Ernie Janes / Brent geese (Branta bernicla) flying with moon, Titchwell, Norfolk, UK, December
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Brent Stephenson / Type B Killer whale (Orca orcinus) surfacing, close-up, Antarctic Sound, Antarctic Peninsula, Antarctic, January.
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Brent Stephenson / Three King penguins (Aptenodytes patagonicus) in light drizzle with a faint rainbow in the background, St Andrew's Bay, South Georgia, South Atlantic, January.
Brent Stephenson / Sunset off Scott Island, with floating pieces of sea ice, Scott Inlet, Baffin Island, Canadian Arctic, August 2015.
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Brent Stephenson / Polar bear (Ursus maritimus) mother and large second year cub swim across calm water, Scott Inlet, Baffin Island, Canadian Arctic, August. Vulnerable species.
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Brent Stephenson / Young Polar bear (Ursus maritimus) walking across melting sea ice, Scott Inlet, Baffin Island, Canadian Arctic, August. Vulnerable species.
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Brent Stephenson / Male Polar bear (Ursus maritimus) feeding on a first year Polar bear cub it has just killed, Scott Inlet, Baffin Island, Canadian Arctic, August. Vulnerable species.
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Brent Stephenson / Male Polar bear (Ursus maritimus) feeding on a first year Polar bear cub it has just killed, Scott Inlet, Baffin Island, Canadian Arctic, August. Vulnerable species.
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Brent Stephenson / Tui (Prosthemadera novaeseelandiae) on New Zealand flax (Phormium) flowerhead, with yellow pollen on head, Te Awanga Lagoon, Hawkes Bay, New Zealand, November.
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Brent Stephenson / Southern royal albatross (Diomedea epomophora) flying over sea, Off Stewart Island, New Zealand, November, Vulnerable species.
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Brent Stephenson / Southern royal albatross (Diomedea epomophora) flying low over the sea, off Stewart Island, New Zealand, November, Vulnerable species.