Red-legged Swimming Crab, Portunus convexus, Djibouti, Djibuti, Africa, Afar Triangle, Gulf of Aden, Gulf of Tadjourah

behavior tropical water crustacea crabs crustacean adult animals other animals saltwater single animal red legged swimming crab night dive nightdive marine wildlife sea nature blue travel underwater animal symbol photo dive water under photo picture ocean scuba diving picture animal