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Grey-headed flying-fox (Pteropus poliocephalus) in flight after dipping into water to cool down and drink, Myuna Wetlands, Doveton, Victoria, Australia.
01733362
Doug Gimesy / Grey-headed flying-fox (Pteropus poliocephalus) in flight after dipping into water to cool down and drink, Myuna Wetlands, Doveton, Victoria, Australia.
Green turtle (Chelonia mydas) resting on seabed feeding on Seagrass (Halophila stipulacea) with a Remora (Echeneis naucrates) on its back and shoals of small fish swimming around, Marsa Alam, Egypt, R...
01733327
Linda Pitkin / Green turtle (Chelonia mydas) resting on seabed feeding on Seagrass (Halophila stipulacea) with a Remora (Echeneis naucrates) on its back and shoals of small fish swimming around, Marsa Alam, Egypt, R...
Bombay night frog (Nyctibatrachus humayuni) egg cluster, with tadpoles visible inside translucent eggs, on leaf, Amboli, Maharastra, India.
01733303
Ripan Biswas / Bombay night frog (Nyctibatrachus humayuni) egg cluster, with tadpoles visible inside translucent eggs, on leaf, Amboli, Maharastra, India.
Green turtles (Chelonia mydas) basking at dusk on beach, probably to kill ectoparasites and seaweed growth on their shells, Maui Island, Hawaii. Endangered.
01733281
Tui De Roy / Green turtles (Chelonia mydas) basking at dusk on beach, probably to kill ectoparasites and seaweed growth on their shells, Maui Island, Hawaii. Endangered.
Green turtle (Chelonia mydas) swimming with school of Barracuda (Sphyraena sp.) behind, Cousins Rock, near Santiago Island, Galapagos Islands. Endangered.
01733279
Tui De Roy / Green turtle (Chelonia mydas) swimming with school of Barracuda (Sphyraena sp.) behind, Cousins Rock, near Santiago Island, Galapagos Islands. Endangered.
Group of Green turtles (Chelonia mydas) basking at sunset, probably to kill ectoparasites and seaweed growth on their shells, Maui Island, Hawaii. Endangered.
01733278
Tui De Roy / Group of Green turtles (Chelonia mydas) basking at sunset, probably to kill ectoparasites and seaweed growth on their shells, Maui Island, Hawaii. Endangered.
Kemp's ridley turtle (Lepidochelys kempii) female, coming ashore to nest in daylight, Rancho Nuevo Beach, Tamaulipas, Mexico. Critically endangered.
01733276
Tui De Roy / Kemp's ridley turtle (Lepidochelys kempii) female, coming ashore to nest in daylight, Rancho Nuevo Beach, Tamaulipas, Mexico. Critically endangered.
Kemp's ridley turtle (Lepidochelys kempii) female, coming ashore to nest in daylight, Rancho Nuevo Beach, Tamaulipas, Mexico. Critically endangered.
01733275
Tui De Roy / Kemp's ridley turtle (Lepidochelys kempii) female, coming ashore to nest in daylight, Rancho Nuevo Beach, Tamaulipas, Mexico. Critically endangered.
Apollo butterflies (Parnassius apollo) roosting, Rhodope Mountains, Bulgaria, June.
01732173
Guy Edwardes / Apollo butterflies (Parnassius apollo) roosting, Rhodope Mountains, Bulgaria, June.
Grandidier's mongoose / Grandidier's vontsira (Galidictis grandidieri) looking around, Al Bustan Zoological Centre. Captive. Endangered.
01729649
Joel Sartore / Photo Ark / Grandidier's mongoose / Grandidier's vontsira (Galidictis grandidieri) looking around, Al Bustan Zoological Centre. Captive. Endangered.
Eastern quoll (Dasyurus viverrinus) lying down and looking at the camera, Zoo Leipzig. Captive. Endangered.
01729648
Joel Sartore / Photo Ark / Eastern quoll (Dasyurus viverrinus) lying down and looking at the camera, Zoo Leipzig. Captive. Endangered.
Proboscis monkey (Nasalis larvatus) male using its hands to pick food up and eat. The animal leaves the frame. Taman Safari Prigen. Captive. Endangered.
01729647
Joel Sartore / Photo Ark / Proboscis monkey (Nasalis larvatus) male using its hands to pick food up and eat. The animal leaves the frame. Taman Safari Prigen. Captive. Endangered.
