Marine life, or sea life or ocean life, is the plants and other organisms that live in the salt water of the sea or ocean, or the brackish water of coastal estuaries. At a fundamental level, marine life affects the nature of the planet. Marine organisms produce oxygen. Shorelines are in part shaped and protected by marine life, some marine organisms help create new land. Most life forms evolved in marine habitats. By volume, oceans provide about 90 percent of the living space on the planet; the earliest vertebrates appeared in the form of fish, which live in water. Some of these evolved into amphibians which spend portions of their lives in water and portions on land. Other fish evolved into land mammals and subsequently returned to the ocean as seals, dolphins or whales. Plant forms such as kelp and algae grow in the water and are the basis for some underwater ecosystems. Plankton, phytoplankton, are key primary producers forming the general foundation of the ocean food chain. Marine invertebrates exhibit a wide range of modifications to survive in poorly oxygenated waters, including breathing tubes and gills.
Fish have gills instead of lungs, although some species such as the lungfish, have both. Marine mammals, such as dolphins, whales and seals need to surface periodically to breathe air; some amphibians are able to absorb oxygen through their skin. A total of 230,000 documented marine species exist, including about 20,000 species of marine fish, with some two million marine species yet to be documented. Marine species range in size from the microscopic, including plankton and phytoplankton which can be as small as 0.02 micrometres, to huge cetaceans, including the blue whale – the largest known animal reaching up to 33 metres in length. Marine microorganisms, including bacteria and viruses, constitute about 70% of the total marine biomass. There is no life without water – the "solvent of life"; the Nobel Prize winner Albert Szent-Györgyi referred to water as the mater und matrix: the mother and womb of life. The abundance of surface water on Earth is a unique feature in the Solar System. Earth's hydrosphere consists chiefly of the oceans, but technically includes all water surfaces in the world, including inland seas, lakes and underground waters down to a depth of 2,000 metres The deepest underwater location is Challenger Deep of the Mariana Trench in the Pacific Ocean, having a depth of 10,911 metres.
The mass of the oceans is 1.35×1018 metric tons, or about 1/4400 of Earth's total mass. The oceans cover an area of 3.618×108 km2 with a mean depth of 3682 m, resulting in an estimated volume of 1.332×109 km3. If all of Earth's crustal surface was at the same elevation as a smooth sphere, the depth of the resulting world ocean would be about 2.7 kilometres. About 97.5% of the water on Earth is saline. Most fresh water -- about 68.7 % -- is present as ice in ice glaciers. The average salinity of Earth's oceans is about 35 grams of salt per kilogram of seawater. Most of the salt in the ocean comes from the erosion of rocks on land; some salts are extracted from cool igneous rocks. The oceans are a reservoir of dissolved atmospheric gases, which are essential for the survival of many aquatic life forms. Sea water has an important influence on the world's climate, with the oceans acting as a large heat reservoir. Shifts in the oceanic temperature distribution can cause significant weather shifts, such as the El Niño-Southern Oscillation.
Altogether the ocean occupies 71 percent of the world surface, averaging nearly 3.7 kilometres in depth. By volume, the ocean provides about 90 percent of the living space on the planet; the science fiction writer Arthur C. Clarke has pointed out it would be more appropriate to refer to planet Earth as planet Ocean; the Earth is about 4.54 billion years old. The earliest undisputed evidence of life on Earth dates from at least 3.5 billion years ago, during the Eoarchean Era after a geological crust started to solidify following the earlier molten Hadean Eon. Microbial mat fossils have been found in 3.48 billion-year-old sandstone in Western Australia. Other early physical evidence of a biogenic substance is graphite in 3.7 billion-year-old metasedimentary rocks discovered in Western Greenland as well as "remains of biotic life" found in 4.1 billion-year-old rocks in Western Australia. According to one of the researchers, "If life arose quickly on Earth … it could be common in the universe."All organisms on Earth are descended from a common ancestor or ancestral gene pool.
