An adult polar bear (Ursus maritimus) leaping from ice floe to ice floe in the Svalbard Archipelago, Norway, Arctic, Europe

An adult polar bear (Ursus maritimus) traveling from ice floe to ice floe in the Svalbard Archipelago, Norway, Arctic, Europe

Polar bear (Ursus Maritimus) on Axel Heiberg island, Nunavut, Canadian Arctic, Canada, North America

Resolute, Inuit hamlet, Cornwallis island, Nunavut, Canadian Arctic, Canada, North America

A lone adult emperor penguin (Aptenodytes forsteri) on sea ice in the Gullet between Adelaide Island and the Antarctic Peninsula, Antarctica, Polar Regions

Adult male leopard seal (Hydrurga leptonyx) hauled out on ice in the Gullet near the Antarctic Peninsula, Antarctica, Polar Regions

Chinstrap penguin (Pygoscelis antarctica) molting at Baily Head on Deception Island, Antarctica, Southern Ocean, Polar Regions

Gentoo penguin (Pygoscelis papua) chicks at Jougla Point, Wiencke Island, Antarctica, Southern Ocean, Polar Regions

Gentoo penguin (Pygoscelis papua) chicks covered with mud and guano on Cuverville Island, Antarctica, Southern Ocean, Polar Regions

Gentoo penguins (Pygoscelis papua) nesting colony almost buried by snow during snow storm at Brown Bluff, Antarctica, Polar Regions

Adelie penguins (Pygoscelis adeliae), in snow storm at breeding colony at Brown Bluff, Antarctic Peninsula, Antarctica, Polar Regions