Hawaiian monk seal (Neomonachus schauinslandi) vocalising. The animal's head appears from bottom of the frame. Minnesota Zoo. Captive. Endangered.
01729646
Joel Sartore / Photo Ark / Hawaiian monk seal (Neomonachus schauinslandi) vocalising. The animal's head appears from bottom of the frame. Minnesota Zoo. Captive. Endangered.
San Bernardino kangaroo rat (Dipodymys merriami parvus) looking at the camera, then the animal partially leaves frame, San Diego Zoo Safari Park, Escondido, California. Captive. Federally endangered.
01729644
Joel Sartore / Photo Ark / San Bernardino kangaroo rat (Dipodymys merriami parvus) looking at the camera, then the animal partially leaves frame, San Diego Zoo Safari Park, Escondido, California. Captive. Federally endangered.
Slender-horned gazelle (Gazella leptoceros) appearing from bottom of frame and looking around, San Diego Zoo Safari Park. Captive. Endangered.
01729643
Joel Sartore / Photo Ark / Slender-horned gazelle (Gazella leptoceros) appearing from bottom of frame and looking around, San Diego Zoo Safari Park. Captive. Endangered.
Okapi (Okapia johnstoni) juvenile male, two months old, flicking a fly off its face with its tongue. Leucistic individual, named 'Mzimu' (meaning ghost in Swahili), Al Bustan Zoological Centre, Sharja...
01729642
Joel Sartore / Photo Ark / Okapi (Okapia johnstoni) juvenile male, two months old, flicking a fly off its face with its tongue. Leucistic individual, named 'Mzimu' (meaning ghost in Swahili), Al Bustan Zoological Centre, Sharja...
Okapi (Okapia johnstoni) juvenile male, two months old, standing and looking around. Leucistic individual, named 'Mzimu' (meaning ghost in Swahili), Al Bustan Zoological Centre, Sharjah. Captive. Enda...
01729641
Joel Sartore / Photo Ark / Okapi (Okapia johnstoni) juvenile male, two months old, standing and looking around. Leucistic individual, named 'Mzimu' (meaning ghost in Swahili), Al Bustan Zoological Centre, Sharjah. Captive. Enda...
Siberian crane (Leucogeranus leucogeranus) female looking around, then the animal lowers its head and ruffles its feathers. International Crane Foundation, Baraboo, Wisconsin. Controlled condiitons. C...
01729610
Joel Sartore / Photo Ark / Siberian crane (Leucogeranus leucogeranus) female looking around, then the animal lowers its head and ruffles its feathers. International Crane Foundation, Baraboo, Wisconsin. Controlled condiitons. C...
Northern bald ibis (Geronticus eremita) looking around, Houston Zoo. Captive. Endangered.
01729609
Joel Sartore / Photo Ark / Northern bald ibis (Geronticus eremita) looking around, Houston Zoo. Captive. Endangered.
Mountain yellow-legged frog (Rana muscosa) looking at the camera, then the animal jumps out of the frame. Oakland Zoo, California. Captive. Endangered.
01729607
Joel Sartore / Photo Ark / Mountain yellow-legged frog (Rana muscosa) looking at the camera, then the animal jumps out of the frame. Oakland Zoo, California. Captive. Endangered.
Northern rockhopper penguin (Eudyptes moseleyi) appearing from the bottom of the frame and then looking around, Calgary Zoo. Captive. Endangered.
01729605
Joel Sartore / Photo Ark / Northern rockhopper penguin (Eudyptes moseleyi) appearing from the bottom of the frame and then looking around, Calgary Zoo. Captive. Endangered.
Southern royal albatross (Diomedea epomophora) in flight over the ocean with the rising full moon in the sky above, Campbell Island, New Zealand Sub Antarctic Islands.
01733222
Russell Laman / Southern royal albatross (Diomedea epomophora) in flight over the ocean with the rising full moon in the sky above, Campbell Island, New Zealand Sub Antarctic Islands.
Three Malagasy sacred ibis (Threskiornis bernieri) perched in tree in mangroves, Betsiboka river, Majunga area, Madagascar. Endangered.
