Steven Kazlowski / Polar bear (Ursus maritimus) boar resting on newly formed pack ice, near Kaktovik, Barter Island, North Slope, Alaska, USA, October. Vulnerable species.
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Steven Kazlowski / Rear view of Polar bear (Ursus maritimus) boar resting on newly formed pack ice, near Kaktovik, Barter Island, North Slope, Alaska, USA, October. Vulnerable species.
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Steven Kazlowski / Young Polar bear (Ursus maritimus) on newly formed pack ice, near Kaktovik, Barter Island, North Slope, Alaska, USA, October. Vulnerable species.
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Steven Kazlowski / Two young Polar bears (Ursus maritimus) on newly formed pack ice, near Kaktovik, Barter Island, North Slope, Alaska, USA, October. Vulnerable species.
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Pal Hermansen / Antarctic pack ice at dawn, near Snow Hill Island, Antarctica, October 2008.
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Peter Cairns / Polar bear (Ursus maritimus) with paw on face, on ice floe, Svalbard, Norway, August. Vulnerable species.
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Peter Cairns / Polar bear (Ursus maritimus) rolling on ice floe, Svalbard, Norway. August. Vulnerable species.
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Peter Cairns / Polar bear (Ursus maritimus) rolling in ice floe, Svalbard, Norway, August. Vulnerable species.
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Peter Cairns / RF- Polar bear (Ursus maritimus) on ice floe, Svalbard, Norway, August. Vulnerable species. (This image may be licensed either as rights managed or royalty free.)
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Pal Hermansen / Antarctic ice floe at sunset, near Snow Hill island, Antarctica, October 2008
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Roy Mangersnes / Polar bear (Ursus maritimus) juvenile resting on ice floe, Spitsbergen, Svalbard, Norway, July.
Roy Mangersnes / Ocean ice floes north of Spitsbergen, Svalbard, Norway, July.
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Roy Mangersnes / Ice floes with sun coming through fog, Svalbard, Norway, July.
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Markus Varesvuo / Steller's Eagle (Haliaeteus pelagicus) group on ice floe, Hokkaido, Japan, February
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Ben Cranke / Steller's Sea Eagle (Haliaeetus pelagicus) stood on ice floe, Hokkaido, Japan. February.
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Peter Cairns / Trio of Black-legged kittiwakes (Rissa tridactyla) on ice floe, Svalbard, Norway, August.
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Colin Monteath / Caribou (Rangifer tarandus) caravan with Tsataan riders leaving winter camp, Hunkher Mountains, Mongolia
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Colin Monteath / Caribou (Rangifer tarandus) and Tsataan herders at winter camp, Hunkher Mountains, Mongolia
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Colin Monteath / Caribou (Rangifer tarandus) caravan being led by Tsataan herder during spring round up, Hunkher Mountains, Mongolia
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Colin Monteath / Caribou (Rangifer tarandus) being ridden by Tsataan people during spring round up, Hunkher Mountains, Mongolia
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Peter Cairns / Polar bear (Ursos maritimus) rolling in the snow on ice floe, Svalbard, Norway, August.
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Peter Cairns / RF- Polar bear (Ursus maritimus) on ice floe, Svalbard, Norway, August. (This image may be licensed either as rights managed or royalty free.)
