Northern lights (Aurora borealis) over a Nenets herders' camp. Yamal Peninsula, Western Siberia, Russia, 2001.
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Bryan and Cherry Alexander / Northern lights (Aurora borealis) over a Nenets herders' camp. Yamal Peninsula, Western Siberia, Russia, 2001.
Chinese fisherman on his raft with Great Cormorant (Phalacrocorax carbo sinensis), silhouetted against the karst hills at the Li River. Yangshuo, Guangxi, China, November.
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Florian Möllers / Chinese fisherman on his raft with Great Cormorant (Phalacrocorax carbo sinensis), silhouetted against the karst hills at the Li River. Yangshuo, Guangxi, China, November.
Dawn over the Segama River, with mist hanging over lowland rainforest. Heart of Danum Valley, Sabah, Borneo.
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Nick Garbutt / Dawn over the Segama River, with mist hanging over lowland rainforest. Heart of Danum Valley, Sabah, Borneo.
Red panda (Ailurus fulgens) habitat, at dusk, Pangolakha Wildlife Sanctuary, Sikkim, India
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Dr. Axel Gebauer / Red panda (Ailurus fulgens) habitat, at dusk, Pangolakha Wildlife Sanctuary, Sikkim, India
Chocolate Hills, Bohol, The Visayas, Philippines. February 2011.
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David Noton / Chocolate Hills, Bohol, The Visayas, Philippines. February 2011.
Wildlife viewing platform, with chital deer (Axis axis) in the distance, Sundarbans National Park, the largest mangrove swamp in the world. Bangladesh. UNESCO World Heritage Site. June 2012.
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Enrique Lopez-Tapia / Wildlife viewing platform, with chital deer (Axis axis) in the distance, Sundarbans National Park, the largest mangrove swamp in the world. Bangladesh. UNESCO World Heritage Site. June 2012.
Reef covered with hard corals, Brush Coral (Acropora hyacinthus) Robust Acropora (Acropora robusta) and other Acropora, Maldives, Indian Ocean
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Franco Banfi / Reef covered with hard corals, Brush Coral (Acropora hyacinthus) Robust Acropora (Acropora robusta) and other Acropora, Maldives, Indian Ocean
Aerial view of the River Kinabatangan and riverine tropical rainforest, Sabah, Malaysia, Borneo, Asia.
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Juan Carlos Munoz / Aerial view of the River Kinabatangan and riverine tropical rainforest, Sabah, Malaysia, Borneo, Asia.
Gelada baboon (Theropithecus gelada) male sitting on cliff edge against backdrop of Simien Mountains, Simien Mountains National Park, Ethiopia, November
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Anup Shah / Gelada baboon (Theropithecus gelada) male sitting on cliff edge against backdrop of Simien Mountains, Simien Mountains National Park, Ethiopia, November
Boabab trees {Adansonia grandidieri} in evening light. Morondava, Madagascar, October 2009
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Alex Hyde / Boabab trees {Adansonia grandidieri} in evening light. Morondava, Madagascar, October 2009
Fishermen on their boat in front of sunlit clouds. Ramena beach, Diego Suarez (Antsiranana) in north Madagascar, June 2007.
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Inaki Relanzon / Fishermen on their boat in front of sunlit clouds. Ramena beach, Diego Suarez (Antsiranana) in north Madagascar, June 2007.
Erg Chebbi Dunes, Sahara Desert, Morocco, North Africa, March 2011.
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Ernie Janes / Erg Chebbi Dunes, Sahara Desert, Morocco, North Africa, March 2011.
Topi (Damaliscus korrigum / lunatus) silhouetted at sunset. Masai Mara, Kenya, September.
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Ole Jorgen Liodden / Topi (Damaliscus korrigum / lunatus) silhouetted at sunset. Masai Mara, Kenya, September.
Sand dunes in the Libyan desert, Sahara, Libya, North Africa, December 2007
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Konrad Wothe / Sand dunes in the Libyan desert, Sahara, Libya, North Africa, December 2007
Mountain gorillas (Gorilla beringei) Hirwa group led by the silverback dominant male Munyinya, Volcanoes National Park, Rwanda, elevation 2610 m
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Christophe Courteau / Mountain gorillas (Gorilla beringei) Hirwa group led by the silverback dominant male Munyinya, Volcanoes National Park, Rwanda, elevation 2610 m
A wooden walkway through the mangroves of Jozany Forest, Zanzibar Island, Tanzania
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Enrique Lopez-Tapia / A wooden walkway through the mangroves of Jozany Forest, Zanzibar Island, Tanzania
RF- African Elephant (Loxodonta africana) male and Mount Kilimanjaro. Amboseli National Park, Kenya. (This image may be licensed either as rights managed or royalty free.)
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Denis-Huot / RF- African Elephant (Loxodonta africana) male and Mount Kilimanjaro. Amboseli National Park, Kenya. (This image may be licensed either as rights managed or royalty free.)
Epupa falls, Cunene river, Namibia, 1999
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Loic Poidevin / Epupa falls, Cunene river, Namibia, 1999
Sunset silhouetting tree, with roosting vultures, Masai-Mara game reserve, Kenya
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Denis-Huot / Sunset silhouetting tree, with roosting vultures, Masai-Mara game reserve, Kenya
RF- Elephant (Loxodonta Africana) herd in wetlands, aerial view, Okavango delta, Botswana (This image may be licensed either as rights managed or royalty free.)
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Denis-Huot / RF- Elephant (Loxodonta Africana) herd in wetlands, aerial view, Okavango delta, Botswana (This image may be licensed either as rights managed or royalty free.)
Savanna landscape wirh Grant's zebras (Equus quagga boehmi) and acacia trees, Masai Mara National Reserve, Kenya, Africa.
