Andy Trowbridge / Arctic Fox (Alopex / Vulpes lagopus) backlit portrait, during moult from grey summer fur to winter white. Dovrefjell National Park, Norway, September.

Andy Trowbridge / Arctic Fox (Alopex / Vulpes lagopus) running along ridge, backlit, during moult from grey summer fur to winter white. Dovrefjell National Park, Norway, September.

Andy Trowbridge / Arctic Fox (Alopex / Vulpes lagopus) at sunset, during moult from grey summer fur to winter white. Dovrefjell National Park, Norway, September.

Jabruson / Angelique Todd with veterinarians during the anaesthesia of 'Blackback' Western Gorilla (Gorilla gorilla) 'Ngobo'. Gorilla anaesthetised by veterinary team in order to remove wire snare from wrist. Mo...

Angelo Gandolfi / Scorched vegetation and rocks after fires during the peak of the dry season, Vale de Lua, Chapada dos Veadeiros National Park, Cerrado region, Goias, Brazil. Fires at the peak of the dry season, Septe...

Charlie Summers / Black Bear (Ursus americanus) hunting for spawning Salmon during low tide, Neets Creek estuary, Alaska, July.

Mark Taylor / Guildford flooded by River Wey at night, during the 2013 Christmas floods. Surrey, England, 25th December 2013. Digitally enhanced image.

David Gallan / Rural Fire Service volunteers staff a road block, waiting for heavy machinery to help clear the road. The surrounding forest was burned during the December 2019 bushfires.

David Gallan / House photographed during a bushfire in Tathra, New South Wales, Australia. The photograph was taken at noon but ash and smoke from the fire darkened the sky and created night time conditions. Badja F...

David Gallan / Bushfire in forest, New South Wales, Australia. The photograph was taken during the day but ash and smoke from the fire darkened the sky and created night time conditions. Badja Fire north of the Bega...

Doug Gimesy / Scientists with anaesthetized Platypus (Ornithorhynchus anatinus) during scientific researchModel released. Snowy River banks, Dalgety, NSW, Australia. September 2017. Model released.

Eric Baccega / Eastern White-bearded Wildebeest (Connochaetes taurinus) herd swimming across Mara river during migration, Masai Mara National Reserve, Kenya.

Eric Baccega / Aerial view of a male Eastern White-bearded Wildebeest (Connochaetes taurinus) chasing spotted hyaena (Crocutta crocutta) during migration time. Masai Mara National Reserve, Kenya.

Eric Baccega / Congestion of game drive cars at one of the popular river crossing spots along the Mara River during the great migration season. Masai Mara National Reserve, Kenya.

Ismaele Tortella / Aurora borealis during polar night, Norway, February 2018

Ismaele Tortella / Aurora borealis during polar night, Norway, February 2018

Doug Gimesy / Sue Swain kissing rescued bush fire victim koala (Phascolarctos cinereus) named 'Sooty'. Sooty was very badly burnt during the Taree bushfires (NSW) in November 2019. His nose, hands, feet and chin we...

Doug Gimesy / Sue Swain with rescued bush fire victim koala (Phascolarctos cinereus) named 'Sooty'. Sooty was very badly burnt during the Taree bushfires (NSW) in November 2019. His nose, hands, feet and chin were...

Doug Gimesy / Sue Swain with rescued bush fire victim koala (Phascolarctos cinereus) named 'Sooty', Sooty was very badly burnt during the Taree bushfires (NSW) in November 2019. His nose, hands, feet and chin were...

Doug Gimesy / Sue Swain looks at the bush fire victim koala (Phascolarctos cinereus) named 'Sooty' who she has just applied burn cream to. 'Sooty' was very badly burnt during the Taree bushfires...

Doug Gimesy / ?Sue Swain gives a bush fire victim koala (Phascolarctos cinereus) named 'Sooty', a dietary supplement in her garage (where she keeps this koala being cared for). ??Sooty' was very badly burnt during...

Doug Gimesy / ?Sue Swain gives a bush fire victim koala (Phascolarctos cinereus) named 'Sooty', a dietary supplement in her garage. '??Sooty' was very badly burnt during the Taree bushfires (NSW) in November 2...

Doug Gimesy / Grey-headed flying-foxes (Pteropus poliocephalus) hang from a branch during a light summer rain shower. Yarra Bend Park, Kew, Victoria, Australia. November.

Doug Gimesy / Grey-headed flying-fox (Pteropus poliocephalus) flying during a very light rain shower with her baby / pup hanging on. Yarra Bend Park, Kew, Victoria, Australia. November.

