Hermann Brehm / Cuckoo (Cuculus canorus) in flight, Germany, April. May

Bence Mate / European rabbits (Oryctolagus cuniculus) fighting each other, Kiskunsag National Park, Hungary. June. Winner, 2019 Cadiz Photo Nature Competition.

Sergio Hanquet / Arrow crab (Sternorhynchus lanceolatus). Tenerife, Canary Islands.

Sergio Hanquet / Green sea turtle (Chelonia mydas), two viewed from above. Tenerife, Canary Islands.

Danny Green / Polar bear (Ursus maritimus) walking across sea ice, reflected in water. Svalbard, Norway, July.

Danny Green / Polar bear (Ursus maritimus) female and cubs, one cub walking up slope of ice in foreground. Svalbard, Norway, July.

Danny Green / Polar bear (Ursus maritimus) walking across ice, snow covered mountain in background. Svalbard, Norway, April 2018.

Danny Green / Polar bear (Ursus maritimus) resting in snow. Svalbard, Norway, July.

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

Danny Green / Reindeer (Rangifer tarandus), two play fighting in snow. Svalbard, Norway, April.

Danny Green / Polar bear (Ursus maritimus) two walking in snowy landscape. Svalbard, Norway, April 2018.

Danny Green / Polar bear (Ursus maritimus) male female pair looking upwards, snow covered hills in background. Svalbard, Norway, April 2018.

Danny Green / Polar bear (Ursus maritimus) resting on sea ice, view from above. Svalbard, Norway, June 2018.

Danny Green / Polar bear (Ursus maritimus), two cubs playing, leaping across sea ice, reflected in water. Svalbard, Norway, July.

Danny Green / Polar bear (Ursus maritimus), two cubs walking on sea ice. Svalbard, Norway, July.

Danny Green / Polar bear (Ursus maritimus) cub ready to jump down from pack ice. Svalbard, Norway, April.

Nick Garbutt / Black-browed albatross (Thalassarche melanophris) flying over South Atlantic. Cooper Bay, South Georgia. November.

Nick Garbutt / Puma (Puma concolor puma) young male standing with mouth open. Estancia Amarga, near Torres del Paine National Park, Patagonia, Chile. December.

Nick Garbutt / Western red panda (Ailurus fulgens fulgens) climbing in tree. Singalila National Park, India / Nepal border.

Nick Garbutt / American bison (Bison bison) female covered in hoar frost near hot spring, portrait. Midway Geyser Basin, Yellowstone National Park, USA. February.

Ann & Steve Toon / Cheetah (Acinonyx jubatus) walking, silhouetted at dusk. Zimanga private game reserve, KwaZulu-Natal, South Africa.

Ann & Steve Toon / African elephants (Loxodonta africana) herd silhouetted at sunset. Chobe National Park, Botswana.

Ann & Steve Toon / Ostrich (Struthio camelus) silhouetted in dust storm. Kalahari Gemsbok National Park, Kgalagadi Transfrontier National Park, Northern Cape, South Africa. Commended in the Bird Photographer of the Year...

Will Burrard-Lucas / White rhino (Ceratotherium simum), portrait. Solio Game Reserve, Solio Ranch, Kenya. Taken with remote camera buggy / BeetleCam. EDITORIAL USE ONLY. All other uses require clearance

Alex Mustard / Southern stingray (Dasyatis americana) two swimming over sand bar, under stormy sky. Grand Cayman, Cayman Islands. British West Indies.

Sergio Hanquet / Loggerhead turtle (Caretta caretta) tangled in fishing net. Tenerife, Canary Islands. 2019.

Alex Mustard / Dugong (Dugong dugon) male and juvenile Golden trevally (Gnathanodon speciosus) swimming over Seagrass (Halophila stipulacea) meadow. Marsa Nabaa, Marsa Alam, Egypt.

Alex Mustard / Spinner dolphin (Stenella longirostris) pod socialising close to surface. Fury Shoal, Sataya Reef, Marsa Alam, Egypt.

Alex Mustard / Oceanic whitetip shark (Carcharhinus longimanus) swimming close to surface. Brothers Islands, Egypt.

Oscar Dewhurst / Mute swan (Cygnus olor), two cygnets sheltering under parent's wing. Richmond Park, London, England, UK. April.

Oscar Dewhurst / Mute swan (Cygnus olor) swimming with cygnets in misty lake in morning light. Richmond Park, London, England, UK. May.

Shane Gross / Flying fish (Exocoetidae) in Sargasso Sea, Atlantic Ocean.

Guy Edwardes / Barn owl (Tyto alba) in flight above post and wildflowers, in morning light. The Hawk Conservancy Trust, Hampshire, England, UK. July. Captive.

Guy Edwardes / Dalmatian pelican (Pelecanus crispus), portrait. Lake Kerkini, Sintik, Greece. January.

