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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...
01431445
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...
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
01431390
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
Polar bear (Ursus maritimus) portrait, female. Bernard Spit, 1002 area of the Arctic National Wildlife Refuge, North Slope, Alaska.
01431378
Steven Kazlowski,Steven Kazlowski / Polar bear (Ursus maritimus) portrait, female. Bernard Spit, 1002 area of the Arctic National Wildlife Refuge, North Slope, Alaska.
Polar bear (Ursus maritimus) curious adult head underwater, Beaufort Sea, off the 1002 area of the Arctic National Wildlife Refuge, North Slope, Alaska.
01431377
Steven Kazlowski,Steven Kazlowski / Polar bear (Ursus maritimus) curious adult head underwater, Beaufort Sea, off the 1002 area of the Arctic National Wildlife Refuge, North Slope, Alaska.
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
01431376
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
Polar bear (Ursus maritimus) 4-5 year-old on pack ice, low angle shot, off the 1002 area of the Arctic National Wildlife Refuge, North Slope of the Brooks Range, Alaska, Beaufort Sea, autumn
01431359
Steven Kazlowski,Steven Kazlowski / Polar bear (Ursus maritimus) 4-5 year-old on pack ice, low angle shot, off the 1002 area of the Arctic National Wildlife Refuge, North Slope of the Brooks Range, Alaska, Beaufort Sea, autumn
Red fox {Vulpes vulpes} cubs playing, Rocky Mt Arsenal NWR, Colorado, USA
01194458
Shattil & Rozinski / Red fox {Vulpes vulpes} cubs playing, Rocky Mt Arsenal NWR, Colorado, USA
Red fox {Vulpes vulpes} cubs playing, Rocky Mt Arsenal NWR, Colorado, USA
01194453
Shattil & Rozinski / Red fox {Vulpes vulpes} cubs playing, Rocky Mt Arsenal NWR, Colorado, USA
Aerial view of Bombay Hook NWR, Delaware Bay, Delaware, USA.  Salt marsh and refuge for migratory flocks of Greater snow geese.  November 2005, BBC Planet Earth
01159339
Mark Brownlow / Aerial view of Bombay Hook NWR, Delaware Bay, Delaware, USA. Salt marsh and refuge for migratory flocks of Greater snow geese. November 2005, BBC Planet Earth
Aerial view of Bombay Hook NWR, Delaware Bay, Delaware, USA.  Salt marsh and refuge for migratory flocks of Greater snow geese.  November 2005, BBC Planet Earth
01159340
Mark Brownlow / Aerial view of Bombay Hook NWR, Delaware Bay, Delaware, USA. Salt marsh and refuge for migratory flocks of Greater snow geese. November 2005, BBC Planet Earth
Aerial view of Snow goose (Chen caerulescens) flock in flight, part of annual migration, Bombay Hook NWR, Delaware Bay, Delaware, USA.  November 2005, BBC Planet Earth
01159341
Mark Brownlow / Aerial view of Snow goose (Chen caerulescens) flock in flight, part of annual migration, Bombay Hook NWR, Delaware Bay, Delaware, USA. November 2005, BBC Planet Earth
Aerial view of Bombay Hook NWR, Delaware Bay, Delaware, USA.  Salt marsh and refuge for migratory flocks of Greater snow geese. November 2005, BBC Planet Earth
01159336
Mark Brownlow / Aerial view of Bombay Hook NWR, Delaware Bay, Delaware, USA. Salt marsh and refuge for migratory flocks of Greater snow geese. November 2005, BBC Planet Earth