Doug Gimesy / Grey-headed flying-fox (Pteropus poliocephalus) flying during a very light rain shower. Yarra Bend Park, Kew, Victoria, Australia. November.

Doug Gimesy / During an extreme heat-stress event where temperatures exceeded 40°C, Melbourne Zoo veterinarian Sarah Frith gives in-filed triage to a suffering young and Grey-headed Flying-fox (Pteropus polioce...

Doug Gimesy / Bat rescuer, carer and founder of Fly-by-night bat clinic, Tamsyn Hogarth, comforts a young rescued Grey-headed Flying-fox (Pteropus poliocephalus) that has just been rescued during a heat-stress even...

Doug Gimesy / Bat rescuer, carer and founder of Fly-by-night bat clinic, Tamsyn Hogarth, comforts a young rescued Grey-headed Flying-fox (Pteropus poliocephalus) that has just been rescued during a heat-stress even...

Doug Gimesy / During an extreme heat-stress event where temperatures exceeded 40°C, wildlife rescuer and carer Kate Chamberlain gives in-field triage to a suffering Grey-headed Flying-fox (Pteropus poliocephalu...

Doug Gimesy / During an extreme heat-stress event where temperatures exceeded 40°C at Melbourne's Yarra Bend Grey-headed Flying-fox colony, Melbourne Zoo veterinarian Sarah Frith (right) gives in-filed triage t...

Doug Gimesy / Volunteer bat rescuer Tracy Cleaves, spraying water t to cool down some Grey-headed Flying-foxes (Pteropus poliocephalus) that have descended from the safety of higher branches, in an attempt to escap...

Doug Gimesy / During an extreme heat-stress event at Melbourne's Yarra Bend Grey-headed Flying-fox colony, where temperatures exceeded 40°C, Melbourne Zoo veterinarian Sarah Frith gives in-field triage to a suf...

Doug Gimesy / During an extreme heat-stress event at Melbourne's Yarra Bend Grey-headed Flying-fox colony, where temperatures exceeded 40°C, Melbourne Zoo veterinarian Sarah Frith gives in-field triage to a suf...

Doug Gimesy / During an extreme heat-stress event at Melbourne's Yarra Bend Grey-headed Flying-fox (Pteropus poliocephalus) colony, where temperatures exceeded 40°C, Grey-headed Flying-foxed (Pteropus poliocepha...

Doug Gimesy / 1554 recovered Grey-headed Fly-fox (Pteropus poliocephalus) carcases collected during a heat-stress at event at Melbourne's Yarra Bend Grey-headed Flying-fox colony - about one third of those estimate...

Doug Gimesy / Portrait of 1554 recovered Grey-headed Fly-fox (Pteropus poliocephalus) carcases collected during a heat-stress at event at Melbourne's Yarra Bend Grey-headed Flying-fox colony - about one third of th...

Doug Gimesy / During an extreme heat-stress event at Melbourne's Yarra Bend Grey-headed Flying-fox (Pteropus poliocephalus) colony, where temperatures exceeded 43??in a desperate search for somewhere cooler and les...

Doug Gimesy / During an extreme heat-stress event at Melbourne's Yarra Bend Grey-headed Flying-fox (Pteropus poliocephalus) colony, where temperatures exceeded 43°C, in a desperate search for somewhere cooler a...

Doug Gimesy / During an extreme heat-stress event at Melbourne's Yarra Bend Grey-headed flying-fox (Pteropus poliocephalus) colony, where temperatures exceeded 43°C, Grey-headed flying-fox (Pteropus poliocepha...

Doug Gimesy / During an extreme heat-stress event at Melbourne's Yarra Bend Grey-headed Flying-fox (Pteropus poliocephalus) colony, where temperatures exceeded 43°in a desperate search for somewhere cooler and...

Doug Gimesy / Park Ranger and Grey-headed Flying-fox Project Officer Stephen Brend on his way to get more supplies and coordinate rescue attempts, walks past a wheelbarrow filled with dead Grey-headed Flying-foxes...

Doug Gimesy / Firefighter from Melbourne's Metropolitan Fire Brigade (MBF) try and help cool down the Yarra Bend Grey-headed Flying-fox (Pteropus poliocephalus) colony by spraying water on them. Park Ranger and Gre...

Doug Gimesy / Firefighter from Melbourne's Metropolitan Fire Brigade (MBF) try and help cool down the Yarra Bend Grey-headed Flying-fox (Pteropus poliocephalus) colony by spraying water on them. Park Ranger and...

Doug Gimesy / Firefighters from Melbourne's Metropolitan Fire Brigade (MBF) try and help cool down Melbourne's Yarra Bend Grey-headed flying-fox (Pteropus poliocephalus) colony by spraying water on them. Pa...

