Turbines and propellers use a number of rotating fins, also called foils, wings, propellers use the fins to translate torquing force to lateral thrust, thus propelling an aircraft or ship. Turbines work in reverse, using the lift of the blades to generate torque, cavitation can be a problem with high power applications, resulting in damage to propellers or turbines, as well as noise and loss of power. Cavitation occurs when negative pressure causes bubbles to form in a liquid and it can cause significant damage and wear. Cavitation damage can occur to the tail fins of powerful swimming marine animals, such as dolphins. Cavitation is more likely to occur near the surface of the ocean, even if they have the power to swim faster, dolphins may have to restrict their speed because collapsing cavitation bubbles on their tail are too painful. Cavitation also slows tuna, but for a different reason, unlike dolphins, these fish do not feel the bubbles, because they have bony fins without nerve endings. Nevertheless, they cannot swim faster because the cavitation bubbles create a film around their fins that limits their speed. Lesions have been found on tuna that are consistent with cavitation damage, scombrid fishes are particularly high-performance swimmers. Along the margin at the rear of their bodies is a line of small rayless, non-retractable fins, there has been much speculation about the function of these finlets. Fish use multiple fins, so it is possible that a given fin can have an interaction with another fin. In particular, the fins immediately upstream of the fin may be proximate fins that can directly affect the flow dynamics at the caudal fin
11.
Shellfish
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Shellfish is a culinary and fisheries term for exoskeleton-bearing aquatic invertebrates used as food, including various species of molluscs, crustaceans, and echinoderms. Although most kinds of shellfish are harvested from saltwater environments, some kinds are found in freshwater, in addition, a few species of land crabs are eaten, for example Cardisoma guanhumi in the Caribbean. Despite the name, shellfish are not a kind of fish, many varieties of shellfish are actually closely related to insects and arachnids, making up one of the main classes of the phylum Arthropoda. Cephalopods and bivalves are molluscs, as are snails and slugs, familiar marine molluscs used as a food source by humans include many species of clams, mussels, oysters, winkles, and scallops. Some crustaceans commonly eaten are shrimp, lobsters, crayfish, echinoderms are not as frequently harvested for food as molluscs and crustaceans, however, sea urchin roe is quite popular in many parts of the world. Most shellfish eat a diet composed primarily of phytoplankton and zooplankton, Shellfish are among the most common food allergens. The term shellfish is used broadly and specifically. In common parlance, as in having shellfish for dinner, it can refer to anything from clams and oysters to lobster, for regulatory purposes it is often narrowly defined as filter-feeding molluscs such as clams, mussels, and oyster to the exclusion of crustaceans and all else. Although the term is applied to marine species, edible freshwater invertebrates such as crayfish. Although their shells may differ, all shellfish are invertebrates, the word shellfish is both singular and plural, the rarely used shellfishes is sometimes employed to distinguish among various types of shellfish. Archaeological finds have shown that humans have been making use of shellfish as an item for hundreds of thousands of years. In the Japanese cuisine, chefs often use shellfish and their roe in different dishes, sushi features both raw and cooked shellfish. Sashimi primarily consists of fresh raw seafood, sliced into thin pieces. Both sushi and sashimi are served with soy sauce and wasabi paste, thinly sliced pickled ginger root, and a simple garnish such as shiso or finely shredded daikon radish, or both. Lobster in particular is a delicacy in the United States. Lobsters are eaten on much of the East Coast, the American lobster ranges from Newfoundland down to about the Carolinas, a typical meal involves boiling the lobster with some slight seasoning and then serving it with drawn butter, baked potato, and corn on the cob. Clamming is done both commercially and recreationally along the Northeast coastline of the US, various type of clams are incorporated into the cuisine of New England. The soft-shelled clam is eaten fried or steamed
12.
Cuttlefish
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Cuttlefish are marine animals of the order Sepiida. They belong to the class Cephalopoda, which also includes squid, octopuses, cuttlefish have a unique internal shell, the cuttlebone. Despite their name, cuttlefish are not fish but molluscs, cuttlefish have large, W-shaped pupils, eight arms, and two tentacles furnished with denticulated suckers, with which they secure their prey. They generally range in size from 15 to 25 cm, with the largest species, Sepia apama, reaching 50 cm in mantle length, cuttlefish eat small molluscs, crabs, shrimp, fish, octopus, worms, and other cuttlefish. Their predators include dolphins, sharks, fish, seals, seabirds, the average life expectancy of a cuttlefish is about one to two years. Recent studies indicate cuttlefish are among the most intelligent invertebrates, cuttlefish also have one of the largest brain-to-body size ratios of all invertebrates. The cuttle in cuttlefish comes from the Old English name for the species, cudele, which may be cognate with the Old Norse koddi, the Greco-Roman world valued the cuttlefish as a source of the unique brown pigment the creature releases from its siphon when it is alarmed. The word for it in both Greek and Latin, sepia, now refers to a pigment in English. The family Sepiidae, which contains all cuttlefish, inhabit tropical/temperate ocean waters and they are mostly shallow-water animals, although they are known to go to depths of about 600 m. By the time the family evolved, ostensibly in the Old World, the common cuttlefish, is found in the Mediterranean, and North and Baltic Seas, although it has been suggested populations occur as far south as South Africa. They are found in sublittoral depths, between the low line and the edge of the continental shelf, to about 180 m. The cuttlefish is listed under the Red List category of Least Concern by the IUCN Red List of Threatened Species, ocean acidification, however, caused largely by higher levels of carbon dioxide emitted into the atmosphere, is cited as a potential threat. Cuttlefish possess a structure called the cuttlebone, which is porous and is made of aragonite. The pores provide it with buoyancy, which the cuttlefish regulates by changing the ratio in the chambered cuttlebone via the ventral siphuncle. Each species cuttlebone has a shape, size, and pattern of ridges or texture. The cuttlebone is unique to cuttlefish, and is one of the features that distinguish them from their squid relatives, cuttlefish, like other cephalopods, have sophisticated eyes. The organogenesis and the structure of the cephalopod eye fundamentally differ from those of vertebrates such as humans. Superficial similarities between cephalopod and vertebrate eyes are thought to be examples of convergent evolution, the cuttlefish pupil is a smoothly curving W-shape
Hawes, J. W. (1879). "Fisheries". The American Cyclopædia.
Hawes, J. W. (1879). "
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