Carcinus maenas (Linnaeus, 1758)
Green crab
photo by Harvey-Clark, Chris

Family:  Carcinidae ()
Max. size:  6 cm CL (male/unsexed); max. reported age: 7 years
Environment:  benthic; brackish; marine; depth range 0 - 200 m
Distribution:  Eastern Atlantic: From Great Britain north to Iceland, the North Sea and Norway, south to Portugal and Spain to Mauritania. Introduced and established in North America, South Africa (Cape Town), and Australia. Introduced but not established in Panama, Brazil, Pakistan, Sri Lanka, Madagascar, Myanmar, Japan and Hawaii. Subtropical to polar.
Diagnosis:   
Biology:  Usually found in eelgrass beds (Ref. 128717). Maximum carapace width: 7.7 cm; commonly 5 cm wide. Inhabits shallow water from the intertidal area down to 200 m. Lives under stones, on muddy or muddy sand bottoms, or hard bottom, etc. Also inhabits brackish lagoons (Ref. 2779), and eelgrass beds (Ref. 128717).
IUCN Red List Status: Not Evaluated (N.E.) Ref. 123251)
Threat to humans: 
Country info:   
 

Source and more info: www.sealifebase.org. For personal, classroom, and other internal use only. Not for publication.