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Calliapagurops charcoti

Calliapagurops charcoti is a species of mud shrimp from Macaronesia. It is the only mud shrimp known from Madeira, and is the only species of mud shrimp thought to be a filter feeder.


Callinectes bocourti

Callinectes bocourti is a species of swimming crab. Its native range extends from Jamaica and Belize south to Brazil, but it has been found as a nonindigenous species as far north as North Carolina. This crab has a light brown shell with red spot ...


Callinectes danae

Callinectes danae is a species of swimming crab. The carapace is olive-brown and up to 5.8 cm long, the walking legs are blue. The species is common in Brazil and the West Indies.


Callinectes exasperatus

Callinectes exasperatus is a species of swimming crab. They can be found in the western Atlantic Ocean. The diet of this species is carrion. They are not commercially fished.


Callinectes marginatus

Its carapace bears nine spines behind each eye, the last of which is around twice the length of the previous one, making the whole carapace around 10 centimetres 3.9 in wide.


Callinectes rathbunae

Callinectes rathbunae is a species of swimming crab. It occurs in warm coastal waters of Mexico. The species is not used as food, but is kept in laboratories for research. Young crabs can range from 17–64 millimetres in size. The specific epithet ...


Calyptraeotheres garthi

Calyptraeotheres garthi is a species of pea crab in the family Pinnotheridae. It is found in the southwestern Atlantic Ocean and is a parasitic castrator of the slipper limpet Crepidula cachimilla.



Carcinus is a genus of crabs, which includes Carcinus maenas, an important invasive species, and C. aestuarii, a species endemic to the Mediterranean Sea.


Carcinus aestuarii

Carcinus aestuarii is a littoral crab, native to the Mediterranean Sea. Carcinus aestuarii has some similarities to Carcinus maenas and is sometimes considered a subspecies of the contract, not a species in its own right, but also molecular biolo ...


Carcinus maenas

Carcinus maenas is a common littoral crab. It is known by different names around the world. In the British Isles, it is generally referred to as the shore crab, or green shore crab. In North America and South Africa, it bears the name green crab ...


Chaceon atopus

Chaceon atopus is a species of crab. This species resembles C. gordonae, from the Cape Verde Islands and Sierra Leone, in many features: its large size, well-developed frontal and anterolateral teeth on the carapace, and the compressed dactyli of ...


Chelicorophium curvispinum

Chelicorophium curvispinum is a species of amphipod crustacean. It lives in salt, brackish and fresh water, and may reach 6 millimetres in length. It occurs in the Caspian Sea, the Black Sea and adjoining rivers, and in river systems emptying int ...


Chiridotea coeca

Adult sand isopods are horizontally flattened. The thorax is almost round from above and the long, robust legs with large setae. The abdomen is short and pointed. Sand isopods reach 15 mm 0.59 in long and 7 mm 0.28 in wide. They use the last pair ...


Chthamalus montagui

Chthamalus montagui, common name Montagus stellate barnacle, is a species of acorn barnacle common on rocky shores in South West England, Ireland, and Southern Europe. Vertical distribution of C. montagui Chthamalus stellatus intersects with a pa ...


Chthamalus stellatus

Chthamalus stellatus, common name Polis stellate barnacle, is a species of acorn barnacle common on rocky shores in South West England, Ireland, and Southern Europe. It is named after Giuseppe Saverio Poli.


Clibanarius tricolor

Clibanarius tricolor is a hermit crab that lives in shallow water of the Caribbean Sea and is popular in the home aquarium trade. Its common names include blue-legged hermit crab, tricolor hermit crab, blueleg reef hermit crab, equal handed hermi ...


Corophium volutator

Corophium volutator is a species of amphipod crustacean in the family Corophiidae. It is found in mudflats of the northern Atlantic Ocean. It is native to the north-east Atlantic Ocean, and has been introduced to the north-west Atlantic.


