Frederique Olivier / View of icebergs and pack ice at sunset, seen from a moving boat, Antarctica.
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Frederique Olivier / Emperor penguin (Aptenodytes forsteri) tobogganing on an iceberg at sunset and diving from the edge, seen from a moving boat, Antarctica.
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Frederique Olivier / Drifting snow in high wind, Antarctica.
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Andres M. Dominguez / Dew on spiderweb with Grey-leaved cistus (Cistus albidus) Sierra de Grazalema Natural Park, El Bosque, southern Spain, April.
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Benjamin Barthelemy / Long exposure of tidal water flowing off rocks, with the Okshornan Mountains in the background, Isle of Senja, Troms, Norway, February 2015.
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Brent Stephenson / Sunset off Scott Island, with floating pieces of sea ice, Scott Inlet, Baffin Island, Canadian Arctic, August 2015.
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Jack Dykinga / Great horned owl (Bubo virginianus) chicks in nest in Saguaro cactus (Carnegiea gigantea) at sunset, Santa Catalina Mountains, Arizona, USA, May.
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Jack Dykinga / Cottonwood (Populus fremontii) in autumn, Long Canyon, Grand Staircase-Escalante National Monument, Utah, USA. October 2013.
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Ross Hoddinott / Sunset at Trebarwith Strand with incoming tide, North Cornwall, UK. March 2014.
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Alex Mustard / Split level view of shallow coral reef in the Red Sea at sunset. Gordon Reef, Sinai, Egypt. Strait of Tiran, Gulf of Aqaba, Red Sea.
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Bruno D'Amicis / Apennine chamois (Rupicapra pyrenaica ornata) adult male at sunset. Endemic to the Apennine mountains. Abruzzo, Italy, November.
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Nick Garbutt / Greater Flamingos (Phoenicopterus roseus) feeding in lake at sunrise at Ras Al Khor Wildlife Sanctuary (Ramsar site), with the Dubai skyline in the background and the first rays of the sun catching th...