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Laurent Geslin / Blizzard on the ice pack of Manitoba with panhelion sun effects (sun dog) on the horizon. Northern Canada
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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) yearling 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 / Polar bear (Ursus maritimus) yearling 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 / Polar bear (Ursus maritimus) yearling 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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Florian Möllers / Wolf (Canis lupus) pack running in deep snow, captive in enclosure of the Bavarian Forest National Park, Germany, February
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Steven Kazlowski / Polar bear (Ursus maritimus) adult stands on the snow-covered pack ice to get a better look at something in the distance, 1002 area of the Arctic National Wildlife Refuge, North Slope, Alaska, USA
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Steven Kazlowski / Polar bear (Ursus maritimus) pair of adults rest and stay cool on the newly formed pack ice in autumn, 1002 area of the Arctic National Wildlife Refuge, North Slope, Alaska, USA
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Steven Kazlowski / Polar bear (Ursus maritimus) sow on newly formed pack ice with spring cub playing in the water, 1002 area of the Arctic National Wildlife Refuge, North Slope, Alaska, USA
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Steven Kazlowski / Polar bear (Ursus maritimus) adult resting and staying cool on the newly formed pack ice in autumn, 1002 area of the Arctic National Wildlife Refuge, North Slope, Alaska, USA
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Steven Kazlowski / Polar bear (Ursus maritimus) sow on newly formed pack ice with spring cub playing in the water, 1002 area of the Arctic National Wildlife Refuge, North Slope, Alaska, USA
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Steven Kazlowski / Polar bear (Ursus maritimus) female practises breaking a hole in the pack ice, in the 1002 coastal plain of the Arctic National Wildlife Refuge, Alaska, USA
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Steven Kazlowski / Polar bear (Ursus maritimus) female practises breaking a hole in the pack ice, in the 1002 coastal plain of the Arctic National Wildlife Refuge, Alaska, USA
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Steven Kazlowski / Man wearing traditional polar bearskin gloves stands on pack ice over the Chukchi Sea. Offshore from Barrow, Arctic coast of Alaska, spring, May 2012.
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Steven Kazlowski / Silhouette of Inupiaq subsistence whalers at the edge of an open lead in the pack ice, looking for passing bowhead whales as the mid-day sun follows the horizon. Chukchi Sea, offshore from Barrow, Arc...
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Steven Kazlowski / Silhouette of Inupiaq subsistence whalers at the edge of an open lead in the pack ice, looking for passing bowhead whales as the mid-day sun follows the horizon. Chukchi Sea, offshore from Barrow, Arc...
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Steven Kazlowski / Inupiaq subsistence whaler stands on jumbled ice at the edge of an open lead in the pack ice to look for passing bowhead whales, during spring whaling season. Chukchi Sea, offshore from Barrow, Arctic...
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Steven Kazlowski / Inupiaq subsistence whalers try to catch a bowhead whale (Balaena mysticetus) from their umiak in an open lead in the pack ice. Chukchi Sea, offshore from Barrow, Arctic coast of Alaska, April 2012.
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Steven Kazlowski / Inupiaq subsistence whalers prepare to pull up a bowhead whale (Balaena mysticetus) catch along the edge of the open lead in the pack ice. Chukchi Sea, offshore from Barrow, Arctic coast of Alaska, Ap...
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Steven Kazlowski / Inupiaq subsistence whalers break open a hole in the pack ice using a harpoon along the edge of an open lead, during spring whaling season, Chukchi Sea, offshore from Barrow, Arctic coast of Alaska
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Steven Kazlowski / Inupiaq subsistence whaler stands on jumbled ice at the edge of an open lead in the pack ice to look for passing bowhead whales, during spring whaling season. Chukchi Sea, offshore from Barrow, Arctic...
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Steven Kazlowski / Inupiaq subsistence whalers bring their umiak - bearded seal skin boat - back onto the edge of an open lead in the pack ice, during spring whaling season. Chukchi Sea, offshore from Barrow, Arctic coa...
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Steven Kazlowski / Inupiaq subsistence whalers in their umiak - bearded seal skin boat - watch a polar bear (Ursus maritimus) sow and cub travel along the edge of the open lead in the pack ice, during spring whaling sea...
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Steven Kazlowski / Inupiaq subsistence whaler at the front of an umiak - or bearded seal skin boat - spots a whale from the edge of an open lead in the pack ice during spring whaling season. Chukchi Sea, offshore from B...
01404949
Steven Kazlowski / Inupiaq subsistence whalers with an umiak - a bearded seal skin boat - wait at the edge of an open lead in the pack ice and look for whales. Chukchi Sea, offshore from Barrow, Arctic coast of Alaska,...
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Andy Rouse / Polar bear (Ursus maritimus) on pack ice, Svalbard, Arctic
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Andy Rouse / Polar bear (Ursus maritimus) resting on pack ice, Svalbard, Arctic
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Andy Rouse / RF- Polar bear (Ursus maritimus) on pack ice. Svalbard, Arctic. Endangered species. (This image may be licensed either as rights managed or royalty free.)