Energetic chemistry is thought to have produced a self-replicating molecule around 4 billion years ago, half a billion years the last common ancestor of all life existed. The current scientific consensus is that the complex biochemistry that makes up life came from simpler chemical reactions; the beginning of life may have included self-replicating molecules such as RNA and the assembly of simple cells. In 2016 scientists reported a set of 355 genes from the last universal common ancestor of all life, including microorganisms, living on Earth. Current species are a stage in the process of evolution, with their diversity the product of a long series of speciation and extinction events; the common descent of organisms was first deduced from four simple facts about organisms: First, they have geographic distributions that cannot be explained by local adaptation. Second, the diversity of life is not a set of unique organisms, but organisms that share morphological similarities. Third, vestigial traits with no clear purp
In biology, a species is the basic unit of classification and a taxonomic rank of an organism, as well as a unit of biodiversity. A species is defined as the largest group of organisms in which any two individuals of the appropriate sexes or mating types can produce fertile offspring by sexual reproduction. Other ways of defining species include their karyotype, DNA sequence, behaviour or ecological niche. In addition, paleontologists use the concept of the chronospecies since fossil reproduction cannot be examined. While these definitions may seem adequate, when looked at more they represent problematic species concepts. For example, the boundaries between related species become unclear with hybridisation, in a species complex of hundreds of similar microspecies, in a ring species. Among organisms that reproduce only asexually, the concept of a reproductive species breaks down, each clone is a microspecies. All species are given a two-part name, a "binomial"; the first part of a binomial is the genus.
The second part is called the specific epithet. For example, Boa constrictor is one of four species of the genus Boa. None of these is satisfactory definitions, but scientists and conservationists need a species definition which allows them to work, regardless of the theoretical difficulties. If species were fixed and distinct from one another, there would be no problem, but evolutionary processes cause species to change continually, to grade into one another. Species were seen from the time of Aristotle until the 18th century as fixed kinds that could be arranged in a hierarchy, the great chain of being. In the 19th century, biologists grasped. Charles Darwin's 1859 book The Origin of Species explained how species could arise by natural selection; that understanding was extended in the 20th century through genetics and population ecology. Genetic variability arises from mutations and recombination, while organisms themselves are mobile, leading to geographical isolation and genetic drift with varying selection pressures.
Genes can sometimes be exchanged between species by horizontal gene transfer. Viruses are a special case, driven by a balance of mutation and selection, can be treated as quasispecies. Biologists and taxonomists have made many attempts to define species, beginning from morphology and moving towards genetics. Early taxonomists such as Linnaeus had no option but to describe what they saw: this was formalised as the typological or morphological species concept. Ernst Mayr emphasised reproductive isolation, but this, like other species concepts, is hard or impossible to test. Biologists have tried to refine Mayr's definition with the recognition and cohesion concepts, among others. Many of the concepts are quite similar or overlap, so they are not easy to count: the biologist R. L. Mayden recorded about 24 concepts, the philosopher of science John Wilkins counted 26. Wilkins further grouped the species concepts into seven basic kinds of concepts: agamospecies for asexual organisms biospecies for reproductively isolated sexual organisms ecospecies based on ecological niches evolutionary species based on lineage genetic species based on gene pool morphospecies based on form or phenotype and taxonomic species, a species as determined by a taxonomist.
A typological species is a group of organisms in which individuals conform to certain fixed properties, so that pre-literate people recognise the same taxon as do modern taxonomists. The clusters of variations or phenotypes within specimens would differentiate the species; this method was used as a "classical" method of determining species, such as with Linnaeus early in evolutionary theory. However, different phenotypes are not different species. Species named in this manner are called morphospecies. In the 1970s, Robert R. Sokal, Theodore J. Crovello and Peter Sneath proposed a variation on this, a phenetic species, defined as a set of organisms with a similar phenotype to each other, but a different phenotype from other sets of organisms, it differs from the morphological species concept in including a numerical measure of distance or similarity to cluster entities based on multivariate comparisons of a reasonably large number of phenotypic traits. A mate-recognition species is a group of sexually reproducing organisms that recognize one another as potential mates.