Doug Gimesy / Wheelbarrow filled with just some dead Grey-headed flying-foxes (Pteropus poliocephalus) that were collected earlier that day, the result of an extreem heat event at Melbourne's Yarra Bend Grey-headed...

Doug Gimesy / Sprinkler system set up high in the trees at Melbourne's Yarra Bend Grey-headed flying-fox (Pteropus poliocephalus) colony in an attempt to try and keep them cool during an extreme heat event whe...

Doug Gimesy / During an extreme heat-stress event at Melbourne's Yarra Bend Grey-headed flying-fox (Pteropus poliocephalus) colony, where temperatures exceeded 40°C, wildlife rescuer and carer Kate Chamber...

Doug Gimesy / Portrait of a Grey-headed flying-fox (Pteropus poliocephalus) hanging from a branch with wings wrapped around body to help keep dry during a summer rain shower. Yarra Bend Park, Kew, Victoria, Austra...

Doug Gimesy / Portrait of a Grey-headed flying-fox (Pteropus poliocephalus) hanging from a branch with wings wrapped around body to help keep dry during a summer rain shower. Yarra Bend Park, Kew, Victoria, Austr...

Doug Gimesy / Portrait of a Grey-headed flying-fox (Pteropus poliocephalus) hanging from a branch with wings wrapped around body to help keep dry during a summer rain shower. Yarra Bend Park, Kew, Victoria, Austra...

Doug Gimesy / Grey-headed flying-fox (Pteropus poliocephalus) in flight flares wings coming in to land, during a light summer rain shower. Yarra Bend Park, Kew, Victoria, Australia. December.

Bernard Castelein / Cracked ground of dried up fen, during drought. Klein Schietveld, Brasschaat, Belgium. August 2019.

Bernard Castelein / Cracked ground of dried up fen, during drought. Klein Schietveld, Brasschaat, Belgium. August 2019.

Charlie Summers / Eared grebes (Podiceps nigricollis) stand erect in water during courtship, North Park, Colorado, USA. June.

Charlie Summers / Widefield view of the comet 46P / Wirtanen buzzing past the Pleiades during the early morning hours. Echo Lake, Colorado, USA. September 17, 2018.

Alex Mustard / Clearfin lionfish (Pterois radiata) mating. The female (left) has just released a raft of eggs, which is visible between her tail and the red face of the male. Taken around dusk, during the summer in...

Georgette Douwma / Kaleidoscopic image of Basket star (Astroboa nuda) commonly found at night with its rays fully extended into areas of current. It removes plankton from the water column by filter feeding. During the d...

Georgette Douwma / Kaleidoscopic image of Basket star (Astroboa nuda) commonly found at night with its rays fully extended into areas of current. It removes plankton from the water column by filter feeding. During the d...

Franco Banfi / Camp on beach at full moon, in Vrangel Bay where Bowhead whale (Balaena mysticetus) congregate during summer. Primorsky Krai, Russia. August 2019.

Sergio Hanquet / Woman annotating illustrations of Sperm whale (Physeter macrocephalus) during necropsy of dead calf found drifting at sea. Tenerife, Canary Islands. 2010.

David Woodfall / London buses at standstill on bridge during Extinction Rebellion climate change demonstration when five main bridges across River Thames were blocked by protestors. .17 November 2019.

David Woodfall / London buses at standstill on bridge during Extinction Rebellion climate change demonstration when five main bridges across River Thames were blocked by protestors.17 November 2019.

Juan Carlos Munoz / House built during period of Catalan Modernism, Olot, La Garrotxa Natural Park, Girona, Catalonia, Spain. 2019.

Enrique Lopez-Tapia / Men from Wodaabe ethnic group dancing with painted faces and in traditional dress. During Gerewol gathering of different clans women choose a husband. Sahel, Africa. 2019. Digital composite.

Gabriel Rojo / Tree in forest during dry season. Pantanal, Brazil.

Edwin Giesbers / Red deer (Cervus elaphus) silhouetted stag bellowing during rut in grassland, doe in background. Richmond Park, London, England, UK. October

Patricio Robles Gil / Protestors with placards during 'Fridays for the Future' climate change protest. Paseo de la Reforma Avenue, Mexico City, Mexico. September 2019.

Patricio Robles Gil / Young protestors with placards chanting during 'Fridays for the Future' climate change protest. Paseo de la Reforma Avenue, Mexico City, Mexico. September 2019.

Steven David Miller / Spillway diverting water during high flow event. Lake Argyle reservoir, dammed in 1971 for Ord River Irrigation Scheme. The Kimberley, Western Australia. 2017.

