Andy Rouse / Great crested grebe (Podiceps cristatus) on lake, Wales, UK, June.
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Tony Heald / Black-backed Jackal (Canis mesomelas) drinking, Kgalagadi Transfrontier Park, South Africa. January
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Michael Pitts / Green sea turtles (Chelonia mydas) mating turtles. Karan Island, Arabian Gulf.
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Benjamin Barthelemy,Benjamin Barthelemy / European White water lily, (Nymphaea alba) in flowers, Vallee de l'Eure, Eure-et-Loir, France, July.
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Juan Carlos Munoz / Broken ice abstract, Jokulsarlon glacier lagoon. Southern Iceland, Iceland, Europe, March 2011.
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Stephen Dalton / Water droplet dropping onto water
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John Cancalosi / Polymetallic nodule, also called manganese nodule, rock concretions on the sea bottom formed of concentric layers of iron and manganese hydroxides around a core. Blake plateau, Atlantic
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John Cancalosi / Polymetallic nodule, also called manganese nodule, rock concretion formed of concentric layers of iron and manganese hydroxides around a core. From Blake Plateau, Atlantic ocean, collected in 1970's.
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Graham Eaton / Little Grebe (Tachybaptus ruficollis) on water with juvenile Grey Mullet (Chelon labrosus). Bangor, Gwynedd, Wales. December.
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Graham Eaton / Little Grebe (Tachybaptus ruficollis) silhouetted on golden water at sunset. Gwynedd, Wales. December.
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Orsolya Haarberg / Rock covered in Concentric ring lichen (Arctoparmelia centrifuga) with old Scots pine trees (Pinus sylvestris) in the background, Stora Sjofallet National Park, Laponia, Sweden, June 2013.
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Chris Mattison / Concentric boulder lichen (Porpidia crustulata) growing on siliceous rock (sandstone). Derbyshire, England, UK, September.