Crangon septemspinosa

Crangon septemspinosa is a species of shrimp, one of several known as the sand shrimp. It lives along the Atlantic coast of North America, from Newfoundland to Florida, at depths to 450 m.


Crassicorophium crassicorne

Crassicorophium crassicorne is a species of amphipod crustacean. It lives in shallow subtidal muddy sand and may grow up to 5 millimetres long. C. crassicorne occurs on American and European coasts from Norway to the Black Sea.


Diastylis laevis

Diastylis laevis is a species of crustacean belonging to the order Cumacea and the genus Diastylis. It occurs from Skagerrak to the Cote dIvoire, but not in the Mediterranean Sea. It grows up to 11 millimetres long.


Dyspanopeus sayi

Dyspanopeus sayi is a species of mud crab that is native to the Atlantic coast of North America. It has also become established outside its native range, living in Swansea Docks since 1960, the Mediterranean Sea since the 1970s, the North Sea sin ...


Ebalia tumefacta

Ebalia tumefacta is a small, roughly diamond-shaped crab, with noticeably bulbous branchial regions. The carapace is wider than it is long, and has minute bumps, giving it a somewhat rough texture. It grows to about 12 millimetres 0.47 in long an ...


Eumunida picta

Eumunida picta is a species of squat lobster found in the deep sea. The species is strongly associated with reefs of Lophelia pertusa, a deep-water coral, and with methane seeps. It is abundant in the western Atlantic Ocean, where it is found fro ...



Eunephrops is a genus of lobsters, containing four species, all found in the Western Atlantic Ocean: Eunephrops manningi Holthuis, 1974. Eunephrops bairdii Smith, 1885. Eunephrops luckhursti Manning, 1997. Eunephrops cadenasi Chace, 1939.


Eurydice pulchra

Eurydice pulchra, the speckled sea louse, is a species of isopod crustacean found in the northeast Atlantic Ocean. The generic name for the nymph Eurydice from Greek mythology, the species name means "beautiful" in Latin. Series range extends fro ...


Eurypanopeus depressus

Eurypanopeus depressus, the flatback mud crab or depressed mud crab, is a true crab belonging to the infraorder Brachyura and the family Panopeidae. It is native to the western Atlantic Ocean and is often found in estuaries and lagoons, commonly ...


Farfantepenaeus duorarum

Farfantepenaeus duorarum is a species of marine penaeid shrimp found around Bermuda, along the east coast of the United States and in the Gulf of Mexico. They are a significant commercial species in the United States and Cuba.


Farfantepenaeus notialis

It is found off the east coast of South America from Yucatan, Mexico to Rio de Janeiro, Brazil, and the west coast of Africa, from Mauritania to Angola. They live at depths of 3–50 metres 10–164 ft, or exceptionally up to 700 m 2.300 ft, on sandy ...


Galathea intermedia

Galathea intermedia is a species of squat lobster found in the north-eastern Atlantic Ocean, as far north as Troms, Norway, south to Dakar and the Mediterranean Sea. G. InterMedia is the smallest species of the squat lobster in the North sea, wit ...


Galathea squamifera

Galathea squamifera, the black squat lobster, or Montagus plated lobster, is a species of squat lobster that lives in the north-east Atlantic Ocean and Mediterranean Sea.


Gammarus chevreuxi

Gammarus chevreuxi is a species of crustacean in the family Gammaridae. It was first described by Elsie Wilkins Sexton in 1913. The organism is very similar to Gammarus locusta, but there are certain constant characters which set it apart, for ex ...


Gaussia princeps (copepod)

Gaussia princeps is a mesopelagic copepod found in temperate and tropical waters worldwide. They have been known to display bioluminescence. Gaussia Princeps is used in the production of luciferase.



Gemmotheres also known as the jewel-box pea crab, is a monotypic genus of pea crab, which was erected in 1996 to hold the species Gemmotheres chamae. The species lives as a commensal of the corrugate jewelbox, Chama congregata.