01733217
Lorraine Bennery / Three Malagasy sacred ibis (Threskiornis bernieri) perched in tree in mangroves, Betsiboka river, Majunga area, Madagascar. Endangered.
Chimpanzee (Pan troglodytes) resting in tree, Kibale National Park, Uganda. Endangered.
01733202
Jen Guyton / Chimpanzee (Pan troglodytes) resting in tree, Kibale National Park, Uganda. Endangered.
Chimpanzee (Pan troglodytes) relaxing on forest floor, Kibale National Park, Uganda. Endangered.
01733201
Jen Guyton / Chimpanzee (Pan troglodytes) relaxing on forest floor, Kibale National Park, Uganda. Endangered.
Green turtle (Chelonia mydas) juvenile, swimming in open ocean, with two Pilot fish (Naucrates ductor) and a Remora (Echeneidae) swimming alongside, Eastern Pacific Ocean. Endangered.
01733198
Henley Spiers / Green turtle (Chelonia mydas) juvenile, swimming in open ocean, with two Pilot fish (Naucrates ductor) and a Remora (Echeneidae) swimming alongside, Eastern Pacific Ocean. Endangered.
Lemur leaf frog (Agalychnis lemur) eggs with developing embryos inside. The still developing tadpoles have external gills, visible as tiny branches on the side of the heads. Captive, occurs in South A...
01733189
Emanuele Biggi / Lemur leaf frog (Agalychnis lemur) eggs with developing embryos inside. The still developing tadpoles have external gills, visible as tiny branches on the side of the heads. Captive, occurs in South A...
Polar bear (Ursus maritimus) male, walking across snow covered landscape with mountains in background, Svalbard, Norway. April.
01733167
Danny Green / Polar bear (Ursus maritimus) male, walking across snow covered landscape with mountains in background, Svalbard, Norway. April.
Bengal tiger (Panthera tigris tigris) female juvenile, displaying aggressive behaviour towards its father, Bandhavgarh National Park, India. Endangered.
01733161
Andrew Parkinson / Bengal tiger (Panthera tigris tigris) female juvenile, displaying aggressive behaviour towards its father, Bandhavgarh National Park, India. Endangered.
Bornean orangutan (Pongo pygmaeus) young male climbs up tree trunk in rainforest, Gunung Palung National Park, West Kalimantan, Borneo, Indonesia. Remote camera.  Outright winner Wildlife Photographer...
01732809
Tim Laman / Bornean orangutan (Pongo pygmaeus) young male climbs up tree trunk in rainforest, Gunung Palung National Park, West Kalimantan, Borneo, Indonesia. Remote camera. Outright winner Wildlife Photographer...
Steller's sea eagle (Haliaeetus pelagicus) coming in to land,  Rausu, Hokkaido, Japan.
01732628
Bret Charman / Steller's sea eagle (Haliaeetus pelagicus) coming in to land, Rausu, Hokkaido, Japan.
Two African bush elephants (Loxodonta africana) juvenile males, sparring, Mara Triangle Conservancy, Masai Mara, Kenya. Endangered.
01732624
Bret Charman / Two African bush elephants (Loxodonta africana) juvenile males, sparring, Mara Triangle Conservancy, Masai Mara, Kenya. Endangered.
African wild dog (Lycaon pictus) dragging a dead Impala (Aepyceros melampus) from a shallow pool at the edge of the Luangwa River, South Luangwa National Park, Zambia.
01732604
Bret Charman / African wild dog (Lycaon pictus) dragging a dead Impala (Aepyceros melampus) from a shallow pool at the edge of the Luangwa River, South Luangwa National Park, Zambia.
African wild dog (Lycaon pictus) standing on banks of the Luangwa River, South Luangwa National Park, Zambia.
01732602
Bret Charman / African wild dog (Lycaon pictus) standing on banks of the Luangwa River, South Luangwa National Park, Zambia.
Bengal tiger (Panthera tigris tigris) running through forest, Nagarhole National Park, Karnataka, India. Endangered.
01732584
Bret Charman / Bengal tiger (Panthera tigris tigris) running through forest, Nagarhole National Park, Karnataka, India. Endangered.
Bengal tiger (Panthera tigris tigris) stalking herd of Gaur (Bos gaurus) in forest, Nagarhole National Park, Karnataka, India. Endangered.
