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 winter nature reserve north sea lincolnshire animal wildlife coastal shore resting marine mammal habitat young colony tranquility environment natural setting conservation breeding behavior seaside sandy beach mammals life ecological soft fur nurturing observation watching british sanctuary coast welfare baby ecosystem aquatic growth fauna species protection reproduction