''Corophium'' is a

genus Genus ( plural genera ) is a taxonomic rank used in the biological classification of living and fossil organisms as well as viruses. In the hierarchy of biological classification, genus comes above species and below family. In binomial n ...

of the amphipod

family Family (from la, familia) is a group of people related either by consanguinity (by recognized birth) or affinity (by marriage or other relationship). The purpose of the family is to maintain the well-being of its members and of society. Idea ...

Corophiidae Corophiidae is a family of amphipods, containing the following genera: *'' Americorophium'' Bousfield & Hoover, 1997 *'' Anonychocheirus'' Moore & Myers, 1983 *''Apocorophium'' Bousfield & Hoover, 1997 *'' Bathyphotis'' Stephensen, 1944 *''Chaet ...

. Formerly a much larger genus, many species have been transferred to segregate genera such as '' Monocorophium'' and ''

Crassicorophium ''Crassicorophium'' is a genus of amphipod crustacean Crustaceans (Crustacea, ) form a large, diverse arthropod taxon which includes such animals as decapods, seed shrimp, branchiopods, fish lice, krill, remipedes, isopods, barnacles, co ...

''.

Species

''Corophium'' contains 12 species, after the genus was divided into a number of new genera in 1997: *'' Corophium arenarium'' Crawford, 1937 *'' Corophium bicaudatus'' Linnaeus, 1761 *'' Corophium colo'' Lowry, 2004 *'' Corophium denticulatum'' Ren, 1995 *'' Corophium grossipes'' Linnaeus, 1767 *'' Corophium laevicorne'' Sowinsky, 1880 *'' Corophium linearis'' Pennant, 1777 *'' Corophium longicornis'' J. C. Fabricius, 1779 *''

Corophium multisetosum ''Corophium multisetosum'' is a small (up to 9mm) European amphipod crustacean of the family Corophiidae. It builds mud burrows in clay or sand in fresh or weakly brackish Brackish water, sometimes termed brack water, is water occurring in ...

'' Stock, 1952 *'' Corophium orientale'' Schellenberg, 1928 *'' Corophium urdaibaiense'' Marquiegui & Perez, 2006 *''

Corophium volutator ''Corophium volutator'' is a species of amphipod crustacean in the family Corophiidae. It is found in mudflats of the northern Atlantic Ocean The Atlantic Ocean is the second-largest of the world's five oceans, with an area of about . It ...

'' (Pallas, 1766)

''Corophium arenarium''

''C. arenarium'' may reach 7 mm long and looks very similar to '' C. volutator''. It burrows in bottom sediments, between 10 and 60 metres deep. ''C. arenarium'' occurs on the coasts of France and the North Sea.

''Corophium multisetosum''

''C. multisetosum'' may grow to 9 mm and builds mud burrows in clay or sand in fresh or weakly brackish habitats. It occurs on the coasts of the Netherlands, France, Germany, Poland and the British Isles.

''Corophium volutator''

''C. volutator'' inhabits the upper layers of

sand Sand is a granular material composed of finely divided mineral particles. Sand has various compositions but is defined by its grain size. Sand grains are smaller than gravel and coarser than silt. Sand can also refer to a soil texture, textur ...

on the coasts of the

Netherlands ) , anthem = ( en, "William of Nassau") , image_map = , map_caption = , subdivision_type = Sovereign state , subdivision_name = Kingdom of the Netherlands , established_title = Before independence , established_date = Spanish Netherl ...

Germany Germany, officially the Federal Republic of Germany (FRG),, is a country in Central Europe. It is the most populous member state of the European Union. Germany lies between the Baltic and North Sea to the north and the Alps to the sou ...

, the

United Kingdom The United Kingdom of Great Britain and Northern Ireland, commonly known as the United Kingdom (UK) or Britain, is a country in Europe, off the north-western coast of the European mainland, continental mainland. It comprises England, Scotlan ...

and

France France (), officially the French Republic ( ), is a country primarily located in Western Europe. It also comprises of overseas regions and territories in the Americas and the Atlantic, Pacific and Indian Oceans. Its metropolitan ar ...

, as well as in the

Bay of Fundy The Bay of Fundy (french: Baie de Fundy) is a bay between the Canadian provinces of New Brunswick and Nova Scotia, with a small portion touching the U.S. state of Maine. It is an arm of the Gulf of Maine. Its extremely high tidal range is th ...

New Brunswick New Brunswick (french: Nouveau-Brunswick, , locally ) is one of the thirteen Provinces and territories of Canada, provinces and territories of Canada. It is one of the three Maritime Canada, Maritime provinces and one of the four Atlantic Canad ...

Canada Canada is a country in North America. Its ten provinces and three territories extend from the Atlantic Ocean to the Pacific Ocean and northward into the Arctic Ocean, covering over , making it the world's second-largest country by tota ...

. They grow to 10 mm, and can occur in huge quantities: up to 40,000 per square metre have been observed.

References

{{Taxonbar, from=Q3933889 Corophiidea