01732583
Bret Charman / Bengal tiger (Panthera tigris tigris) stalking herd of Gaur (Bos gaurus) in forest, Nagarhole National Park, Karnataka, India. Endangered.
Forty-spotted pardalote (Pardalotus quadragintus) perched in White gum (Eucalyptus alba) tree, Bruny Island, Tasmania, Australia. Endangered.
01732581
Bret Charman / Forty-spotted pardalote (Pardalotus quadragintus) perched in White gum (Eucalyptus alba) tree, Bruny Island, Tasmania, Australia. Endangered.
Mountain gorilla (Gorilla beringei beringei) infant, resting on forest floor, Bwindi Impenetrable Forest, Uganda. Endangered.
01732570
Bret Charman / Mountain gorilla (Gorilla beringei beringei) infant, resting on forest floor, Bwindi Impenetrable Forest, Uganda. Endangered.
African wild dog (Lycaon pictus) resting, portrait, Mana Pools National Park, Zimbabwe.
01732544
Bret Charman / African wild dog (Lycaon pictus) resting, portrait, Mana Pools National Park, Zimbabwe.
Mauritius fody (Foudia rubra) perched on branch, Ile aux Aigrettes, Mauritius. Critically endangered.
01732532
Bret Charman / Mauritius fody (Foudia rubra) perched on branch, Ile aux Aigrettes, Mauritius. Critically endangered.
African elephant (Loxodonta africana) bull, reaching its trunk into tree canopy to feed on leaves of Sausage tree (Kigelia africana), Mana Pools National Park, Zimbabwe. Endangered.
01732531
Bret Charman / African elephant (Loxodonta africana) bull, reaching its trunk into tree canopy to feed on leaves of Sausage tree (Kigelia africana), Mana Pools National Park, Zimbabwe. Endangered.
Red-crowned cranes (Grus japonensis) flock and three Sika deers (Cervus nippon) wading in river at sunrise in winter,  Hokkaido, Japan. January.
01732524
Bret Charman / Red-crowned cranes (Grus japonensis) flock and three Sika deers (Cervus nippon) wading in river at sunrise in winter, Hokkaido, Japan. January.
Great bustard (Otis tarda tarda) portrait, Tierpark Berlin, Germany. Captive.
01731878
Joel Sartore / Photo Ark / Great bustard (Otis tarda tarda) portrait, Tierpark Berlin, Germany. Captive.
Great bustard (Otis tarda tarda) head portrait, Tierpark Berlin, Germany. Captive.
01731877
Joel Sartore / Photo Ark / Great bustard (Otis tarda tarda) head portrait, Tierpark Berlin, Germany. Captive.
Pigeon mountain salamander (Plethodon petraeus) portrait, Amphibian Foundation, Georgia, USA. Captive.
01731429
Joel Sartore / Photo Ark / Pigeon mountain salamander (Plethodon petraeus) portrait, Amphibian Foundation, Georgia, USA. Captive.
Pigeon mountain salamander (Plethodon petraeus) portrait, Amphibian Foundation, Georgia, USA. Captive.
01731428
Joel Sartore / Photo Ark / Pigeon mountain salamander (Plethodon petraeus) portrait, Amphibian Foundation, Georgia, USA. Captive.
Pigeon mountain salamander (Plethodon petraeus) portrait, Amphibian Foundation, Georgia, USA. Captive.
01731427
Joel Sartore / Photo Ark / Pigeon mountain salamander (Plethodon petraeus) portrait, Amphibian Foundation, Georgia, USA. Captive.
Black-eyed treefrog (Agalychnis moreletii) portrait, National Aquarium, Baltimore. Captive, occurs in Central America.
01731418
Joel Sartore / Photo Ark / Black-eyed treefrog (Agalychnis moreletii) portrait, National Aquarium, Baltimore. Captive, occurs in Central America.
Ankarana sportive lemur (Lepilemur ankaranensis) pair, peering out from tree hole, Analamerana special reserve, Madagascar.
01731054
Bernard Castelein / Ankarana sportive lemur (Lepilemur ankaranensis) pair, peering out from tree hole, Analamerana special reserve, Madagascar.
RF - Dugong (Dugong dugon) swimming back to surface to breathe after feeding on seagrass, accompanied by Golden trevally (Gnathanodon speciosus) juvenile, Marsa Alam, Egypt, Red Sea. (This image may b...
