Leucistic caused by lack of melanin, or blond Antarctic fur seal pup (Arctocephalus gazella) on South Georgia, Polar Regions

Adult female leopard seal (Hydrurga leptonyx) hauled out on an ice floe in Kayak Cove on Brabant Island, Antarctica, Polar Regions

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

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

Antarctic tern (Sterna vittata), feeding in the Enterprise Islands, Antarctica, Southern Ocean, Polar Regions

Adult male Antarctic fur seals (Arctocephalus gazella) hauled out on ice near Brown Bluff, Antarctica, Polar Regions

The Lindblad Expedition ship National Geographic Explorer in Dahlman Bay in late evening light as the waxing moon rises on the west side of the Antarctic Peninsula in Antarctica.

The Lindblad Expedition ship National Geographic Explorer in Dahlman Bay in late evening light as the waxing moon rises on the west side of the Antarctic Peninsula in Antarctica.