Northern elephant seals (Mirounga angustirostris). The seal in the centre has a large wound due to an attack by a Great White shark (Carcharodon carcharias). Male seals are much larger than the female, and possess an inflatable proboscis on the head. During the breeding season males fight for territories on the beach, which give them access to females. Dominant males may possess harems numbering up to 40 females by the end of the season. Northern elephant seals are found in the North-East Pacific Ocean. They feed on fish and squid, often diving very deep in order to find their prey. Photographed in Isla Guadelupe, Mexico.