Expanding on this to allow for post-mating isolation, a cohesion species is the most inclusive population of individuals having the potential for phenotypic cohesion through intrinsic cohesion mechanisms. A further development of the recognition concept is provided by the biosemiotic concept of species. In microbiology, genes can move even between distantly related bacteria extending to the whole bacterial domain; as a rule of thumb, microbiologists have assumed that kinds of Bacteria or Archaea with 16S ribosomal RNA gene sequences more similar than 97% to each other need to be checked by DNA-DNA hybridisation to decide if they belong to the same species or not. This concept was narrowed in 2006 to a similarity of 98.7%. DNA-DNA hybri
Daniel Pauly is a French-born marine biologist, well known for his work in studying human impacts on global fisheries. He is a professor and the project leader of the Sea Around Us Project at the UBC Institute for the Oceans and Fisheries at the University of British Columbia, he served as Director of the UBC Fisheries Centre from November 2003 to October 2008. Pauly was born in France, he grew up, however, in La Chaux de Fonds, Switzerland in what was called a strange "Dickensian" childhood where he was forced to stay as a live-in servant to a new family. For the first 16 years of his life, Pauly lived an inward life as he was mixed race in an all white town, finding solace in books/reading and model construction. At 16 he ran away and put himself through high school in Wuppertal, Germany after one year working with disabled people for a local church-run institution, his work led to a scholarship to the University of Kiel. It was at the University of Kiel, he said. He wanted to devote his life to an applied job where he could help people.
He did a master's degree at Kiel University under Gotthilf Hempel on "The ecology and fishery of a small West African lagoon". Pauly spent two years conducting trawling surveys as a member of a German-Indonesian project aiming at introducing this new gear, he began to write on tropical fisheries management. Pauly completed his Ph. D. at Kiel University in Germany, again under Hempel, in which he established strong relationships between the surface area of gills and the growth of fishes and aquatic invertebrates. After his Ph. D. Pauly worked for 15 years at the International Center for Living and Aquatic Resources Management, in Manila, Philippines. Early in his career at ICLARM, Pauly worked in the tropics and developed new methods for estimating fish populations. Pauly helped to design and perfect methods using length-frequency data instead of the age of fish to estimate parameters of fisheries statistics such as growth and mortality, he helped develop two major projects: ELEFAN and FishBase. ELEFAN made it possible to use length-frequency data to estimate the growth and mortality of fishes.
FishBase is an online encyclopedia of fish and fisheries information comprising information on more than 30,000 different species. Both projects received worldwide attention and through multiple upgrades and additions, are still prominent in fisheries biology. Through the 1990s, Pauly’s work centered on the effects of overfishing; the author of several books and more than 500 scientific papers, Pauly is a prolific writer and communicator. He developed the concept of shifting baselines in 1995 and authored the seminal paper, Fishing down marine food webs, in 1998. For working to protect the environment, he earned a place in the "Scientific American 50" in 2003, the same year The New York Times labeled him an "iconoclast". Pauly won the International Cosmos Prize in 2005, the Volvo Environment Prize in 2006, the Excellence in Ecology Prize and Ted Danson Ocean Hero Award in 2007, the Ramon Margalef Prize in Ecology and Environmental Sciences in 2008, the Nierenberg Prize for Science in the Public Interest from the Scripps Institution of Oceanography in 2012.
In 2015, Pauly received the Peter Benchley Ocean Award for Excellence in Science. In 2016, he was honored in Paris with the Albert Ier Grand Medal in the Science category. In 2017, he received, together with Dirk Zeller as part of the Sea Around Us leading team, the Ocean Award in the Science category. In 2017 and on French National Day, he was named Chevalier de la Légion D’Honneur. Pauly has written several books, including Darwin's Fishes, Five Easy Pieces: How Fishing Impacts Marine Ecosystems and Gasping Fish and Panting Squids: Oxygen and the Growth of Water-Breathing Animals. To date, he expresses opinions about public policy, he argues that governments should abolish subsidies to fishing fleets and establish marine reserves. He is a member of the Board of Oceana. In a 2009 article written for The New Republic, Pauly compares today's fisheries to a global Ponzi scheme. Publications by Daniel PaulySelect publications Pauly D and Zeller D Catch reconstructions reveal that global marine fisheries catches are higher than reported and declining.
