Yva Momatiuk & John Eastcott / Northern Fur Seal (Callorhinus ursinus) young male body-surfing in shallow water near bachelor haul-out beach, summer, St Paul Island, Pribilof Islands, Alaska

Yva Momatiuk & John Eastcott / Northern Fur Seal (Callorhinus ursinus) female sleeping in rookery, summer season, St Paul Island, Pribilof Islands, Alaska

Yva Momatiuk & John Eastcott / Northern Fur Seal (Callorhinus ursinus) bull on haul out beach in summer, Saint George Island, Pribilof Islands, Alaska

Yva Momatiuk & John Eastcott / Northern Fur Seal (Callorhinus ursinus) sub-adult and non-territorial bulls resting on haul out beach in summer, St Paul Island, Pribilof Islands, Alaska