Terry Whittaker / Man being lowered down a cliff to collect seabird eggs, including those of Common guillemots (Uria aalge). Camera attached to helmet, Skoruvikurbjarg cliffs, Langanes Peninsula, Iceland, May.

Terry Whittaker / Man being lowered down a cliff to collect seabird eggs, including those of Common guillemots (Uria aalge). Camera attached to helmet, Skoruvikurbjarg cliffs, Langanes Peninsula, Iceland, May.

Terry Whittaker / Man being lowered down a cliff to collect seabird eggs, including those of Common guillemots (Uria aalge). Camera attached to helmet, Skoruvikurbjarg cliffs, Langanes Peninsula, Iceland, May.

Terry Whittaker / Man being lowered down a cliff to collect seabird eggs, including those of Common guillemots (Uria aalge). Camera attached to helmet, Skoruvikurbjarg cliffs, Langanes Peninsula, Iceland, May.

Sandra Bartocha / European beech tree (Fagus sylvatica). in woodland, Serrahn, Muritz-National Park, World Natural Heritage site, Germany, Europe. October 2015.

Ole Jorgen Liodden / Polar bear (Ursus maritimus) standing on ice floe, looking at camera. Svalbard, Norway. August.

Joris van Alphen / Montagu's harrier (Circus pygargus) preparing to land at her nest, clasping a songbird. Viewed from below. Groningen, the Netherlands. July.

Anup Shah / African elephants (Loxodonta africana) gathering at a waterhole, wide angle view. Maasai Mara National Reserve, Kenya.

Anup Shah / Cheetah (Acinonyx jubatus) male juvenile aged about 18 months approaching a kill, wide angle view. Maasai Mara National Reserve, Kenya.

Anup Shah / Marabou storks (Leptoptilos crumeniferus) feeding on catfish in waterhole, wide angle view. Maasai Mara National Reserve, Kenya.

Anup Shah / African elephant (Loxodonta africana) walking toward camera, Maasai Mara National Reserve, Kenya.

Anup Shah / African elephants (Loxodonta africana) wallowing at a waterhole, wide angle view. Maasai Mara National Reserve, Kenya.

Andy Rouse / Galapagos land iguana (Conolophus subcristatus) feeding, Urbina Bay, Isabela Island, Galapagos.

Alex Hyde / Emperor moth (Saturnia pavonia) female wide angle view showing heather moorland habitat. Peak District National Park, UK. April.

Claudio Contreras / Boat on canal between chinampas, a wetland agricultural system. Xochimilco wetlands, Mexico City, September

Chris & Monique Fallows / Wandering albatross (Diomedea exulans), feeding and cleaning.

Andy Rouse / Bengal tiger (Panthera tigris) walking portrait, Ranthambhore National Park, India. Crop of image 01500288 Endangered species.

Steven Kazlowski / Polar bear (Ursus maritimus) curious young bear approaching camera, over newly forming pack ice during autumn freeze up, Beaufort Sea, off Arctic coast, Alaska

Frederique Olivier / Adelie penguins (Pygoscelis adeliae) wide angle portrait of two with larger group in background, Antarctica.

Ann & Steve Toon / Ground squirrel (Xerus inauris) Kgalagadi Transfrontier Park, Northern Cape, South Africa Non-ex.

Ann & Steve Toon / Ground squirrel (Xerus inauris) Kgalagadi Transfrontier Park, Northern Cape, South Africa. Non-ex.

Sam Hobson / Young urban Red fox (Vulpes vulpes) standing in front of Bristol City Council dustbins. Bristol, UK, September.

Matthew Maran / Mute swans (Cygnus olor) Highgate Ponds, Hampstead Heath, London, UK, February.

Olga Kamenskaya / Man looking through transparent ice (1m thick) on lake surface to see diver below. Lake Baikal, Russia, March 2008. Model released.

Anup Shah / Lion (Panthera leo) cub aged about 2 years approaching with curiosity - remote wide angle perspective . Masai Mara National Reserve, Kenya. Taken with remote wide angle camera.

