Unlike other crustaceans, the hermit crab’s carapace only protects its back so it has to squeeze its abdomen into the empty, salvaged shells of gastropods. Dardanus arrosor is the largest of the Mediterranean species. It has two powerful claws. The left one is much larger than the right. Its carapace is bright red or orange and it has blue eyes on red and white striped stalks. It lives on loose and rocky bottoms down to 100m and feeds on organic waste. Hermit crabs are found in the Mediterranean and also in the Atlantic from the Bay of Biscay to South Africa.
Scientific name: Dardanus arrosor
French: Bernard l’ermite
Italian: Paguro rugoso