Danny Green / Polar bear (Ursus maritimus) and cubs feeding on Whale carcass. Svalbard, Norway, July.
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Danny Green / Polar bear (Ursus maritimus) walking across ice, snow covered mountain in background. Svalbard, Norway, April 2018.
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Danny Green / Polar bear (Ursus maritimus) male standing beside rocks in frozen and snow covered landscape. Svalbard, Norway, April 2019.
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Danny Green / Polar bear (Ursus maritimus) male walking across frozen landscape. Svalbard, Norway, April 2019.
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Danny Green / Polar bear (Ursus maritimus) male in snow. Svalbard, Norway, April.
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Danny Green / Polar bear (Ursus maritimus), male and female approaching each other across snow covered rocky landscape. Svalbard, Norway, April 2019.
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Danny Green / Arctic fox (Vulpes lagopus), two in snow covered landscape. Svalbard, Norway, April 2019.
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Danny Green / RF - Polar bear (Ursus maritimus) cub walking in snow. Svalbard, Norway, April. (This image may be licensed either as rights managed or royalty free.)
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Danny Green / RF - Polar bear (Ursus maritimus) female walking across ice. Svalbard, Norway, April. (This image may be licensed either as rights managed or royalty free.)
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Danny Green / Polar bear (Ursus maritimus) female and cubs play fighting. Svalbard, Norway, March 2018.
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Danny Green / Polar bear (Ursus maritimus) two walking in snowy landscape with glacier behind. Svalbard, Norway, April 2018.
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Danny Green / Polar bear (Ursus maritimus) male female pair looking upwards, snow covered hills in background. Svalbard, Norway, April 2018.
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Danny Green / Polar bear (Ursus maritimus) group on ice, female and cubs feeding on Whale carcass. Svalbard, Norway, June 2018.
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Danny Green / Polar bear (Ursus maritimus) cub ready to jump down from pack ice. Svalbard, Norway, April.
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Danny Green / Arctic fox (Alopex lagopus) in snow. Svalbard, Norway. April.
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Stefan Christmann / Emperor penguin (Aptenodytes forsteri) colony huddled together under the Southern Lights, Aurora australis, Atka Bay, Antarctica. September.
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Terry Whittaker / Arctic fox (Vulpes lagopus). Blue colour morph. Hornstrandir Nature Reserve, Iceland. March
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Terry Whittaker / RF - Arctic foxes (Vulpes lagopus) interacting Blue colour morph. Hornstrandir Nature Reserve, Iceland. March. (This image may be licensed either as rights managed or royalty free.)
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Stefan Christmann / Drifts of snow around glacier, Atka Bay, Queen Maud Land, Antarctica. October 2017.
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Stefan Christmann / Emperor penguin (Aptenodytes forsteri), two males, one brooding young chick, the other incubating hatching egg. Atka Bay, Antarctica. August. Series 4/4.
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Stefan Christmann / Emperor penguin (Aptenodytes forsteri), two males, one brooding young chick, the other incubating hatching egg. Atka Bay, Antarctica. August. Series 3/4.
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Stefan Christmann / Emperor penguin (Aptenodytes forsteri), two males, one brooding young chick, the other incubating hatching egg. Atka Bay, Antarctica. August. Series 2/4.
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Stefan Christmann / Emperor penguin (Aptenodytes forsteri), two males, one brooding young chick, the other incubating hatching egg. Atka Bay, Antarctica. August. Series 1/4.
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Stefan Christmann / Emperor penguin (Aptenodytes forsteri) pair with recently laid egg, on sea ice. Atka Bay, Antarctica. May.
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Stefan Christmann / Emperor penguin (Aptenodytes forsteri) colony huddling, males incubating eggs, on sea ice under full moon in polar night. Atka Bay, Antarctica. July 2017.
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Stefan Christmann / Member of BBC Dynasties crew photographing on sea ice in light of full moon, during polar night. Atka Bay, Antarctica. July 2017.
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Stefan Christmann / Emperor penguin (Aptenodytes forsteri) brooding young chick on feet, brooding adult in background. Atka Bay, Antarctica. August.
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Stefan Christmann / Emperor penguin (Aptenodytes forsteri) egg shell on sea ice. Atka Bay, Antarctica. August.
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Stefan Christmann / Emperor penguin (Aptenodytes forsteri), four journeying across sea ice to feed young. Atka Bay, Antarctica. August.