Claudio Contreras / California condor (Gymnogyps californianus), portrait. California condor recovery program, Sierra de San Pedro Martir National Park, Baja California Peninsula, Mexico.

Claudio Contreras / California condor (Gymnogyps californianus), two perched in tree, adult and juvenile. California condor recovery program, Sierra de San Pedro Martir National Park, Baja California Peninsula, Mexico.

David Tipling / Grey seal (Halichoerus grypus) female in surf, Horsey, Norfolk, England, UK, February.

David Tipling / Grey seal (Halichoerus grypus) pup, Horsey, Norfolk, England, UK, February.

Tony Wu / Humpback whale (Megaptera novaeangliae australis) male calf playing at ocean surface after coming up to breathe. Vava'u Islands, Tonga.

Ann & Steve Toon / Meerkats (Suricata suricatta) on the move, Kgalagadi Transfrontier Park, Northern Cape, South Africa, January. Second place in the Mammals Category of the GDT European Nature Photographer of the Year...

Fabio Pupin / Meadow viper, (Vipera ursinii), basking in alpine meadow, Apennines, Italy, September . Non-ex.

Fabio Pupin / Peringuey's desert adder, (Bitis peringueyi), sidewinding on dune, Namib desert, Namibia, February . Non-ex.

Jack Dykinga / Burrowing owl (Athene cunicularia) female and ten chicks aged a few weeks. Marana, Arizona, USA. May.

Andy Rouse / Bengal tiger (Panthera tigris) male, sub-adult aged three years, face portrait. Ranthambhore National Park, India.

Shane Gross / Caribbean reef shark (Carcharhinus perezi), two from below, one close up. Caribbean Sea off Gardens of the Queen National Park, Cuba.

Doug Gimesy / Little blue penguin (Eudyptula minor), two standing on rocks at night, silhouetted against Melbourne city lights. St Kilda breakwater, Victoria, Australia. December 2016. COP26 Countdown Photo Competi...

Tony Heald / Glaucous Gull (Larus hyperboreus) taking off from ice, Svalbard Norway, July.

George Sanker / Great egret (Ardea alba) with prey in beak, in evening light. Myakka River State Park, Florida, USA, March. Sequence 2/2.

George Sanker / Great egret (Ardea alba) diving head into water to catch prey, in evening light. Myakka River State Park, Florida, USA, March. Sequence 1/2.

Tony Heald / Elephant (Loxodonta africana) babies playing, Etosha National Park,Namibia.

Cyril Ruoso / Ringed-tailed lemur (Lemur catta) amongst granite rocks in cave. Lemurs lick minerals from the rocks. Anja Community Reserve, Madagascar.

Staffan Widstrand / African bush elephant, (Loxodonta africana) two head to head playing, Zimanga Private Nature Reserve, KwaZulu Natal, South Africa

Staffan Widstrand / Tawny eagle (Aquila rapax) in flight, about to land, Zimanga Private Nature Reserve, KwaZulu Natal, South Africa

Sven Zacek / Ural owl (Strix uralensis) hunting, Tartumaa county, Southern Estonia.

Oscar Dewhurst / Hoatzin (Ophisthocomus hoazin) perched on wooden bar overlooking oxbow lake. Manu National Park, Madre de Dios, Peru. September

Sven Zacek / Ural owl (Strix uralensis) in flight, hunting, Tartumaa county, Southern Estonia. February.

Bernard Castelein / Coquerel's sifaka (Propithecus coquereli) in tree, relaxing, Ankarafantsika National Park, Madagascar

Bernard Castelein / Silky sifaka (Propithecus candidus) in tree, Marojejy National Park, Madagascar. Critically endagered species.

Heather Angel / Giant panda (Ailuropoda melanoleuca) portrait, in falling snow. Captive bred, in enclosure, Panda Breeding Centre, Wolong, Sichuan Province, China. February 2008.

Oscar Dewhurst / Fallow deer (Dama dama) walking across frost-covered playing fields at dawn, with tower blocks of London in the background. Richmond Park, London, UK. December

Oscar Dewhurst / Red deer (Cervus elaphus) stag roaring, silhouetted under trees at sunrise. Bushy Park, London, UK. September

Andy Rouse / Bengal Tiger (Panthera tigris) family drinking from pool, Ranthambhore, India

Doug Perrine / Dugong or Sea cow (Dugong dugon) split level view, Calauit Island, off Busuanga, Calamian Islands, Palawan, Philippines.

Jack Dykinga / Bighorm sheep (Ovis canadensis) males grouped together before the rutting season. Valley of Fire State Park, Nevada, USA, February.

Jordi Chias / Wandering albatross (Diomedea exulans) flying on the open ocean, Drake passage, Antarctic Peninsula, Antarctica.

