Pal Hermansen / Beaver (Castor fiber) portrait. Trondelag, Norway. May.

Oliver Wright / Marbled white butterfly (Melanargia galathea) photographed in early morning light. Ledston, Yorkshire, June. Focus stacked image.

Oliver Wright / Portrait of a Emerald damselfly (Lestes sponsa) Yorkshire, August. Focus stacked image.

Oliver Wright / Portrait of a Common darter (Sympetrum striolatum) Yorkshire, July. Focus stacked image.

Oliver Wright / Striped Slender Robberfly (Leptogaster cylindrica) Ledston, Yorkshire, July. Focus stacked image.

Alex Mustard / Young female Grey seal (Halichoerus grypus) beneath sunburst. Farne Islands, Northumberland, UK.

Edwin Giesbers / RF - Cockchafer beetle (Melolontha melolontha). France. May. (This image may be licensed either as rights managed or royalty free.)

Edwin Giesbers / RF - White-legged damselfly (Platycnemis pennipes) peering over Oxeye daisy (Leucanthemum vulgare) flower. The Netherlands. August. (This image may be licensed either as rights managed or royalty free...

Andy Rouse / Beautiful Demoiselle damselfly (Calopteryx virgo), male flying, Wales, UK.

Andy Rouse / Beautiful Demoiselle damselfly (Calopteryx virgo), male flying, Wales, UK. Small repro only.

Oscar Dewhurst / Mute swan (Cygnus olor) cygnet swimming. Richmond Park, London, UK. May

Edwin Giesbers / Three Long-eared owls (Asio otus) looking down from a tree in autumn, Wijchen, The Netherlands, December. Birds in their Habitat Category winner, Expos Photos Aves Emotion'Ailes Competition 2020.

Edwin Giesbers / Long-eared owl (Asio otus) looking down from a tree in autumn, Wijchen, The Netherlands, December. Second Prize Winner, Birds in their Environment Category, Bird Photographer of the Year (BPOTY) 2019...

Tony Wu / Japanese dwarf flying squirrel (Pteromys volans orii) male sitting in tree, portrait. Hokkaido, Japan. March

Carol Walker / RF - Percheron horse trotting through snow. Alberta, Canada. Febraury. (This image may be licensed either as rights managed or royalty free.)

Danny Green / Arctic fox (Vulpes lagopus) blue morph, portrait in snow. Hornstrandir Nature Reserve, Iceland, March.

Danny Green / Arctic fox (Vulpes lagopus) cub in meadow, portrait. Hornstrandir Nature Reserve, Iceland, July.

Danny Green / Arctic fox (Vulpes lagopus) cub in meadow, portrait. Hornstrandir Nature Reserve, Iceland, July.

Danny Green / Arctic fox (Vulpes lagopus) walking in heavy snow. Hornstrandir Nature Reserve, Iceland. February.

Danny Green / Arctic fox (Vulpes lagopus) resting in snow. Hornstrandir Nature Reserve, Iceland, February.

Danny Green / Bengal tiger (Panthera tigris tigris) resting on track. Bandhavgarh National Park, India, December.

Danny Green / Bengal tiger (Panthera tigris tigris) male resting in undergrowth, portrait. Bandhavgarh National Park, India, December.

Danny Green / Sea otter (Enhydra lutris) female and pup playing. Alaska, USA, February.

Suzi Eszterhas / Northern muriqui monkey (Brachyteles hypoxanthus) juvenile aged one year, in tree playing with its mother's tail, RPPN Feliciano Miguel Abdala, Atlantic Forest, Brazil. June.

Guy Edwardes / Brown tent-making bats (Uroderma magnirostrum) roosting under a palm leaf, lowland rainforest, Costa Rica. November.

David Hall / Steller sea lions (Eumetopias jubatus) playing underwater, Inian Island, Alaska, USA. August.

John Cancalosi / Portrait of White-tailed deer (Odocoileus virginianus) doe in snow, New York, USA

Richard Sidey / Extreme close-up of a Humpback whale (Megaptera novaeangliae), with eye looking directly at the camera as the whale turns, Antarctic Peninsula.

Shane Gross / Green sea turtle (Chelonia mydas) near the surface in shallow water, Eleuthera, Bahamas.

Shane Gross / Caribbean reef squid (Sepioteuthis sepioidea) portrait at night, Eleuthera, Bahamas.

Karine Aigner / Portrait of a wild male Bobcat (Lynx rufus), Texas, USA. September.

Karine Aigner / Portrait of a wild female Bobcat (Lynx rufus) kitten playing, Texas, USA. September.

Philippe Clement / Leucistic white lions (Panthera leo krugeri) male and juveniles, Captive.

Andres M. Dominguez / Little owl (Athene noctua) perched on sunflower, Cadiz, Andalusia, Spain, July

Andres M. Dominguez / Little owl (Athene noctua) taking shelter from the rain, Arcos de la Frontera, southern Spain. April.

Andres M. Dominguez / Adult male King Eider (Somateria spectabilis).Batsfjord, Norway, March.

Andres M. Dominguez / Golden jackal (Canis aureus) pup sitting on a grassy verge by a path, Danube Delta, Romania, July.

Danny Green / Arctic fox (Alopex lagopus) camouflaged in winter pelage. Svalbard, Norway, April.

Danny Green / Arctic fox (Alopex lagopus) standing in tundra. Svalbard, Norway, July.

Danny Green / Reindeer (Rangifer tarandus), two standing on ridge in blizzard. Svalbard, Norway. April.

Danny Green / Reindeer (Rangifer tarandus) standing on ridge in snow, another reindeer in background. Svalbard, Norway, April.

Danny Green / Reindeer (Rangifer tarandus) walking in snow. Svalbard, Norway, April.

Danny Green / Polar bear (Ursus maritimus) standing on ice. Svalbard, Norway, July.

Danny Green / Polar bear (Ursus maritimus) male in snow. Svalbard, Norway, April.

Danny Green / Arctic fox (Alopex lagopus) standing on ice, in winter pelage. Svalbard, Norway, April.

Danny Green / RF - Arctic fox (Alopex lagopus) in winter pelage, camouflaged in snow. Svalbard, Norway, April (This image may be licensed either as rights managed or royalty free.)

Danny Green / RF - Arctic fox (Alopex lagopus) sitting with summer pelage, tuft of fur on head. Svalbard, Norway, July. (This image may be licensed either as rights managed or royalty free.)

Danny Green / RF - Polar bear (Ursus maritimus) female walking across ice. Svalbard, Norway, April. (This image may be licensed either as rights managed or royalty free.)