A young Grey Seal pup (Halichoerus grypus) on the shore in winter, at Donna Nook Nature Reserve, on the North Sea coast of Lincolnshire, Great Britain.

grey seal pup donna nook nature reserve winter north sea lincolnshire wildlife marine mammal resting fur coastal habitat animal behavior young sighting conservation british aquatic baby natural life population creature ecosystem protected area colony observation texture shoreline cute animals outdoor activity nurturing adventure solitary predator prey youngling shore cold