Warty Crab (Eriphia verrucosa)
Also sometimes known as the Yellow Crab, the wary crab is a species of Eriphiid crab that is known to occur in the Black Sea, Mediterranean Sea, and the eastern Atlantic Ocean from Brittany to Mauritania and the Azores. Warty crabs are encountered among stones and seaweeds in shallow water along rocky coastlines at depths up to 15 meters. They have a wide diet and are known to feed on bivalves, gastropods, hermit crabs, other molluscs, and polychaete worms. It is regarded as one of the only species able to feed on the invasive Rapana venosa.
Image: George Chernilevsky