Roy Mangersnes / Juvenile female Polar bear (Ursus maritimus) lying down protecting a seal carcass at sunset, Svalbard, Norway, March.
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Ingo Arndt / Grizzly bear (Ursus arctos horribilis) silhouette at sunset, Lake Clark National Park, Alaska, USA, July.
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Steven Kazlowski / Polar bear (Ursus maritimus) silhouetted against setting sun, Bernard Spit, off the 1002 Area, Arctic National Wildlife Refuge, North Slope, Alaska, USA, October. Vulnerable species.
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Steven Kazlowski / Polar bear (Ursus maritimus) portrait against sky at sunset, Bernard Spit, off the 1002 Area, Arctic National Wildlife Refuge, North Slope, Alaska, USA, September. Vulnerable species.
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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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Sean Crane / Polar Bear (Ursus maritimus) at sunrise, Hudson Bay, Seal River, Manitoba, Canada
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Nick Garbutt / Bornean sun bear (Helarctos malayanus euryspilus) climbing tree at Bornean Sun Bear Conservation Centre (BSBCC), Sepilok, Sabah, Borneo.
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Ole Jorgen Liodden / Polar Bear (Ursus maritimus) in arctic ice landscape backlit by midnight sun. Nordaustlandet, Svalbard, August.
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Andy Rouse / Silhouette of Grizzly bear (Ursus arctos horribilis) walking along beach, Katmai NP, Alaska, USA, August
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Edwin Giesbers / Malayan Sun Bear (Ursus malayanus) head portrait. Captive-native to southeast Asia. Vulnerable
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Nick Garbutt / Adult Polar bear (Ursus maritimus) at sunset on tundra vegetation on shores of Hudson Bay, Canada (late Sept). Digitally Modified.
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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.
