Sergio Hanquet / Green sea turtle (Chelonia mydas), two viewed from above. Tenerife, Canary Islands.
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Shane Gross / Flying fish (Exocoetidae) in Sargasso Sea, Atlantic Ocean.
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Clay Bolt / Blue-banded bee (Amegilla sp) males sleeping on stem. Halmahera, North Maluku, Indonesia.
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Doug Gimesy / Little penguin (Eudyptula minor) on rocks of St Kilda breakwater, Melbourne city lights in background. Victoria, Australia. January 2017.
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Daniel Heuclin / Vicuna (Vicugna vicugna), five running across salt flat with mountain in background. Salar de Ascotan, Chile. September 2018.
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Nick Hawkins / Silky shark (Carcharhinus falciformis). Cocos Island National Park, Costa Rica.
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Tui De Roy / Flightless cormorant (Phalacrocorax harrisi), two on rock. Bird drying wings in foreground with other sitting on nest in background. Cape Douglas, Fernandina Island, Galapagos.
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David Fleetham / Day / Big blue octopus (Octopus cyanea) with diver in background. Hawaii. September 2012.
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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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Tony Wu / Blue whale (Balaenoptera musculus indica) in Indian Ocean, Mirissa, Matara, Sri Lanka.
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Tony Wu / Asian sheepshead wrasse (Semicossyphus reticulatus), male in white breeding colouration. Niigata Prefecture, Honshu, Japan. June.