Anup Shah / Cape buffalo (Syncerus caffer) young male approaching with curiosity. Masai Mara Nationa Reserve, Kenya. Taken with remote wide angle camera.

Claudio Contreras / View from bangka boat at dawn, Danajon Bank, Central Visayas, Philippines, April 2013

Mark Taylor / German Shepherd Dog bitch pup, Coco, 14 weeks old, with raised paw.

Terry Whittaker / Man being lowered down a cliff to collect seabird eggs, including those of Common guillemots (Uria aalge). Camera attached to helmet, Skoruvikurbjarg cliffs, Langanes Peninsula, Iceland, May.

Alex Mustard / RF - Curious young grey seal (Halichoerus grypus) over kelp. Farne Islands, Northumberland, England, United Kingdom. British Isles. North Sea. (This image may be licensed either as rights managed or r...

Lynn M Stone / RF - Purebred domestic Jersey heifer on spring pasture. Canterbury, Connecticut, USA. May. (This image may be licensed either as rights managed or royalty free.)

David Tipling / RF - Northern Giant Petrel (Macronectes halli) near Kaikoura, New Zealand. November. (This image may be licensed either as rights managed or royalty free.)

David Tipling / RF - Wandering albatross (Diomedea exulans) pair displaying, Albatross Island, Bay of Isles, South Georgia. January 2015. (This image may be licensed either as rights managed or royalty free.)

Alex Hyde / RF - Red-eyed Leaf Frog male (Agalychnis callidryas) Central Caribbean foothills, Costa Rica. (This image may be licensed either as rights managed or royalty free.)

Richard Du Toit / Male Reticulated Giraffe (Giraffa camelopardalis) leaning forward. Ol Pejeta Conservancy, Laikipia County, Kenya.

Jeff Vanuga / View from kayak to woman in another kayak ahead, Shoshone Lake, Yellowstone National Park, Wyoming, USA, August 2014. Model released.

Jeff Vanuga / View from kayak to woman in another kayak ahead, Shoshone Lake, Yellowstone National Park, Wyoming, USA, August 2014. Model released.

Jeff Vanuga / Horseback riders riding Icelandic horses, Iceland. August 2014.

Jeff Vanuga / Horseback riders riding Icelandic horses across river, Iceland, August 2014.

Franco Banfi / Tiger shark (Galeocerdo cuvier) in front of the camera, Northern Bahamas, Caribbean Sea, Atlantic Ocean

Franco Banfi / Dusky grouper (Epinephelus marginatus) close up of face, Formigas Islet dive site, Azores, Portugal, Atlantic Ocean.

Franco Banfi / Cattle on Santa Maria Island, Azores, Portugal, Atlantic Ocean

Franco Banfi / Cattle on Santa Maria Island, Azores

Franco Banfi / Bull on Santa Maria Island, Azores, Portugal, Atlantic Ocean

Anup Shah / African elephants (Loxodonta africana) gathering at a waterhole, wide angle view. Maasai Mara National Reserve, Kenya.

Anup Shah / African elephants (Loxodonta africana) gathering at a waterhole, wide angle view. Maasai Mara National Reserve, Kenya.

Anup Shah / African buffalo (Syncerus caffer) herd on the move, wide angle view. Maasai Mara National Reserve, Kenya.

Anup Shah / Cheetah (Acinonyx jubatus) male scent marking a tree, wide angle view. Maasai Mara National Reserve, Kenya.

Anup Shah / Cheetah (Acinonyx jubatus) male approaching a tree, wide angle view, Maasai Mara National Reserve, Kenya.

Anup Shah / African elephants (Loxodonta africana) wallowing and drinking at a waterhole, wide angle perspective. Maasai Mara National Reserve, Kenya.

Anup Shah / African elephants (Loxodonta africana) wallowing at a waterhole, wide angle perspective. Maasai Mara National Reserve, Kenya.

Anup Shah / African elephants (Loxodonta africana) gathering at a waterhole, wide angle view. Maasai Mara National Reserve, Kenya.