Nature Communications, 1-9. Pauly D 5 easy pieces: how fishing impacts marine ecosystems Island Press. ISBN 978-1-59726-719-9. Pauly D "Aquacalypse Now" The New Republic, September 28. Pauly D, Christensen V, Guénette S, Pitcher TJ, Sumaila UR, Walters CJ, Watson R, Zeller D "Towards sustainability in world fisheries" Nature, 418: 689-695. Pauly D "Why squids, though not fish, may be better understood by pretending they are". In: Payne, A. I. L. Lipinkski, M. R. Clarke, M. R. and Roeleveld, M. A. C.. Cephalopod biodiversity and Evolution. South African Journal of Marine Science, 20: 47-58. Pauly D, Christensen V, Dalsgaard J, Froese R and Torres F "Fishing down marine food webs" Science, 279: 860-863. Pauly D "Beyond our original horizons: the tropicalization of Beverton and Holt". Reviews in Fish Biology and Fisheries, 8: 307-334. Pauly D "Anecdotes and the shifting baseline syndrome of fisheries". TREE 10: 430 Pauly D and Christensen V "Primary production required to sustain global fisheries" Nature, 374: 255-257.
Pauly D "The relationships between gill surface area and growth performance in fish: a generalization of von Bertalanffy’s theory of gr
A database is an organized collection of data stored and accessed electronically from a computer system. Where databases are more complex they are developed using formal design and modeling techniques; the database management system is the software that interacts with end users and the database itself to capture and analyze the data. The DBMS software additionally encompasses; the sum total of the database, the DBMS and the associated applications can be referred to as a "database system". The term "database" is used to loosely refer to any of the DBMS, the database system or an application associated with the database. Computer scientists may classify database-management systems according to the database models that they support. Relational databases became dominant in the 1980s; these model data as rows and columns in a series of tables, the vast majority use SQL for writing and querying data. In the 2000s, non-relational databases became popular, referred to as NoSQL because they use different query languages.
Formally, a "database" refers to the way it is organized. Access to this data is provided by a "database management system" consisting of an integrated set of computer software that allows users to interact with one or more databases and provides access to all of the data contained in the database; the DBMS provides various functions that allow entry and retrieval of large quantities of information and provides ways to manage how that information is organized. Because of the close relationship between them, the term "database" is used casually to refer to both a database and the DBMS used to manipulate it. Outside the world of professional information technology, the term database is used to refer to any collection of related data as size and usage requirements necessitate use of a database management system. Existing DBMSs provide various functions that allow management of a database and its data which can be classified into four main functional groups: Data definition – Creation and removal of definitions that define the organization of the data.
Update – Insertion and deletion of the actual data. Retrieval – Providing information in a form directly usable or for further processing by other applications; the retrieved data may be made available in a form the same as it is stored in the database or in a new form obtained by altering or combining existing data from the database. Administration – Registering and monitoring users, enforcing data security, monitoring performance, maintaining data integrity, dealing with concurrency control, recovering information, corrupted by some event such as an unexpected system failure. Both a database and its DBMS conform to the principles of a particular database model. "Database system" refers collectively to the database model, database management system, database. Physically, database servers are dedicated computers that hold the actual databases and run only the DBMS and related software. Database servers are multiprocessor computers, with generous memory and RAID disk arrays used for stable storage.
RAID is used for recovery of data. Hardware database accelerators, connected to one or more servers via a high-speed channel, are used in large volume transaction processing environments. DBMSs are found at the heart of most database applications. DBMSs may be built around a custom multitasking kernel with built-in networking support, but modern DBMSs rely on a standard operating system to provide these functions. Since DBMSs comprise a significant market and storage vendors take into account DBMS requirements in their own development plans. Databases and DBMSs can be categorized according to the database model that they support, the type of computer they run on, the query language used to access the database, their internal engineering, which affects performance, scalability and security; the sizes and performance of databases and their respective DBMSs have grown in orders of magnitude. These performance increases were enabled by the technology progress in the areas of processors, computer memory, computer storage, computer networks.
