Skull of an adult female leopard seal (Hydrurga leptonyx), on display at the Natural History Museum in Stanley, Falkland Islands, South America

Southern elephant seal (Mirounga leonina) challenger bull head detail (notice shredded proboscis) at Gold Harbour, South Georgia, Polar Regions

Adult bull southern elephant seal (Mirounga leonina) flipping sand onto its back to cool off on South Georgia Island, Southern Ocean

Bull southern elephant seal (Mirounga leonina) on South Georgia Island, Southern Ocean

Bull southern elephant seal (Mirounga leonina) on South Georgia Island, Southern Ocean

Bull southern elephant seal (Mirounga leonina) on South Georgia Island, Southern Ocean

Bull southern elephant seal (Mirounga leonina) on South Georgia Island, Southern Ocean

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.

Southern Elephant seal (Mirounga leonina) female and pup on snow, King penguins behind, Salisbury Plains, South Georgia Island, Antarctic, Polar Regions

Adult Antarctic fur seal (Arctocephalus gazella), in Ocean Harbor on South Georgia Island, Southern Ocean, Polar Regions

Antarctic fur seal bull (Arctocephalus gazella) on South Georgia, Southern Ocean, Polar Regions

Beachmaster bull southern elephant seal (Mirounga leonina) attempting to mate at Peggotty Bluff, South Georgia, Polar Regions

Young challenger bull southern elephant seal (Mirounga leonina) fleeing from beachmaster bull, South Georgia Island, Polar Regions

Adult male Antarctic fur seal (Arctocephalus gazella) head detail, Antarctica, Southern Ocean, Polar Regions

Adult female leopard seal (Hydrurga leptonyx) hauled out on ice at Brown Bluff near the Antarctic Peninsula, Antarctica, Polar Regions

Southern Elephant seal (Mirounga leonina), King Penguins (Aptenodytes patagonicus) on snow, Salisbury Plain, South Georgia Island, Antarctic, Polar Regions

An Atlantic puffin looks out from its rock outcropping., Machias Seal Island, Maine.

An Atlantic puffin standing on a rock by its burrow., Machias Seal Island, Maine.

An Atlantic puffin rests on a rock on a foggy morning., Machias Seal Island, Maine.

A leopard seal, Hydrurga leptonyx, feeding on a gentoo penguin, Petermann Island, Antarctica.