DUNCAN SHAW / SCIENCE PHOTO LIBRARY DUNCAN SHAW / SCIENCE PHOTO LIBRARY
Grey seal pup (Halichoerus grypus) lying on mudflats. The grey seal gives birth to a single pup after a gestation of just under a year. A pup nurses 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 December in Donna Nook, Humber estuary, Lincolnshire.
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