Doug Allan / Polar bear (Ursus maritimus) male well fed, jumping over a crack in the melting pack ice before sniffing and tasting the air, Svalbard, July, 2015.
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Steven Kazlowski / Polar bear (Ursus maritimus) small cubs walking on pack ice, off 1002 coastal plain of Arctic National Wildlife Refuge, Alaska, USA. October.
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Steven Kazlowski / Polar bear (Ursus maritimus) sow with cub resting on newly formed pack ice, off 1002 coastal plain of Arctic National Wildlife Refuge, Alaska, USA. October.
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Steven Kazlowski / Polar bear (Ursus maritimus) sow with cubs travelling along barrier island, off 1002 coastal plain of Arctic National Wildlife Refuge, Alaska, USA. September.
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Steven Kazlowski / Polar bear (Ursus maritimus) cub walking across snow covered pack ice, off 1002 coastal plain of Arctic National Wildlife Refuge, Alaska, USA. October.
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Steven Kazlowski / Polar bear (Ursus maritimus) sow with cub walking across newly formed pack ice, off 1002 coastal plain of Arctic National Wildlife Refuge, Alaska, USA. October.
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Steven Kazlowski / Polar bear (Ursus maritimus) cub walking across newly formed pack ice, off 1002 coastal plain of Arctic National Wildlife Refuge, Alaska, USA. October.
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Steven Kazlowski / Polar bear (Ursus maritimus) cubs standing and playing with one another, 1002 coastal plain of Arctic National Wildlife Refuge, Alaska, USA. October.
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Ole Jorgen Liodden / Polar bear (Ursus maritimus) on drifting ice floe. Svalbard, Norway.
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Pascal Kobeh / Diver under the ice pack not far from the entrance and exit hole through which we can see the security support person, Russia. White Sea. Model released.
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Danny Green / Polar bear (Ursus maritimus) cub ready to jump down from pack ice. Svalbard, Norway, April.
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Fred Olivier / Polar bear (Ursus maritimus) walking on melting pack ice, Svalbard, Norway.
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Andy Rouse / Polar bear (Ursus maritimus) mother and yearling cub on pack ice at sunset, Svalbard, Norway. August.
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Sven Zacek / Bearded seal (Erignathus barbatus) sunbathing on iceberg broken off from glacier. Kongsfjorden fjord, Spitsbergen, Norway. June 2014.
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Andy Rouse / Polar bear (Ursus maritimus) standing on pack ice at the water's edge, Svalbard, Norway. June.
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Ingo Arndt / Polar Bear (Ursus maritimus) on icefield with moon in late winter, Svalbard, Spitsbergen, Norway, April
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Klein & Hubert / Polar bear (Ursus maritimus) pair playing, with male on pack ice and female in water, Svalbard, Norway, July.
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Wim van den Heever / White tailed sea eagle (Haliaeetus albicilla) feeding on fish on pack ice, Hokkaido, Japan, February.
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Wim van den Heever / White tailed sea eagle (Haliaeetus albicilla) in flight landing, Hokkaido, Japan, February.
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Wim van den Heever / Steller's sea-eagle (Haliaeetus pelagicus) standing on pack ice, Hokkaido, Japan, February.
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Wim van den Heever / Steller's sea-eagle (Haliaeetus pelagicus) landing on pack ice, Hokkaido, Japan, February.
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Ole Jorgen Liodden / Polar bear (Ursus maritimus) standing on ice floe, looking at camera. Svalbard, Norway. August.
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Ole Jorgen Liodden / Polar bear (Ursus maritimus) walking across vast ice floe, Spitsbergen, Svalbard, July 2013.