Geryon trispinosus

Geryon trispinosus is a small crab, reaching a carapace length of up to 40 millimetres 1.6 in. The carapace is roughly hexagonal in shape, and reddish brown in colour. It is broader than it is long, with three conspicuous teeth on either side at ...


Goneplax rhomboides

Goneplax rhomboides is a species of crab. It is known by the common name angular crab because of its angular carapace. Although it is also called the square crab, its shell is in fact more trapezoidal than square. This species is also known as th ...


Hamaticolax unisagittatus

Hamaticolax unisagittatus is a species of parasitic copepod belonging to the family Bomolochidae. It is a parasite on the gills of the common snook and has only been recorded in coastal waters off Rio de Janeiro State. In one study over half of t ...


Herbstia condyliata

The Herbstia Condyliata is a very widespread organism and can be found in a variety of places such as: The entire Mediterranean Sea and the western Atlantic from the North of the Gulf of Guinea to the Cantabrian sea. It may also be found in the C ...



Homarus is a genus of lobsters, which include the common and commercially significant species Homarus americanus and Homarus gammarus. The Cape lobster, which was formerly in this genus as H. capensis, was moved in 1995 to the new genus Homarinus.


Homola barbata

They usually have squarish carapaces with forward-pointing spines along the upper front edges. The animals chelipeds are shorter than their other legs the back pair are short, thin and doubled back on themselves. The animals carapace grows to 2 i ...



Hutchinsoniella macracantha is a species of crustacean known as a horseshoe shrimp. It is the only species in the genus Hutchinsoniella and was first described in 1955 by Howard L. Sanders, having been discovered in Long Island Sound, they were t ...


Idotea balthica

Idotea balthica has a broad geographical distribution, having been recorded from the Belgian Exclusive Economic Zone, The British Isles, Cobscook Bay, Dutch Exclusive Economic Zone, European waters, Greek Exclusive Economic Zone, Gulf of Maine, K ...


Idotea linearis

Idotea linearis is a narrow organism, up to seven times longer than wide. Males tend to be larger than females, and can reach 40 millimetres 1.6 in length.


Inachus phalangium

Inachus phalangium, Leachs spider crab, is a species of crabs from the north-eastern Atlantic Ocean and Mediterranean Sea. It is up to 20.5 mm wide, and is very similar to other species in the genus Inachus.


Iphinoe trispinosa

I. trispinosa is a slender cumacean which grows up to 10 mm long. The carapace is approximately twice as long as it is high, and in the male, which has a rounded pseudorostrum, rather smooth. The female has two to six small serrations in the midd ...


Jassa marmorata

Jassa marmorata is a species of tube-building amphipod. It is native to the northeast Atlantic Ocean but has been introduced into northeast Asia. J. marmorata are greyish in colour with reddish brown markings. The can grow to a length of up to 10 ...


Johngarthia weileri

Gecarcinus weileri was described by Alexander Sendler in 1912, but was treated for a long time as a synonym of G. lagostoma. The two were separated by Michael Turkay in 1973, and placed in the subgenus Johngarthia, which was raised to the rank of ...


Leucothoe incisa

Leucothoe incisa is an amphipod in the family Leucothoidae. It grows up to 7 millimetres long, and is whitish in colour, but a yellowish green along the back, with intensely red eyes. It lives at depths of up to 60 metres along the Atlantic coast ...


Libinia ferreirae

Libinia ferreirae is a species of tropical spider crab in the family Epialtidae. It is found on the seabed in shallow waters off the Atlantic coast of South America.


Ligia oceanica

Ligia oceanica, the sea slater, common sea slater or sea roach, is a littoral woodlouse. L. oceanica is oval, twice as long as broad and may reach up to 30 mm 1.2 in length, making it one of the largest oniscid isopods. Its color can vary from gr ...



Liocarcinus is a genus of crabs, which includes the flying crab, the vernal crab and several other swimming crabs. It includes 12 species: Liocarcinus depurator Linnaeus, 1758 – blue-leg swimming crab, harbour crab, sandy swimming crab. Liocarcin ...

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