Steven Kazlowski / Polar bear (Ursus maritimus) mother with cub, newly emerged from their den on the Arctic coast, eastern Arctic National Wildlife Refuge, Alaska
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Eric Baccega / Polar Bear (Ursus maritimus) mother with her 3-month cub, soon after emerging from their hibernation den. Wapusk National Park, Manitoba, Canada, March.
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Eric Baccega / Polar Bear (Ursus maritimus) mother resting while her 3-month cubs play. Wapusk National Park, Manitoba, Canada, March.
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Andy Rouse / Polar Bear (Ursus maritimus) mother and two cubs playing around iceberg. Svalbard, Norway, Europe, February.
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Andy Rouse / Two Polar Bear (Ursus maritimus) new year cubs (6 months). Svalbard, Norway, Europe, February.
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Eric Baccega / Polar bear (Ursus maritimus) female and her two cubs on large iceberg off Baffin Island. Nunavut, Canada, August 2010
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Eric Baccega / Polar bear (Ursus maritimus) female and her two cubs on large iceberg off Baffin Island. Nunavut, Canada, August 2010
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Eric Baccega / Polar bear (Ursus maritimus) female and her two cubs on an iceberg, off Baffin Island. Nunavut, Canada, August 2010
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Steven Kazlowski / Two Polar bear (Ursus maritimus) newborn cubs playing outside their den, mouth of Canning River along the Arctic coast, eastern Arctic National Wildlife Refuge, Alaska
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Bryan and Cherry Alexander / Polar bear (Ursus maritimus) mother and cubs with Parhelion / sun dogs over sea ice. Churchill, Manitoba, Canada.
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Steven Kazlowski / Portrait of Polar bear (Ursus maritimus) sow standing with her cub on the snow in late winter, Arctic coast of Alaska
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Steven Kazlowski / Polar bear (Ursus maritimus) sow standing with her cub outside their den in late winter, Arctic coast of Alaska
