Bert Willaert / Titicaca water frog (Telmatobius culeus) swimming underwater, Lake Titicaca, Bolivia. Critically endangered species.
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Alex Hyde / Sheetweb weaving spider (Linyphiidae) in web at sunset. The silk is refracting the light into a rainbow of coloured bands. Slovenia, July.
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Staffan Widstrand / King eider duck (Somateria spectabilis) male, Batsfjord village harbour, Varanger Peninsula, Norway.
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George Sanker / North American river otter (Lontra canadensis) two in water with autumnal trees reflected in the water, Acadia National Park, Maine, USA, October.
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Tui De Roy / White-vented storm petrel (Oceanites gracilis galapagoensis) 'walking' on surface of water whilst foraging, Galapagos
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George Sanker / North American River Otter (Lontra canadensis) two swimming near the surface with autumn leaves reflected in water, Acadia National Park, Maine, USA, October.
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Pascal Kobeh / Sicklefin lemon shark (Negaprion acutidens) in the lagoon of Picard Island, Aldabra, Seychelles, Indian Ocean.
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Olga Kamenskaya / Transparent ice formation on Lake Baikal, Siberia, Russia, March 2012.
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Olga Kamenskaya / Pyramidal ice fragment reflected on the surface of Lake Baikal. Ice fragment acting as a prism refracting light into rainbow. Siberia, Russia, March.
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Chris & Monique Fallows / Common dolphin (Dephinus delphis) porpoising, False Bay, Cape Town, South Africa.
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Theo Bosboom,Theo Bosboom / Common blue damselflies (Enallagma cyathigerum) flying over water, in a fen Hondeven, east Holland, June
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Felicity Lanchester,Felicity Lanchester / Cloud iridescence forming above a cumulonimbus cloud, caused by light refraction through individual water droplets and ice crystals at high altitude, Sierra Leone.
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Niall Benvie / Detail of small waves on the eastern Atlantic. Isle of Coll, Scotland, October 2012.
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Niall Benvie,Niall Benvie / Detail of small waves on the eastern Atlantic. Isle of Coll, Scotland, October 2012.
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Alex Mustard / RF- Florida manatee (Trichechus manatus latirostrus) portrait in Three Sisters Spring. Crystal River, Florida, USA. February 2010. (This image may be licensed either as rights managed or royalty free....
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Nick Upton / David Bavin using a wedge prism relascope to record the tree density of coniferous plantation habitat where Pine Martens (Martes martes) have been reintroduced by the Vincent Wildlife Trust, Cambrian...
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Phil Savoie / European Greenfinch (Chloris chloris) flying at dawn. When backlit the tiny transparent barbs that make up the feather act like a prism revealing vivid colours in the early light. Monmouthshire, Wales...
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Phil Savoie / European Greenfinch (Chloris chloris) flying at dawn. When backlit the tiny transparent barbs that make up the feather act like a prism revealing vivid colours in the early light. Monmouthshire, Wales...
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Phil Savoie / European Greenfinch (Chloris chloris) flying at dawn. When backlit the tiny transparent barbs that make up the feather act like a prism revealing vivid colours in the early light. Monmouthshire, Wales...
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Ingo Arndt / Olive ridley sea turtle (Lepidochelys olivacea) swimming in open ocean not far from the nesting beach, Pacific Coast, Ostional, Costa Rica.
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Terry Whittaker / Project Officer Dave Bavin conducting woodland surveys at potential release sites, using a wedge prism to measure density of forest, Pine Marten Recovery Project, Vincent Wildlife Trust, Ceredigion, W...
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Terry Whittaker / Project Officer Dave Bavin conducting woodland surveys at potential release sites, using a wedge prism to measure density of forest, Pine Marten Recovery Project, Vincent Wildlife Trust, Ceredigion, W...
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Nick Upton / Wedge prism relascope used to record the tree density of coniferous plantation habitat where Pine martens (Martes martes) have been reintroduced by the Vincent Wildlife Trust, Cambrian Mountains, Wale...