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Stefan Christmann / Emperor penguin (Aptenodytes forsteri) preparing to jump over crack in sea ice. Atka Bay, Antarctica. August.
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Stefan Christmann / Emperor penguin (Aptenodytes forsteri) breeding colony on sea ice, ice shelf in background. Atka Bay, Antarctica. August.
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Stefan Christmann / Emperor penguin (Aptenodytes forsteri) group of brooding males amongst drifting snow. Atka Bay, Antarctica. August.
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Stefan Christmann / Emperor penguin (Aptenodytes forsteri) footprints on sea ice. Atka Bay, Antarctica. August.
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Stefan Christmann / Moon bow, a halo around the moon during polar night. Sastrugi on sea ice in foreground. Atka Bay, Antarctica. June.
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Stefan Christmann / Emperor penguin (Aptenodytes forsteri) pair in courtship, on sea ice. Atka Bay, Antarctica. May.
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Stefan Christmann / Emperor penguin (Aptenodytes forsteri) pair, female laying egg. Atka Bay, Antarctica. June.
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Stefan Christmann / Emperor penguin (Aptenodytes forsteri) pair mating on sea ice. Atka Bay, Antarctica. May.
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Stefan Christmann / Cameraman Lindsay McCrae on sea ice filming frozen landscape and icebergfor BBC Dynasties Penguin programme. Atka Bay, Antarctica. October 2017.
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Stefan Christmann / Emperor penguin (Aptenodytes forsteri) group sliding over ice, returning to form breeding colony. Atka Bay, Antarctica. April.
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Stefan Christmann / Emperor penguin (Aptenodytes forsteri) group sliding over sea ice, returning to form breeding colony. Iceberg in background. Atka Bay, Antarctica. April 2017.
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Stefan Christmann / Emperor penguin (Aptenodytes forsteri) walking across crack in sea ice during return to breeding colony. Atka Bay, Antarctica. April.
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Stefan Christmann / Emperor penguin (Aptenodytes forsteri) group sliding across sea ice to form breeding colony. Atka Bay, Antarctica. April 2017.
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Stefan Christmann / Emperor penguin (Aptenodytes forsteri) sliding across sea ice in journey to breeding colony. Sastrugi in ice formed by wind erosion. Atka Bay, Antarctica. April.
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Stefan Christmann / Emperor penguin (Aptenodytes forsteri), four chicks in moult aged 20-24 weeks, parents away fishing in open water. Atka Bay, Antarctica. January.
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Stefan Christmann / Emperor penguin (Aptenodytes forsteri), breeding colony with individuals in foreground walking to / from open water. Atka Bay, Antarctica. September 2017.
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Stefan Christmann / Emperor penguin (Aptenodytes forsteri), three in a row, walking through drifting snow to feed young. Atka Bay, Antarctica. September.
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Stefan Christmann / Emperor penguin (Aptenodytes forsteri) adult brooding chick with two additional chicks seeking protection while parents are at sea. Atka Bay, Antarctica. September.
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Stefan Christmann / Emperor penguin (Aptenodytes forsteri) chick aged six to eight weeks, portrait. Atka Bay, Antarctica. September.
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Stefan Christmann / Emperor penguin (Aptenodytes forsteri) group clambering up slope during journey to bring back food for young. Atka Bay, Antarctica. September.
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Sven Zacek / Eurasian beaver (Castor fiber) on ice besides reeds in Emajogi River, Tartumaa, Southern Estonia. January.
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Pal Hermansen / Skating area labyrinth surrounded by snow, aerial view. Akershus, Norway. December 2017.
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David Tipling / Snow petrel (Pagadroma nivea nivea) flying around Iceberg off South Georgia, Southern Ocean January
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Terry Whittaker / Arctic fox (Vulpes lagopus) feeding in snow, blue colour morph, Hornstrandir Nature Reserve, Iceland, March.
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Terry Whittaker / Arctic fox (Vulpes lagopus) feeding and digging in snow whilst hunting, blue colour morph, Hornstrandir Nature Reserve, Iceland, March.
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David Allemand / Arctic fox (Vulpes lagopus) young fox pouncing, Iceland. October.
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Guy Edwardes / Rannoch Moor and The Black Mount in winter, Highlands, Scotland, UK. January 2015.
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Guy Edwardes / Buachaille Etive Mor in winter, Rannoch Moor, Highlands, Scotland, UK. January 2015.