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Eric Baccega / Savanna landscape wirh Grant's zebras (Equus quagga boehmi) and acacia trees, Masai Mara National Reserve, Kenya, Africa.
Landscape view of Camus Malag beach on Loch Slapin, looking towards the Cuillin Hills, Isle of Skye, Inner Hebrides, Scotland, UK, October 2012.
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Peter Cairns / 2020VISION / Landscape view of Camus Malag beach on Loch Slapin, looking towards the Cuillin Hills, Isle of Skye, Inner Hebrides, Scotland, UK, October 2012.
RF- Trees reflecting in Loch Vaa, Cairngorms National Park, Scotland, UK, October 2012. (This image may be licensed either as rights managed or royalty free.)
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Peter Cairns / 2020VISION / RF- Trees reflecting in Loch Vaa, Cairngorms National Park, Scotland, UK, October 2012. (This image may be licensed either as rights managed or royalty free.)
Melting ice on Jokulsarlon beach. Southern Iceland, Europe, November 2012.
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Juan Carlos Munoz / Melting ice on Jokulsarlon beach. Southern Iceland, Europe, November 2012.
Svartifoss Waterfall and basalt columns, Skaftafell National Park. Iceland, July 2009.
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Juan Carlos Munoz / Svartifoss Waterfall and basalt columns, Skaftafell National Park. Iceland, July 2009.
Thawing glacier ice. Skaftafell National Park, Southern Iceland, Iceland, Europe, November 2012.
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Juan Carlos Munoz / Thawing glacier ice. Skaftafell National Park, Southern Iceland, Iceland, Europe, November 2012.
Hawthorn tree (Crataegus monogyna) and granite outcrop near Saddle Tor, Dartmoor National Park, Devon, England, UK, January 2011.
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Ross Hoddinott / 2020VISION / Hawthorn tree (Crataegus monogyna) and granite outcrop near Saddle Tor, Dartmoor National Park, Devon, England, UK, January 2011.
Hraunfossar waterfall and  autumn vegetation, Iceland.
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Orsolya Haarberg / Hraunfossar waterfall and autumn vegetation, Iceland.
Matterhorn (4,478m) and moon reflected in Lake Riffel, Switzerland, September 2011.
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Benjamin Barthelemy / Matterhorn (4,478m) and moon reflected in Lake Riffel, Switzerland, September 2011.
Landscape view of earth deposits in an old ochre quarry, Le Colorado Provencal de Rustrel, Provence, France, February 2011.
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Benjamin Barthelemy / Landscape view of earth deposits in an old ochre quarry, Le Colorado Provencal de Rustrel, Provence, France, February 2011.
Water flowing over the Cascade des Tufs aux Planches, Arbois, Franche-Comte, France, May 2012.
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Benjamin Barthelemy / Water flowing over the Cascade des Tufs aux Planches, Arbois, Franche-Comte, France, May 2012.
Long exposure of Godafoss waterfall, Iceland.
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Inaki Relanzon / Long exposure of Godafoss waterfall, Iceland.
View looking out over lava field at dusk with mountains in the background, West Icelend, January 2013
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Ben Hall / View looking out over lava field at dusk with mountains in the background, West Icelend, January 2013
Aurora Borealis display over mountains at night, West Icelend, January 2013
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Ben Hall,Ben Hall / Aurora Borealis display over mountains at night, West Icelend, January 2013
Aurora Borealis display over fjord at night, West Iceland, January 2013
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Ben Hall / Aurora Borealis display over fjord at night, West Iceland, January 2013
Rhiolite mountains. Landmannalaugar, Iceland. June 2008
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Orsolya Haarberg,Orsolya Haarberg / Rhiolite mountains. Landmannalaugar, Iceland. June 2008
Wetland area with Purple Loosestrife (Lythrum salicaria) Meinerswijk near Arnhem, the Netherlands, on a summer evening, August 2007
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Theo Bosboom / Wetland area with Purple Loosestrife (Lythrum salicaria) Meinerswijk near Arnhem, the Netherlands, on a summer evening, August 2007
Giant's Causeway, UNESCO World Heritage Site, County Antrim, Northern Ireland, Europe, June 2011.
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Juan Carlos Munoz / Giant's Causeway, UNESCO World Heritage Site, County Antrim, Northern Ireland, Europe, June 2011.
Giant's Causeway, UNESCO World Heritage Site, County Antrim, Northern Ireland, June 2011.
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Juan Carlos Munoz / Giant's Causeway, UNESCO World Heritage Site, County Antrim, Northern Ireland, June 2011.
Common Poppies (Papaver rhoeas) in field of Barley (Hordeum vulgare) on the South Downs, Sussex, England, UK, June 2011.
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Peter Lewis / Common Poppies (Papaver rhoeas) in field of Barley (Hordeum vulgare) on the South Downs, Sussex, England, UK, June 2011.
Single hawthorn (Crataegus monogyna) tree on hillside, Deep Dale, Derbyshire, England, UK, May 2013.
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Chris Mattison / Single hawthorn (Crataegus monogyna) tree on hillside, Deep Dale, Derbyshire, England, UK, May 2013.
View across the Liefdefjorden, with seaweed visible beneath the surface, Spitzbergen, Svalbard, Norway, June, 2012.
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Christophe Courteau / View across the Liefdefjorden, with seaweed visible beneath the surface, Spitzbergen, Svalbard, Norway, June, 2012.
Ice pile of broken shelf ice, near the shore of Lake Baikal, Siberia, Russia, March.
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Olga Kamenskaya / Ice pile of broken shelf ice, near the shore of Lake Baikal, Siberia, Russia, March.