01730588
Franco Banfi / RF - Dugong (Dugong dugon) swimming back to surface to breathe after feeding on seagrass, accompanied by Golden trevally (Gnathanodon speciosus) juvenile, Marsa Alam, Egypt, Red Sea. (This image may b...
Dugong (Dugong dugon) feeding on Seagrass (Halophila stipulacea) meadow accompanied by Golden trevally (Gnathanodon speciosus) juvenile, Marsa Alam, Egypt, Red Sea.
01730565
Franco Banfi / Dugong (Dugong dugon) feeding on Seagrass (Halophila stipulacea) meadow accompanied by Golden trevally (Gnathanodon speciosus) juvenile, Marsa Alam, Egypt, Red Sea.
Green turtle (Chelonia mydas) female, swimming over coral reef with sunburst, Tubbataha Atolls, Palawan, Philippines, Sulu Sea. Endangered.
01728058
Alex Mustard / Green turtle (Chelonia mydas) female, swimming over coral reef with sunburst, Tubbataha Atolls, Palawan, Philippines, Sulu Sea. Endangered.
RF - Green turtle (Chelonia mydas) male, silhouetted in Snell's window with sunburst, Tubbataha Atolls, Palawan, Philippines, Sulu Sea. Endangered. (This image may be licensed either as rights ma...
01727981
Alex Mustard / RF - Green turtle (Chelonia mydas) male, silhouetted in Snell's window with sunburst, Tubbataha Atolls, Palawan, Philippines, Sulu Sea. Endangered. (This image may be licensed either as rights ma...
Polar bear (Ursus maritimus) male, climbing out of the ocean, hunting seals on sea ice, Svalbard, Norway. August.
01727589
Suzi Eszterhas / Polar bear (Ursus maritimus) male, climbing out of the ocean, hunting seals on sea ice, Svalbard, Norway. August.
Polar bear (Ursus maritimus) male, climbing out of the ocean, hunting seal on sea ice, Svalbard, Norway. August.
01727587
Suzi Eszterhas / Polar bear (Ursus maritimus) male, climbing out of the ocean, hunting seal on sea ice, Svalbard, Norway. August.
Brown teal (Anas chlorotis) head portrait, Kiwi Birdlife Park, Queenstown, New Zealand. Captive.
01731855
Joel Sartore / Photo Ark / Brown teal (Anas chlorotis) head portrait, Kiwi Birdlife Park, Queenstown, New Zealand. Captive.
Brown teal (Anas chlorotis) portrait, Kiwi Birdlife Park, Queenstown, New Zealand. Captive.
01731854
Joel Sartore / Photo Ark / Brown teal (Anas chlorotis) portrait, Kiwi Birdlife Park, Queenstown, New Zealand. Captive.
Socotra cormorant (Phalacrocorax nigrogularis) head portrait, Dubai Safari Park, United Arab Emirates. Captive.
01731851
Joel Sartore / Photo Ark / Socotra cormorant (Phalacrocorax nigrogularis) head portrait, Dubai Safari Park, United Arab Emirates. Captive.
Socotra cormorant (Phalacrocorax nigrogularis) portrait, Dubai Safari Park, United Arab Emirates. Captive.
01731850
Joel Sartore / Photo Ark / Socotra cormorant (Phalacrocorax nigrogularis) portrait, Dubai Safari Park, United Arab Emirates. Captive.
Socotra cormorant (Phalacrocorax nigrogularis) head portrait, Dubai Safari Park, United Arab Emirates. Captive.
01731849
Joel Sartore / Photo Ark / Socotra cormorant (Phalacrocorax nigrogularis) head portrait, Dubai Safari Park, United Arab Emirates. Captive.
Sumatran orangutan (Pongo abelii) female, head portrait, Gladys Porter Zoo. Captive, occurs in Sumatra. Critically endangered.
01731787
Joel Sartore / Photo Ark / Sumatran orangutan (Pongo abelii) female, head portrait, Gladys Porter Zoo. Captive, occurs in Sumatra. Critically endangered.
Sumatran orangutan (Pongo abelii) female, head portrait, Gladys Porter Zoo. Captive, occurs in Sumatra. Critically endangered.