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Nick Upton / David Bavin using a wedge prism relascope to record the tree density of coniferous plantation habitat where Pine martens (Martes martes) have been reintroduced by the Vincent Wildlife Trust as Josie B...
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Nick Upton / David Bavin using a wedge prism relascope to record the tree density of coniferous plantation habitat where Pine martens (Martes martes) have been reintroduced by the Vincent Wildlife Trust as Josie B...
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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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Juan Carlos Munoz / California sea lion (Zalophus californianus), Copenhangen Zoo, Denmark, Europe. Captive
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Pascal Kobeh / Bottlenose dolphins (Tursiops truncatus) approaching with curiosity, Dolphin Reef, Eilat, Israel. Red Sea.
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Ben Cranke / Reflections of clouds in ripples of sea water, Svalbard, Norway, June 2010.
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Pal Hermansen / Svalbard Global Seed Vault, with glittering facade designed by artist Dyveke Sanne. Light reflected in steel, mirrors, and prisms in landscape, Svalbard, Norway, October 2012.
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Pal Hermansen / Moon and glittering facade designed by artist Dyveke Sanne, on the roof of the Svalbard Global Seed Vault. Light reflected in steel, mirrors, and prisms in landscape, Svalbard, Norway, October 2012
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Pal Hermansen / Svalbard Global Seed Vault, with glittering facade designed by artist Dyveke Sanne., on the roof of the Svalbard Global Seed Vault. Light reflected in steel, mirrors, and prisms in landscape, Svalbard...
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Pedro Narra / Bottlenose Dolphin (Tursiops truncatus) reflected at the surface, Sado Estuary, Portugal
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Danny Green / Steller's Eider (Polysticta stelleri) male swimming, Varangerfjord, Norway, April, Vulnerable species. Bookplate from Danny Green's 'The Long Journey North'
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David Tipling / Dalmatian Pelicans (Pelicanus crispus) being fed by fisherman at Lake Kerkini, Northern Greece, February
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Chris Gomersall / 2020VISION / Grey seal (Halichoerus grypus) scavenging fish around trawlers in Lerwick harbour, Shetland Isles, Scotland, UK, October 2012.
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Alex Mustard / RF- Whale shark (Rhincodon typus) at the surface, Isla Mujeres, Quintana Roo, Yucatan Peninsular, Mexico, Caribbean Sea. Vulnerable species. (This image may be licensed either as rights managed or roy...
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Merryn Thomas / Outside view of a prism (traditional device for bringing light into the cabin) with lines, aboard Bristol Pilot Cutter "Morwenna", Bristol Floating Harbour, UK. April 2009.
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Alex Mustard / RF- Young Whaleshark (Rhincodon typus) portrait, less than 5m in length, feeding on plankton near the surface. La Paz, Mexico. Sea of Cortez. October. (This image may be licensed either as rights mana...
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Andy Rouse / RF- Four Burchell's zebras (Equus quagga) drinking, Etosha National Park, Namibia. (This image may be licensed either as rights managed or royalty free.)
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Doug Perrine / RF- Atlantic sailfish (Istiophorus albicans) hunting sardines, off Yucatan Peninsula, Mexico, Caribbean Sea. (This image may be licensed either as rights managed or royalty free.)
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Doug Perrine / RF- Atlantic spotted dolphin with calf (Stenella frontalis). Bahamas. (This image may be licensed either as rights managed or royalty free.)
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Colin Seddon / RF- Grey seal juvenile in water (Halichoerus grypus), head portrait, captive. Seal Sanctuary, Cornwall, England. (This image may be licensed either as rights managed or royalty free.)
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Andy Sands / Close up of dew drop on grass tip showing grass behind refracted in droplet, Hertfordshire, England, UK. May. Focus stacked.
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Alex Hyde / Spiny orbweaver (Micrathena sp.) on its web, caught in a shaft of light penetrating the dense rainforest canopy, upper Caribbean slope cloud forest, Costa Rica.
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Lukas Schaefer / Close up of water droplets creating a rainbow in the spray from a waterfall, Ahrntal Valley, Alps, South Tyrol, Italy, June.
