JOHN DEVRIES / SCIENCE PHOTO LIBRARY JOHN DEVRIES / SCIENCE PHOTO LIBRARY
Male grey seal (Halichoerus grypus) on a beach. A male (bull) seal may be aggressive at times, especially during the breeding season when it fights for mating rights over the female. The grey seal lives in large groups in coastal waters in the North Atlantic Ocean. It feeds almost exclusively on fish. Photographed in Lincolnshire, UK, in November.
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