Xantho poressa

Xantho poressa is a species of crab from the Black Sea, Mediterranean Sea and parts of the eastern Atlantic Ocean. It is one of four species in the genus Xantho. Juveniles live in Posidonia meadows until their last moult, at which point they migrate to the nearest rocky substrate. ...
Found on http://en.wikipedia.org/wiki/Xantho_poressa
No exact match found