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Andy Rouse / Polar bear (Ursus maritimus) on pack ice taken with fisheye lens, Svalbard, Arctic September 2011
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Andy Rouse / Polar bear (Ursus maritimus) on pack ice taken with fisheye lens, Svalbard, Arctic September 2011
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Andy Rouse / Polar bear (Ursus maritimus) on pack ice taken with fisheye lens, Svalbard, Arctic September 2011
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Andy Rouse / Polar bear (Ursus maritimus) on pack ice taken with fisheye lens, Svalbard, Arctic September 2011
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Eric Baccega / Crack in the pack ice, Manson Icefield peninsula and Jakeman glacier, Ellesmere Island, Nunavut, Canada, June 2012
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Steven Kazlowski / Polar bear (Ursus maritimus) walking on newly formed pack ice, 1002 area of the Arctic National Wildlife Refuge, North Slope of the Brooks Range, Alaska, October 2011
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Tui De Roy / Ross Seal (Ommatophoca rossii) female in defensive posture, Southern Ocean, eastern Antarctica
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Tui De Roy / Ross Seal (Ommatophoca rossii) mother with young pup on pack ice, Southern Ocean, eastern Antarctica
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Tui De Roy / Ross Seal (Ommatophoca rossii) mother displaying with young pup on pack ice, Southern Ocean, eastern Antarctica
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Chadden Hunter / Aerial view of pack of Timber wolves (Canis lupus) after successful Bison (Bison bison) hunt, Arctic circle in Northern Canada. Taken on location for BBC Frozen Planet series, 2009
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Chadden Hunter / Aerial view of hunting pack of Timber wolves (Canis lupus) in Arctic circle in Northern Canada, Taken on location for BBC Frozen Planet series, 2009
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Andy Rouse / Polar Bear (Ursus maritimus) resting on pack ice. Svalbard, Norway, August.
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Steven Kazlowski / Polar bear (Ursus maritimus) broken legged sow with pair of spring cubs rest on newly formed pack ice along the arctic coast, 1002 area of the Arctic National Wildlife Refuge, Alaska, Beaufort Sea, US...
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Steven Kazlowski / Polar bear (Ursus maritimus) pair of spring cubs play on newly formed pack ice along the arctic coast in autum, 1002 area of the Arctic National Wildlife Refuge, Alaska, Beaufort Sea, USA, sequence 2/...
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Steven Kazlowski / Polar bear (Ursus maritimus) sow with spring cubs travel across newly formed pack ice during fall freeze up, off the 1002 area of the Arctic National Wildlife Refuge, Alaska, USA, October
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Steven Kazlowski / Polar bear (Ursus maritimus) pair of spring cubs playfully roll around on newly formed pack ice, off the 1002 coastal area of the Arctic National Wildlife Refuge, Alaska, Beaufort Sea, USA, October
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Steven Kazlowski / Polar bear (Ursus maritimus) pair of spring cubs play fighting on newly formed pack ice, off the 1002 coastal area of the Arctic National Wildlife Refuge, Alaska, Beaufort Sea, USA, October
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Steven Kazlowski / Polar bear (Ursus maritimus) pair of sows, one with a spring cub, greet one another on newly formed pack ice along the arctic coast in autumn, 1002 area of the Arctic National Wildlife Refuge, Alaska,...
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Steven Kazlowski / Polar bear (Ursus maritimus) spring cub playfully rolls around on newly formed pack ice, off the 1002 coastal area of the Arctic National Wildlife Refuge, Alaska, Beaufort Sea, USA, October
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Steven Kazlowski / Polar bear (Ursus maritimus) spring cub playfully rolls around on newly formed pack ice, off the 1002 coastal area of the Arctic National Wildlife Refuge, Alaska, Beaufort Sea, USA, October
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Steven Kazlowski / Polar bear (Ursus maritimus) pair of spring cubs play on newly formed pack ice along the arctic coast in autum, 1002 area of the Arctic National Wildlife Refuge, Alaska, Beaufort Sea, USA, sequence 3/...
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Steven Kazlowski / Polar bear (Ursus maritimus) pair of spring cubs play on newly formed pack ice along the arctic coast in autum, 1002 area of the Arctic National Wildlife Refuge, Alaska, Beaufort Sea, USA, sequence 1/...