Anup Shah / Marabou storks (Leptoptilos crumeniferus) feeding on catfish in waterhole, wide angle view. Maasai Mara National Reserve, Kenya.

Anup Shah / Marabou storks (Leptoptilos crumeniferus) feeding on catfish in waterhole, wide angle view. Maasai Mara National Reserve, Kenya.

Anup Shah / African buffalos (Syncerus caffer) approaching camera with curiosity, wide angle perspective, Maasai Mara National Reserve, Kenya.

Anup Shah / African buffalo (Syncerus caffer) male, wide angle view, Maasai Mara National Reserve, Kenya.

Anup Shah / Blue wildebeest (Connochaetes taurinus) herd running remote camera with wide angle perspective. Maasai Mara National Reserve, Kenya.

Anup Shah / Blue wildebeest herd running (Connochaetes taurinus) remote camera with wide angle perspective. Maasai Mara National Reserve, Kenya.

Anup Shah / African elephants (Loxodonta africana) wallowing at a waterhole, wide angle view. Maasai Mara National Reserve, Kenya.

Anup Shah / Marabou storks (Leptoptilos crumeniferus) feeding on catfish at waterhole, wide angle perspective, Maasai Mara National Reserve, Kenya.

Anup Shah / Marabou storks (Leptoptilos crumeniferus) feeding on catfish in waterhole, wide angle view. Maasai Mara National Reserve, Kenya.

Anup Shah / African elephants (Loxodonta africana) wallowing at a waterhole, wide angle view. Maasai Mara National Reserve, Kenya.

Juergen Freund / Napoleon wrasse (Cheilinus undulatus) adult male with mouth open in yawning behaviour, possibly a form of communication, Great Barrier Reef, Queensland, Australia.

Theo Webb / Antarctic fur seal (Arctocephalus gazella) male resting in a river, South Georgia Island.

Alex Hyde / Wood Anemones (Anemone nemorosa) in flower on woodland floor, low angle fish eye view, Peak District National Park, Derbyshire, UK, May.

Steven Kazlowski / Polar bear (Ursus maritimus) curious subadult along a barrier island in autumn, Beaufort Sea, off the 1002 area of the Arctic National Wildlife Refuge, North Slope, Alaska

Anup Shah / Celebes / Black crested macaque (Macaca nigra) juveniles watching with curiosity while they feed on a banana tree washed up on the beach, Tangkoko National Park, Sulawesi, Indonesia.

Mark Taylor / Playful tabby kitten, Stanley, 6 weeks.

Edwin Giesbers / RF- Alpine marmot (Marmota marmota) reaching upwards, Hohe Tauern National Park, Austria. July. (This image may be licensed either as rights managed or royalty free.)

Edwin Giesbers / RF- Grevy zebra (Equus grevyi) curious head portrait, captive. (This image may be licensed either as rights managed or royalty free.)

Andy Rouse / RF- Black rhinoceros (Diceros bicornis) low angle portrait, Swaziland, Southern Africa. Endangered species. (This image may be licensed either as rights managed or royalty free.)

Doug Perrine / RF- Young Steller's / Steller / Northern Sealions (Eumetopias jubatus) curiously approaching photographer. Glacier Island, Columbia Bay, Alaska, USA. July. (This image may be licensed either as rights...

Peter Cairns / 2020VISION / RF- Mute swan (Cygnus olor) close up peering at camera, juvenile. Fife, Scotland, UK, November. (This image may be licensed either as rights managed or royalty free.)

Wild Wonders of Europe / Widstrand / RF- White stork (Ciconia ciconia) in flight, La Serena, Extremadura, Spain. March. (This image may be licensed either as rights managed or royalty free.)

Ross Hoddinott / RF- Oxeye daisy (Leucanthemum vulgare) fish-eye lens. Devon, UK. June. (This image may be licensed either as rights managed or royalty free.)

Tony Heald / RF- Cape gannets (Sula / Morus capensis) in flight. Lamberts bay, South Africa. (This image may be licensed either as rights managed or royalty free.)