The development of database technology can be divided into three eras based on data model or structure: navigational, SQL/relational, post-relational. The two main early navigational data models were the hierarchical model and the CODASYL model The relational model, first proposed in 1970 by Edgar F. Codd, departed from this tradition by insisting that applications should search for data by content, rather than by following links; the relational model employs sets of ledger-style tables, each used for a different type of entity. Only in the mid-1980s did computing hardware become powerful enough to allow the wide deployment of relational systems. By the early 1990s, relational systems dominated in all large-scale data processing applications, as of 2018 they remain dominant: IBM DB2, Oracle, MySQL, Microsoft SQL Server are the most searched DBMS; the dominant database language, standardised SQL for the relational model, has influenced database languages for other data models. Object databases were developed in the 1980s to overcome the inconvenience of object-relational impedance mismatch, which led to the coining of the term "post-relational" and the development of hybrid object-relational databas
An author is the creator or originator of any written work such as a book or play, is thus a writer. More broadly defined, an author is "the person who originated or gave existence to anything" and whose authorship determines responsibility for what was created; the first owner of a copyright is the person who created the work i.e. the author. If more than one person created the work a case of joint authorship can be made provided some criteria are met. In the copyright laws of various jurisdictions, there is a necessity for little flexibility regarding what constitutes authorship; the United States Copyright Office, for example, defines copyright as "a form of protection provided by the laws of the United States to authors of "original works of authorship". Holding the title of "author" over any "literary, musical, certain other intellectual works" gives rights to this person, the owner of the copyright the exclusive right to engage in or authorize any production or distribution of their work.
Any person or entity wishing to use intellectual property held under copyright must receive permission from the copyright holder to use this work, will be asked to pay for the use of copyrighted material. After a fixed amount of time, the copyright expires on intellectual work and it enters the public domain, where it can be used without limit. Copyright laws in many jurisdictions – following the lead of the United States, in which the entertainment and publishing industries have strong lobbying power – have been amended since their inception, to extend the length of this fixed period where the work is controlled by the copyright holder. However, copyright is the legal reassurance that one owns his/her work. Technically, someone owns their work from the time. An interesting aspect of authorship emerges with copyright in that, in many jurisdictions, it can be passed down to another upon one's death; the person who inherits the copyright enjoys the same legal benefits. Questions arise as to the application of copyright law.
How does it, for example, apply to the complex issue of fan fiction? If the media agency responsible for the authorized production allows material from fans, what is the limit before legal constraints from actors and other considerations, come into play? Additionally, how does copyright apply to fan-generated stories for books? What powers do the original authors, as well as the publishers, have in regulating or stopping the fan fiction? This particular sort of case illustrates how complex intellectual property law can be, since such fiction may involved trademark law, likeness rights, fair use rights held by the public, many other interacting complications. Authors may portion out different rights they hold to different parties, at different times, for different purposes or uses, such as the right to adapt a plot into a film, but only with different character names, because the characters have been optioned by another company for a television series or a video game. An author may not have rights when working under contract that they would otherwise have, such as when creating a work for hire, or when writing material using intellectual property owned by others.
In literary theory, critics find complications in the term author beyond what constitutes authorship in a legal setting. In the wake of postmodern literature, critics such as Roland Barthes and Michel Foucault have examined the role and relevance of authorship to the meaning or interpretation of a text. Barthes challenges the idea, he writes, in his essay "Death of the Author", that "it is language which speaks, not the author". The words and language of a text itself determine and expose meaning for Barthes, not someone possessing legal responsibility for the process of its production; every line of written text is a mere reflection of references from any of a multitude of traditions, or, as Barthes puts it, "the text is a tissue of quotations drawn from the innumerable centres of culture". With this, the perspective of the author is removed from the text, the limits imposed by the idea of one authorial voice, one ultimate and universal meaning, are destroyed; the explanation and meaning of a work does not have to be sought in the one who produced it, "as if it were always in the end, through the more or less transparent allegory of the fiction, the voice of a single person, the author'confiding' in us".
The psyche, fanaticism of an author can be disregarded when interpreting a text, because the words are rich enough themselves with all of the traditions of language. To expose meanings in a written work without appealing to the celebrity of an author, their tastes, vices, is, to Barthes, to allow language to speak, rather than author. Michel Foucault argues in his essay "What is an author?" that all authors are writers, but not all writers are authors. He states that "a private letter may have a signatory—it does not have an author". For a reader to assign the title of author upon any written work is to attribute certain standards upon the text which, for Foucault, are working in conjunction with the idea of "the author function". Foucault's author function is the idea that an author exists only as a fun
Fish are gill-bearing aquatic craniate animals that lack limbs with digits. They form a sister group to the tunicates. Included in this definition are the living hagfish and cartilaginous and bony fish as well as various extinct related groups. Tetrapods emerged within lobe-finned fishes, so cladistically they are fish as well. However, traditionally fish are rendered 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, unless it is used in the cladistic sense, including tetrapods. 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.