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Klein & Hubert / Three Emperor penguin (Aptenodytes forsteri) chicks walking on pack ice in front of blue iceberg, Antarctica
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Klein & Hubert / Three Emperor penguin (Aptenodytes forsteri) walking in line on pack ice in front of blue iceberg, Antarctica
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Klein & Hubert / Two Emperor penguin (Aptenodytes forsteri) on pack ice, Antarctica
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Klein & Hubert / Three Emperor penguin (Aptenodytes forsteri) sliding on pack ice, Antarctica
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Klein & Hubert / Emperor penguin (Aptenodytes fosteri) chick walking on pack ice, Antarctica.
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Klein & Hubert / Emperor penguins (Aptenodytes fosteri) and chicks on pack ice, Antarctica
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Steven Kazlowski / Polar bear (Ursus maritimus) curious young bear approaching camera, over newly forming pack ice during autumn freeze up, Beaufort Sea, off Arctic coast, Alaska
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Steven Kazlowski / Polar bear (Ursus maritimus) curious young bear approaches over newly forming pack ice during autumn freeze up, Beaufort Sea, off Arctic coast, Alaska
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Steven Kazlowski / Polar bear (Ursus maritimus) young bear rolling around in the snow, on newly formed pack ice during autumn freeze up, Beaufort Sea, off Arctic coast, Alaska
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Steven Kazlowski / Polar bear (Ursus maritimus) juvenile crossing over newly forming pack ice, during autumn freeze up, Beaufort Sea, off Arctic coast, Alaska
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Ben Cranke / Steller's Sea Eagle (Haliaeetus pelagicus) stood on ice floe, Hokkaido, Japan. February.
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Fred Olivier / View of icebergs and pack ice at sunset, seen from a moving boat, Antarctica.
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Fred Olivier / View of Adelie penguins (Pygoscelis adeliae) swimming underwater, Antarctica.
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Fred Olivier / Group of Adelie penguins (Pygoscelis adeliae) diving from the edge of the sea ice, Antarctica.
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Fred Olivier / Group of Adelie penguins (Pygoscelis adeliae) walking away from the camera on sea ice at sunset, with one solitary penguin in the foreground, Antarctica.
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Fred Olivier / Group of Adelie penguins (Pygoscelis adeliae) running and gathered on sea ice, Antarctica.
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Fred Olivier / Adelie penguin (Pygoscelis adeliae) colony, with icebergs and pack ice in the background, Antarctica.
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Ingo Arndt / Harp seal (Phoca groenlandicus) pup on sea ice looking down into icy water, Magdalen Islands, Gulf of St Lawrence, Quebec, Canada, March.
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Ingo Arndt / Harp seal (Phoca groenlandicus) pup sleeping on sea ice, Magdalen Islands, Gulf of St Lawrence, Quebec, Canada, March.
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Steven Kazlowski / Polar bear (Ursus maritimus) curious young boar on the newly frozen pack ice reaches for remote camera with paw, Beaufort Sea, off the 1002 area of the Arctic National Wildlife Refuge, North Slope, Al...
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Steven Kazlowski / Polar bear (Ursus maritimus) curious young male on the newly frozen pack ice, Beaufort Sea, off the 1002 area of the Arctic National Wildlife Refuge, North Slope, Alaska
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Steven Kazlowski,Steven Kazlowski / Polar bear (Ursus maritimus) juvenile spreading body weight over thin newly forming pack ice, trying not to break through, Beaufort Sea, off the 1002 area of the Arctic National Wildlife Refuge, North...
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Steven Kazlowski / Polar bear (Ursus maritimus) 3-year-olds play fighting on newly formed pack ice, Beaufort Sea, off the 1002 area of the Arctic National Wildlife Refuge, North Slope, Alaska
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Steven Kazlowski,Steven Kazlowski / Polar bear (Ursus maritimus) juvenile rolling around on newly formed pack ice, Beaufort Sea, off the 1002 area of the Arctic National Wildlife Refuge, North Slope, Alaska
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Steven Kazlowski,Steven Kazlowski / Polar bear (Ursus maritimus) young bear in freezing water during autumn freeze up, Bernard Spit, 1002 area of the Arctic National Wildlife Refuge, North Slope, Alaska, Beaufort Sea