01731786
Joel Sartore / Photo Ark / Sumatran orangutan (Pongo abelii) female, head portrait, Gladys Porter Zoo. Captive, occurs in Sumatra. Critically endangered.
Silvery gibbon (Hylobates moloch) juvenile, head portrait, Bali Safari, Indonesia. Captive, occurs in Java. Endangered.
01731785
Joel Sartore / Photo Ark / Silvery gibbon (Hylobates moloch) juvenile, head portrait, Bali Safari, Indonesia. Captive, occurs in Java. Endangered.
Silvery gibbon (Hylobates moloch) juvenile, with finger in mouth, head portrait, Bali Safari, Indonesia. Captive, occurs in Java. Endangered.
01731784
Joel Sartore / Photo Ark / Silvery gibbon (Hylobates moloch) juvenile, with finger in mouth, head portrait, Bali Safari, Indonesia. Captive, occurs in Java. Endangered.
Silvery gibbon (Hylobates moloch) juvenile, portrait, Bali Safari, Indonesia. Captive, occurs in Java. Endangered.
01731783
Joel Sartore / Photo Ark / Silvery gibbon (Hylobates moloch) juvenile, portrait, Bali Safari, Indonesia. Captive, occurs in Java. Endangered.
Silvery gibbon (Hylobates moloch) juvenile, head portrait, Bali Safari, Indonesia. Captive, occurs in Java. Endangered.
01731782
Joel Sartore / Photo Ark / Silvery gibbon (Hylobates moloch) juvenile, head portrait, Bali Safari, Indonesia. Captive, occurs in Java. Endangered.
Silvery gibbon (Hylobates moloch) juvenile, portrait, Bali Safari, Indonesia. Captive, occurs in Java. Endangered.
01731781
Joel Sartore / Photo Ark / Silvery gibbon (Hylobates moloch) juvenile, portrait, Bali Safari, Indonesia. Captive, occurs in Java. Endangered.
Silvery gibbon (Hylobates moloch) portrait, Taman Safari, West Java, Indonesia. Captive. Endangered.
01731780
Joel Sartore / Photo Ark / Silvery gibbon (Hylobates moloch) portrait, Taman Safari, West Java, Indonesia. Captive. Endangered.
Bonobo (Pan paniscus) head portrait, Ape Cognition and Conservation Initiative (ACCI), Iowa. Captive, occurs in Central Africa. Endangered.
01731779
Joel Sartore / Photo Ark / Bonobo (Pan paniscus) head portrait, Ape Cognition and Conservation Initiative (ACCI), Iowa. Captive, occurs in Central Africa. Endangered.
Bonobo (Pan paniscus) head portrait, Ape Cognition and Conservation Initiative (ACCI), Iowa. Captive, occurs in Central Africa. Endangered.
01731778
Joel Sartore / Photo Ark / Bonobo (Pan paniscus) head portrait, Ape Cognition and Conservation Initiative (ACCI), Iowa. Captive, occurs in Central Africa. Endangered.
Bonobo (Pan paniscus) scratching its ear, head portrait, Ape Cognition and Conservation Initiative (ACCI), Iowa. Captive, occurs in Central Africa. Endangered.
01731777
Joel Sartore / Photo Ark / Bonobo (Pan paniscus) scratching its ear, head portrait, Ape Cognition and Conservation Initiative (ACCI), Iowa. Captive, occurs in Central Africa. Endangered.
Bonobo (Pan paniscus) head portrait, Ape Cognition and Conservation Initiative (ACCI), Iowa. Captive, occurs in Central Africa. Endangered.
01731776
Joel Sartore / Photo Ark / Bonobo (Pan paniscus) head portrait, Ape Cognition and Conservation Initiative (ACCI), Iowa. Captive, occurs in Central Africa. Endangered.
Bonobo (Pan paniscus) sitting, portrait, Ape Cognition and Conservation Initiative (ACCI), Iowa. Captive, occurs in Central Africa. Endangered.
01731775
Joel Sartore / Photo Ark / Bonobo (Pan paniscus) sitting, portrait, Ape Cognition and Conservation Initiative (ACCI), Iowa. Captive, occurs in Central Africa. Endangered.
Cross River gorilla (Gorilla gorilla diehli) aged 27 years, head portrait, Limbe Wildlife Center, Cameroon. Captive. Critically endangered.