Many fish of the Paleozoic developed external armor. The first fish with jaws appeared in the Silurian period, after which many became formidable marine predators rather than just the prey of arthropods. Most fish are ectothermic, allowing their body temperatures to vary as ambient temperatures change, though some of the large active swimmers like white shark and tuna can hold a higher core temperature. Fish can communicate in their underwater environments through the use of acoustic communication. Acoustic communication in fish involves the transmission of acoustic signals from one individual of a species to another; the production of sounds as a means of communication among fish is most used in the context of feeding, aggression or courtship behaviour. The sounds emitted by fish can vary depending on the stimulus involved, they can produce either stridulatory sounds by moving components of the skeletal system, or can produce non-stridulatory sounds by manipulating specialized organs such as the swimbladder.
Fish are abundant in most bodies of water. They can be found in nearly all aquatic environments, from high mountain streams to the abyssal and hadal depths of the deepest oceans, although no species has yet been documented in the deepest 25% of the ocean. With 33,600 described species, fish exhibit greater species diversity than any other group of vertebrates. Fish are an important resource for humans worldwide as food. Commercial and subsistence fishers hunt fish in wild fisheries or farm them in ponds or in cages in the ocean, they are caught by recreational fishers, kept as pets, raised by fishkeepers, exhibited in public aquaria. Fish have had a role in culture through the ages, serving as deities, religious symbols, as the subjects of art and movies. Fish do not represent a monophyletic group, therefore the "evolution of fish" is not studied as a single event. Early fish from the fossil record are represented by a group of small, armored fish known as ostracoderms. Jawless fish lineages are 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, or a combination of factors. 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 larval form into adulthood, although the reverse is the case. Fish are a paraphyletic group: that is, any clade containing all fish contains the tetrapods, which are not fish. For this reason, groups such as the "Class Pisces" seen in older reference works are no longer used in formal classifications. Traditional classification divides fish into three extant classes, with extinct forms sometimes classified within the tree, sometimes as their own classes: Class Agnatha Subclass Cyclostomata Subclass Ostracodermi † Class Chondrichthyes Subclass Elasmobranchii Subclass Holocephali Class Placodermi † Class Acanthodii † Class Osteichthyes Subclass Actinopterygii Subclass Sarcopterygii The above scheme is the one most encountered in non-specialist and general works.
Many of the above groups are paraphyletic, in that they have given rise to successive groups: Agnathans are ancestral to Chondrichthyes, who again have given rise to Acanthodiians, the ancestors of Osteichthyes. With the arrival of phylogenetic nomenclature, the fishes has been split up into a more detailed scheme, with the following major groups: Class Myxini Class Pteraspidomorphi † Class Thelodonti † Class Anaspida † Class Petromyzontida or Hyperoartia Petromyzontidae Class Conodonta † Class Cephalaspidomorphi † Galeaspida † Pituriaspida † Osteostraci † Infraphylum Gnathostomata Class Placodermi † Class Chondrichthyes Class Acanthodii † Superclass Osteichthy
FishBase is a global species database of fish species. It is the most extensively accessed online database on adult finfish on the web. Over time it has "evolved into a dynamic and versatile ecological tool", cited in scholarly publications. FishBase provides comprehensive species data, including information on taxonomy, geographical distribution and morphology, behaviour and habitats and population dynamics as well as reproductive and genetic data. There is access to tools such as trophic pyramids, identification keys, biogeographical modelling and fishery statistics and there are direct species level links to information in other databases such as LarvalBase, GenBank, the IUCN Red List and the Catalog of Fishes; as of November 2018, FishBase included descriptions of 34,000 species and subspecies, 323,200 common names in 300 languages, 58,900 pictures, references to 55,300 works in the scientific literature. The site has about 700,000 unique visitors per month; the origins of FishBase go back to the 1970s, when the fisheries scientist Daniel Pauly found himself struggling to test a hypothesis on how the growing ability of fish was affected by the size of their gills.