Steven David Miller / Spillway diverting water during high flow event. Lake Argyle reservoir, dammed in 1971 for Ord River Irrigation Scheme. The Kimberley, Western Australia. 2017.

Yashpal Rathore / African elephant (Loxodonta africana), young bull walking to forest after drinking, during dust storm. Savuti , Chobe National Park, Botswana

Loic Poidevin / Ruff (Philomachus pugnax), two males in competition during courtship display, at lek. Varanger, Norway. May.

David Tipling / Common toad (Bufo bufo) in pond during breeding season, North Norfolk, England, UK. March.

David Tipling / Common toad (Bufo bufo) three underwater in pond among reeds during breeding season, North Norfolk, England, UK. March.

Tony Wu / Manchurian crane (Grus japonensis) pair in courtship dance during snowstorm. Hokkaido, Japan. March.

Mike Read / Fallow deer (Dama dama) calling to attract does rut. At rutting stand, Brinken Wood, New Forest National Park, Hampshire, England, UK. October.

Rick Price / Zodiac boat with tourists approaching site of waterfalls of King George River, during dry season. Koolama Bay, The Kimberley, Western Australia. July 2015.

Andy Rouse / Bengal tiger (Panthera tigris) cooling in pool during summer heat. Ranthambhore National Park, India.

Andy Rouse / Bengal tiger (Panthera tigris) with mouth open, cooling in pool during summer heat. Ranthambhore National Park, India.

Andy Rouse / Bengal tiger (Panthera tigris) female cooling down in pool during heat of summer. Ranthambhore National Park, India.

Steven David Miller / Superb fairy-wren (Malurus cyaneus) male perched on branch during foraging. Naracoorte Caves National Park, South Australia. February.

Steven David Miller / Humpback whale (Megaptera novaeangliae) breaching during migration. Platypus Bay, Great Sandy Marine Park, Queensland, Australia.

Eric Baccega / Western lowland gorilla (Gorilla gorilla gorilla) female aged 9 years leaving cage during release onto habituation island. Reintroduction from Beauval Zoo through Gorilla Protection Project. Bateke Pl...

Eric Baccega / Western lowland gorilla (Gorilla gorilla gorilla) reintroduction to Bateke Plateau National Park through Gorilla Protection Project. Keeper giving female Gorilla drink through cage during transfer fro...

John Chan / California least tern (Sternula antillarum browni) displaying to attract a female during breeding season, Southern California, USA, June.

Andy Rouse / Male Bengal tiger (Panthera tigris tigris) lying down, resting during courtship, Ranthambore, India.

Gary Bell/ Oceanwide / Coastal rocks during storm, Bay of Fires, Tasmania, Australia

Doug Gimesy / Wildlife rescuers examine the remains of a dead Grey-headed flying-foxes (Pteropus poliocephalus) that was recovered in the field during a heat stress event at the Melbourne colony that day. Yarra Ben...

Doug Gimesy / Grey-headed fying-foxes (Pteropus poliocephalus) fly out over Melbourne city skyline looking for food during a summers sunset. Kew, Victoria, Australia. March 2017.

Doug Gimesy / Rescued Grey-headed flying-fox (Pteropus poliocephalus) recovers in a cage in the shade, having been rescued a few minute earlier by wildlife carers during a heat stress event day at the Melbourne col...

Doug Gimesy / Wildlife bat rescuers Megan Davidson gives a rescued Grey-headed Flying-fox (Pteropus poliocephalus) oral liquids to try and rehydrate it. This was one of many bats rescued at the Melbourne colony dur...

Doug Gimesy / Wildlife rescuers and Parks Victoria officer, Stephen Brend (top right) examine the remains of a dead Grey-headed Flying-foxes (Pteropus poliocephalus) that was recovered in the field during a heat st...

Doug Gimesy / Two Grey-headed Flying-foxes (Pteropus poliocephalus) hanging from a branch using their wings to keep warm and protect its self from the rain during a summer shower. Yarra Bend Park, Kew, Victoria, Au...

Doug Gimesy / Volunteer wildlife career (Olwyn Jones) uses water to try and cool down some Grey-headed Flying-foxes (Pteropus poliocephalus) at the Melbourne flying-fox colony during a heat stress event day. Yarra...

Doug Gimesy / Grey-headed flying-fox (Pteropus poliocephalus) hanging from a branch using its wings to keep warm and protect its self from the rain during a summer shower. Yarra Bend Park, Kew, Victoria, Australia.

Cyril Ruoso / Boy racing young horse during Naadam festival. Great Gobi B Strictly Protected Area, Mongolia. August 2018.