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Steven Kazlowski / Polar bear (Ursus maritimus) spring cub playfully rolls around on newly formed pack ice, off the 1002 coastal area of the Arctic National Wildlife Refuge, Alaska, Beaufort Sea, USA, October
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Steven Kazlowski / Polar bear (Ursus maritimus) sow traveling across newly formed pack ice off the 1002 coastal area of the Arctic National Wildlife Refuge, Alaska, Beaufort Sea, USA, October
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Steven Kazlowski / Polar bear (Ursus maritimus) broken legged sow with pair of spring cubs rest on newly formed pack ice along the arctic coast, 1002 area of the Arctic National Wildlife Refuge, Alaska, Beaufort Sea, US...
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Steven Kazlowski / Polar bear (Ursus maritimus) spring cub playfully rolls around on newly formed pack ice, off the 1002 coastal area of the Arctic National Wildlife Refuge, Alaska, Beaufort Sea, USA, October
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Steven Kazlowski / Polar bear (Ursus maritimus) broken legged sow and spring cub rest on newly formed pack ice along the arctic coast in autumn, 1002 area of the Arctic National Wildlife Refuge, Alaska, Beaufort Sea, US...
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Steven Kazlowski / Polar bear (Ursus maritimus) broken legged sow and spring cub rest on newly formed pack ice along the arctic coast in autumn, 1002 area of the Arctic National Wildlife Refuge, Alaska, Beaufort Sea, US...
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Steven Kazlowski / Polar bear (Ursus maritimus) pair of curious spring cubs wade in shallow waters off newly formed pack ice, mother rests behind on ice, Bernard Spit, Alaska, USA, October
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Steven Kazlowski / Polar bear (Ursus maritimus) spring cub playfully rolls around on newly formed pack ice, off the 1002 coastal area of the Arctic National Wildlife Refuge, Alaska, Beaufort Sea, USA, October
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Steven Kazlowski / Polar bear (Ursus maritimus) spring cub resting on newly formed pack ice, off the 1002 area of the Arctic National Wildlife Refuge, Alaska, USA, October
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Steven Kazlowski / Polar bear (Ursus maritimus) spring cub resting on newly formed pack ice, off the 1002 area of the Arctic National Wildlife Refuge, Alaska, USA, October
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Steven Kazlowski / Polar bear (Ursus maritimus) pair of spring cubs sitting next to one another on newly formed pack ice, off the 1002 coastal area of the Arctic National Wildlife Refuge, Alaska, Beaufort Sea, USA, Octo...
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Steven Kazlowski / Polar bear (Ursus maritimus) sow with playful spring cub on newly formed pack ice along the arctic coast in autumn, 1002 area of the Arctic National Wildlife Refuge, Alaska, Beaufort Sea, USA, October
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Steven Kazlowski / Polar bear (Ursus maritimus) spring cub playfully rolls around on newly formed pack ice, off the 1002 coastal area of the Arctic National Wildlife Refuge, Alaska, Beaufort Sea, USA, October
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Steven Kazlowski / Polar bear (Ursus maritimus) pair of spring cubs play on newly formed pack ice along the 1002 coastal area of the Arctic National Wildlife Refuge, Alaska, Beaufort Sea, USA, October
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Bryan and Cherry Alexander / Cape Vincent, Elephant Island seen across 15 nautical miles of pack ice. South Shetland Islands, Antarctica, 2009.
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Bryan and Cherry Alexander / Emperor penguins (Aptenodytes forsteri) picking their way toboganning through pack ice as they return to the Colony, Snow Hill Island, Antarctica, October.
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Bryan and Cherry Alexander / Emperor penguins (Aptenodytes forsteri) picking their way through pack ice as they return to the Colony, Snow Hill Island, Antarctica, October.
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Lassi Rautiainen / Grey wolf (Canis lupus) pack in woodland in winter, Finland, November
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Lassi Rautiainen / Grey wolf (Canis lupus) pack feeding on carcass in thick snow in woodland, two wolves interacting, Finland, November
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Lassi Rautiainen / Grey wolf (Canis lupus) pack feeding on carcass in thick snow in woodland, Finland, November
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Troels Jacobsen/Arcticphoto / Adelie Penguins (Pygoscelis adeliae) walking along ice-shelf above thawed ice in a rough sea. Brown Bluff, Antarctic Peninsula.
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Eric Baccega / Icebergs and melting pack ice, Disko Bay, Greenland
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Andy Rouse / Polar Bear (Ursus maritimus) big male on pack ice. Svalbard, Norway, Europe, February.