01731774
Joel Sartore / Photo Ark / Cross River gorilla (Gorilla gorilla diehli) aged 27 years, head portrait, Limbe Wildlife Center, Cameroon. Captive. Critically endangered.
Cross River gorilla (Gorilla gorilla diehli) aged 27 years, head portrait, Limbe Wildlife Center, Cameroon. Captive. Critically endangered.
01731773
Joel Sartore / Photo Ark / Cross River gorilla (Gorilla gorilla diehli) aged 27 years, head portrait, Limbe Wildlife Center, Cameroon. Captive. Critically endangered.
Cross River gorilla (Gorilla gorilla diehli) aged 27 years, head portrait, Limbe Wildlife Center, Cameroon. Captive. Critically endangered.
01731772
Joel Sartore / Photo Ark / Cross River gorilla (Gorilla gorilla diehli) aged 27 years, head portrait, Limbe Wildlife Center, Cameroon. Captive. Critically endangered.
Cross River gorilla (Gorilla gorilla diehli) aged 27 years, portrait, Limbe Wildlife Center, Cameroon. Captive. Critically endangered.
01731771
Joel Sartore / Photo Ark / Cross River gorilla (Gorilla gorilla diehli) aged 27 years, portrait, Limbe Wildlife Center, Cameroon. Captive. Critically endangered.
Cross River gorilla (Gorilla gorilla diehli) aged 27 years, head portrait, Limbe Wildlife Center, Cameroon. Captive. Critically endangered.
01731770
Joel Sartore / Photo Ark / Cross River gorilla (Gorilla gorilla diehli) aged 27 years, head portrait, Limbe Wildlife Center, Cameroon. Captive. Critically endangered.
Bornean orangutan (Pongo pygmaeus) infant, aged 11 months, portrait, Taman Safari, West Java. Captive, occurs in Borneo. Critically endangered.
01731767
Joel Sartore / Photo Ark / Bornean orangutan (Pongo pygmaeus) infant, aged 11 months, portrait, Taman Safari, West Java. Captive, occurs in Borneo. Critically endangered.
Sumatran orangutan (Pongo abelii) infant aged 11 months, portrait, Taman Safari, West Java. Captive, occurs in Sumatra. Critically endangered.
01731766
Joel Sartore / Photo Ark / Sumatran orangutan (Pongo abelii) infant aged 11 months, portrait, Taman Safari, West Java. Captive, occurs in Sumatra. Critically endangered.
Sumatran orangutan (Pongo abelii) infant aged 11 months, portrait, Taman Safari, West Java. Captive, occurs in Sumatra. Critically endangered.
01731765
Joel Sartore / Photo Ark / Sumatran orangutan (Pongo abelii) infant aged 11 months, portrait, Taman Safari, West Java. Captive, occurs in Sumatra. Critically endangered.
Sumatran orangutan (Pongo abelii) infant aged 11 months, portrait, Taman Safari, West Java. Captive, occurs in Sumatra. Critically endangered.
01731764
Joel Sartore / Photo Ark / Sumatran orangutan (Pongo abelii) infant aged 11 months, portrait, Taman Safari, West Java. Captive, occurs in Sumatra. Critically endangered.
Sumatran orangutan (Pongo abelii) infant aged 11 months, and Bornean orangutan (Pongo pygmaeus) infant aged 11 months, hugging, Taman Safari, West Java, Indonesia. Captive. Critically endangered.
01731763
Joel Sartore / Photo Ark / Sumatran orangutan (Pongo abelii) infant aged 11 months, and Bornean orangutan (Pongo pygmaeus) infant aged 11 months, hugging, Taman Safari, West Java, Indonesia. Captive. Critically endangered.
Sumatran orangutan (Pongo abelii) infant aged 11 months, and Bornean orangutan (Pongo pygmaeus) infant aged 11 months, hugging, Taman Safari, West Java, Indonesia. Captive. Critically endangered.
01731762
Joel Sartore / Photo Ark / Sumatran orangutan (Pongo abelii) infant aged 11 months, and Bornean orangutan (Pongo pygmaeus) infant aged 11 months, hugging, Taman Safari, West Java, Indonesia. Captive. Critically endangered.
Sumatran orangutan (Pongo abelii) infant aged 11 months, and Bornean orangutan (Pongo pygmaeus) infant aged 11 months, hugging, Taman Safari, West Java, Indonesia. Captive. Critically endangered.