Hypotheses, such as this one, could be tested only if large amounts of empirical data were available. At the time, fisheries management used analytical models which required estimates for fish growth and mortality, it can be difficult for fishery scientists and managers to get the information they need on the species that concern them, because the relevant facts can be scattered across and buried in numerous journal articles, reports and other sources. It can be difficult for people in developing countries who need such information. Pauly believed that the only practical way fisheries managers could access the volume of data they needed was to assemble and consolidate all the data available in the published literature into some central and accessed repository; such a database would be useful if the data has been standardised and validated. This would mean that when scientists or managers need to test a new hypothesis, the available data will be there in a validated and accessible form, there will be no need to create a new dataset and have to validate it.
Pauly recruited Rainer Froese, the beginnings of a software database along these lines was encoded in 1988. This database confined to tropical fish, became the prototype for FishBase. FishBase was subsequently extended to cover all finfish, was launched on the Web in August 1996, it is now the most accessed online database for fish in the world. In 1995 the first CD-ROM was released as "FishBase 100". Subsequent CDs have been released annually; the software runs on Microsoft Access. FishBase does not detail the early and juvenile stages of fish. In 1999 a complimentary database, called LarvalBase, went online under the supervision of Bernd Ueberschär, it covers ichthyoplankton and the juvenile stage of fishes, with detailed data on fish eggs and larvae, fish identification, as well as data relevant to the rearing of young fish in aquaculture. Given FishBase's success, there was a demand for a database covering forms of aquatic life other than finfish; this resulted, in the birth of SeaLifeBase. The long-term goal of SeaLifeBase is to develop an information system modelled on FishBase, but including all forms of aquatic life, both marine and freshwater, apart from the finfish which FishBase specialises in.
Altogether, there are about 300,000 known species in this category. As awareness of FishBase has grown among fish specialists, it has attracted over 2,310 contributors and collaborators. Since 2000 FishBase has been supervised by a consortium of nine international institutions. To date, the FishBase consortium has grown to twelve members; the GEOMAR - Helmholtz Centre for Ocean Research for Ocean Research Kiel in Germany, functions as the coordinating body. Catalog of Fishes List of online encyclopedias Bailly N Why there may be discrepancies in the assessment of scientific names between the Catalog of Fishes and FishBase Version 2, 6 May 2010. Bailly N, Reyes Jr R, Atanacio R and Froese R "Simple Identification Tools in FishBase" In: Nimis PL and Vignes Lebbe R. Tools for Identifying Biodiversity: Progress and Problems, pages 31–36. ISBN 978-88-8303-295-0. Christensen V, CJ Walters, R Ahrens, J Alder, J Buszowski, LB Christensen, WWL Cheung, J Dunne, R Froese, V Karpouzi, K Kaschner, K Kearney, S Lai, V Lam, MLD Palomares, A Peters-Mason, C Piroddia, JL Sarmiento, J Steenbeek, R Sumaila, R Watson, D Zeller and D Pauly Database-driven models of the world's Large Marine Ecosystems Ecological Modelling, 220: 1984–1996.
Froese R "The science in Fishbase" In: Villy Christensen and Jay Maclean Ecosystem Approaches to Fisheries: A Global Perspective, Cambridge University Press, pages 47–54. ISBN 978-0-521-13022-6. Froese R and Pauly D FishBase 2000: concepts and data sources ICLARM, Philippines. Froese R and Pauly D "Fishbase as a tool for comparing the life history patterns of flatfish" Netherlands Journal of Sea Research, 32: 235–239. Nauen CE A public electronic archive on the world’s fishes in support of sustainable fisheries CTA/Commonwealth Secretariat Seminar, Expert Meeting on ACP-EU Fisheries Relations, Brussels. Palomares, M. L. D. N. Bailly and D. Pauly FishBase, SeaLifeBase and database-driven ecosystem modeling p. 156-158. In: M. L. D. Palomares, L. Morissette, A. Cisnero-Montemayor, D. Varkey, M. Coll and C. Piroddi Ecopath 25 Years Conference Proceedings: Extended Abstracts. UBC Fisheries Centre Resear