JOHN DEVRIES / SCIENCE PHOTO LIBRARY JOHN DEVRIES / SCIENCE PHOTO LIBRARY
Grey seals (Halichoerus grypus), female (left) and male (right). The grey seal gives birth to a single pup after a gestation of just under a year. A pup is nursed for up to two months before becoming independent. The grey seal lives in large groups in coastal waters in the North Atlantic Ocean. It feeds almost exclusively on fish. Photographed in November, in Lincolnshire, UK.
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