Jordi Chias / Humpback whale (Megaptera novaeangliae), Antarctic Peninsula, Antarctica.

Jordi Chias / Antarctic fur seal (Arctocephalus gazella), Antarctic Peninsula, Antarctica.

Jordi Chias / Leopard seal (Hydrurga leptonyx) resting over an iceberg, Antarctic Peninsula, Antarctica.

Jordi Chias / Crabeater seal (Lobodon carcinophaga) hunting under water, Antarctic Peninsula, Antarctica.

Jordi Chias / Antarctic fur seal (Arctocephalus gazella), Antarctic Peninsula, Antarctica.

Jordi Chias / Gentoo penguins (Pygoscelis papua) swimming together and porpoising in search of krill, Antarctic Peninsula, Antarctica.

Jordi Chias / Gentoo penguins (Pygoscelis papua) walking in line, returning to nesting area, Port Charcot, Antarctic Peninsula, Antarctica.

Jordi Chias / Weddell seal (Leptonychotes weddellii) hauled out on ice, Antarctic Peninsula, Antarctica.

Jordi Chias / Gentoo penguins (Pygoscelis papua) walking in line, returning to nesting area, Port Charcot, Antarctic Peninsula, Antarctica.

Jordi Chias / Humpback whale (Megaptera novaeangliae) spyhoping, Antarctic Peninsula, Antarctica.

Jordi Chias / Humpback whale (Megaptera novaeangliae) surfacing with baby and blowing, Antarctic Peninsula, Antarctica.

Doug Gimesy / Koala (Phascolarctos cinereus) that has come down from a tree after a bush fire in the area, sits on the burnt ground. Gelantipy, Victoria, Australia. January 2020 Non-ex.

Doug Gimesy / Koala (Phascolarctos cinereus) that has been captured for a health check following bush fires in the area, in crate prior to transport to the Bairnsdale wildlife triage centre, set up following the...

Eric Baccega / Eastern White-bearded Wildebeest herd (Connochaetes taurinus) crossing the Mara River. Masai Mara National Reserve, Kenya.

Eric Baccega / Eastern White-bearded Wildebeest (Connochaetes taurinus) jumping into Mara river on migration, Masai Mara National Reserve, Kenya.

Eric Baccega / Eastern White-bearded Wildebeest (Connochaetes taurinus) herd swimming across Mara river through the eye of an adult, Masai Mara National Reserve, Kenya.

Eric Baccega / Eastern White-bearded Wildebeest (Connochaetes taurinus) migrating herds, Masai Mara National Reserve, Kenya.

Eric Baccega / Eastern White-bearded Wildebeest herd (Connochaetes taurinus) crossing the Mara River. Masai Mara National Reserve, Kenya.

Eric Baccega / Eastern White-bearded Wildebeest herd (Connochaetes taurinus) climbing bank after crossing river. Masai Mara National Reserve, Kenya.

Eric Baccega / Eastern White-bearded Wildebeest herd (Connochaetes taurinus) climbing bank after crossing river. Masai Mara National Reserve, Kenya.

Espen Bergersen / Northern fulmar (Fulmarus glacialis) in front of the Seljalandsfoss waterfall, Iceland. May

Espen Bergersen / Northern fulmars (Fulmarus glacialis) in flight over river, Iceland, May.

Espen Bergersen / Common Loon (Gavia immer) flapping wings in water, Iceland, May.

Espen Bergersen / Harlequin duck (Histrionicus histrionicus) in river stream. Myvatn, Iceland. May.

Espen Bergersen / Harlequin duck (Histrionicus histrionicus) Jokulsarlon lake. Iceland 2016

Espen Bergersen / Common eider (Somateria mollissima) performing courtship postures between ice bergs in the Jokulsarlon Lake, Iceland. May.

Anup Shah / Eastern chimpanzee (Pan troglodytes schweinfurtheii) juvenile male 'Gimli' aged 10 years with wodges of fruit he is feeding on . Gombe National Park, Tanzania. May 2014.

Anup Shah / Eastern chimpanzee (Pan troglodytes schweinfurtheii) males knuckle walking along the shore of Lake Tanganyika . Gombe National Park, Tanzania. May 2014.

Anup Shah / Eastern chimpanzee (Pan troglodytes schweinfurtheii) juvenile male 'Gimli' aged 10 years using stick to try and get at insects he can hear inside rotting log. Gombe National Park, Tanzania.

Anup Shah / Eastern chimpanzee (Pan troglodytes schweinfurtheii) infant male 'Gizmo' aged 4 years portrait . Gombe National Park, Tanzania. May 2014.

Anup Shah / Eastern chimpanzee (Pan troglodytes schweinfurtheii) infant make 'Google' aged 5 years being groomed . Gombe National Park, Tanzania. September 2014.