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Guy Edwardes / Buachaille Etive Mor in snow, Rannoch Moor, Highlands, Scotland, UK. January 2015.
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Gavin Hellier / Timelapse from day to night of people visiting the illuminated ice sculptures at the Harbin Ice and Snow Festival, Heilongjiang Province, China, February 2015. Hellier
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Pal Hermansen / Aerial shot of an ice skating arena, Lake Langen, Akershus, Norway, December 2017.
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Pal Hermansen / Aerial shot of lake covered by the first snow, Bindingsvann, Akershus, November Norway, November 2017.
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Frederique Olivier / Wide-angle shot of a group of Emperor penguin (Aptenodytes forsteri) chicks walking on sea ice, Adelie Land, Antarctica, January.
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Frederique Olivier / Emperor penguin (Aptenodytes forsteri) chick begging for food from parent, Adelie Land, Antarctica, January.
Frederique Olivier / Close-up of a group of Emperor penguin (Aptenodytes forsteri) chicks huddled together in a blizzard, covered in snow, Adelie Land, Antarctica, January.
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Frederique Olivier / Emperor penguin (Aptenodytes forsteri) chicks huddled together during a blizzard, Adelie Land, Antarctica, January.
Benjamin Olson / Skim ice in negative thirty degree fahrenheit at sunrise, Lake Superior, Grand Portage National Monument, Minnesota
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Tony Wu / Polar bear (Ursus maritimus) female with a single young cub, only a few months old, northern Svalbard, Norway, June
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Cyril Ruoso / Golden monkey (Rhinopithecus roxellana) jumping over a frozen stream, Qinling Mountains, China. Sequence 2 of 7
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Jussi Murtosaari / European Dipper (Cinclus cinclus) on ice next to stream, winter, Finland. February.
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Pal Hermansen / One-year ice off Ellesmere island, Nunavut, Canada, August.
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Matthias Breiter / Polar Bear (Ursus maritimus) male resting on ice, Hudson Bay, Manitoba, Canada
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Orsolya Haarberg / Snow covered Norway spruce (Picea abies) trees at the treeline, Stubba Nature Reserve, Laponia, Sweden, February 2013.
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Wim van den Heever / White tailed sea eagle (Haliaeetus albicilla) feeding on fish on pack ice, Hokkaido, Japan, February.
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Sven Zacek / Wide angle view of Otter (Lutra lutra) walking on the ice of a river, Southern Estonia, January.
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Sven Zacek / American mink (Mustela vison) shaking off fur on ice with Common frog (Rana temporaria) prey, Tartumaa, Estonia, January. Introduced species.
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Sven Zacek / Broken ice covered in snow at sunset, on the shore of Lake Vortsjarv, gathered to shore by extreme winds, Estonia. December 2014.
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Sven Zacek / View through glacier ice towards snow-covered mountains in Kongsfjorden fjord in Svalbard, Norway. June 2015.
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Sven Zacek / Pink algae in fresh snow on the coast of the Baltic Sea, Lahemaa National Park, Northern Estonia. December 2012.
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Peter Cairns / Selfoss waterfall in autumn with snow, north Iceland, September 2013.
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Ole Jorgen Liodden / Gentoo penguin (Pygoscelis papua) alone on blue ice, Antarctica, March.
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David Pattyn / Alpine ibex (Capra ibex) male in deep snow with icicles behind, Gran Paradiso National Park, Italy. December
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Frederique Olivier / Adelie penguins (Pygoscelis adeliae) in front of French Icebreaker L'Astrolabe, on edge of the fast ice off Dumont D'Urville station, Antarctica. December 2014.
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Tui De Roy / Emperor penguin (Aptenodytes forsteri), Amanda Bay, Prydz Bay, Ingrid Christensen Coast, East Antarctica, November.
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Tui De Roy / Emperor penguin (Aptenodytes forsteri), Amanda Bay, Prydz Bay, Ingrid Christensen Coast, East Antarctica, November.
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Tui De Roy / Emperor penguin (Aptenodytes forsteri) tobogganing, Amanda Bay, Prydz Bay, Ingrid Christensen Coast, East Antarctica, November.
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Tui De Roy / Emperor penguin (Aptenodytes forsteri), Amanda Bay, Prydz Bay, Ingrid Christensen Coast, East Antarctica, November.
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Tui De Roy / Emperor penguin (Aptenodytes forsteri) chicks, Amanda Bay, Prydz Bay, Ingrid Christensen Coast, East Antarctica, November.