01731761
Joel Sartore / Photo Ark / Sumatran orangutan (Pongo abelii) infant aged 11 months, and Bornean orangutan (Pongo pygmaeus) infant aged 11 months, hugging, Taman Safari, West Java, Indonesia. Captive. Critically endangered.
Central Bornean orangutan (Pongo pygmaeus wurmbii) head portrait, Avilon Wildlife Conservation Foundation. Captive, occurs in Borneo. Critically endangered.
01731760
Joel Sartore / Photo Ark / Central Bornean orangutan (Pongo pygmaeus wurmbii) head portrait, Avilon Wildlife Conservation Foundation. Captive, occurs in Borneo. Critically endangered.
Central Bornean orangutan (Pongo pygmaeus wurmbii) portrait, Avilon Wildlife Conservation Foundation. Captive, occurs in Borneo. Critically endangered.
01731759
Joel Sartore / Photo Ark / Central Bornean orangutan (Pongo pygmaeus wurmbii) portrait, Avilon Wildlife Conservation Foundation. Captive, occurs in Borneo. Critically endangered.
Central Bornean orangutan (Pongo pygmaeus wurmbii) head portrait, Avilon Wildlife Conservation Foundation. Captive, occurs in Borneo. Critically endangered.
01731758
Joel Sartore / Photo Ark / Central Bornean orangutan (Pongo pygmaeus wurmbii) head portrait, Avilon Wildlife Conservation Foundation. Captive, occurs in Borneo. Critically endangered.
Northern yellow-cheeked gibbon (Nomascus annamensis) male, portrait, Endangered Primate Rescue Center, Vietnam. Captive. Endangered.
01731750
Joel Sartore / Photo Ark / Northern yellow-cheeked gibbon (Nomascus annamensis) male, portrait, Endangered Primate Rescue Center, Vietnam. Captive. Endangered.
Siamang (Symphalangus syndactylus) head portrait, Los Angeles Zoo. Captive, occurs in Southeast Asia. Endangered.
01731749
Joel Sartore / Photo Ark / Siamang (Symphalangus syndactylus) head portrait, Los Angeles Zoo. Captive, occurs in Southeast Asia. Endangered.
Southern white-cheeked gibbon (Nomascus siki) male, head portrait, Endangered Primate Rescue Center, Vietnam. Captive. Endangered.
01731748
Joel Sartore / Photo Ark / Southern white-cheeked gibbon (Nomascus siki) male, head portrait, Endangered Primate Rescue Center, Vietnam. Captive. Endangered.
Chimpanzee (Pan troglodytes) male infant, aged 3 months, reaching out, portrait, Tampa's Lowry Park Zoo. Captive, occurs in Africa. Endangered.
01731747
Joel Sartore / Photo Ark / Chimpanzee (Pan troglodytes) male infant, aged 3 months, reaching out, portrait, Tampa's Lowry Park Zoo. Captive, occurs in Africa. Endangered.
Chimpanzee (Pan troglodytes) male infant, aged 3 months, reaching out, portrait, Tampa's Lowry Park Zoo. Captive, occurs in Africa. Endangered.
01731746
Joel Sartore / Photo Ark / Chimpanzee (Pan troglodytes) male infant, aged 3 months, reaching out, portrait, Tampa's Lowry Park Zoo. Captive, occurs in Africa. Endangered.
Golden-bellied capuchin (Cebus xanthosternos) portrait, Lisbon Zoo. Captive, occurs in Brazil. Critically endangered.
01731739
Joel Sartore / Photo Ark / Golden-bellied capuchin (Cebus xanthosternos) portrait, Lisbon Zoo. Captive, occurs in Brazil. Critically endangered.
Grey mouse lemur (Microcebus ganzhorni) standing on hind legs, portrait, Plzen Zoo. Captive, occurs in Madagascar. Endangered.
01731737
Joel Sartore / Photo Ark / Grey mouse lemur (Microcebus ganzhorni) standing on hind legs, portrait, Plzen Zoo. Captive, occurs in Madagascar. Endangered.
Grey mouse lemur (Microcebus ganzhorni) portrait, Plzen Zoo. Captive, occurs in Madagascar. Endangered.
01731736
Joel Sartore / Photo Ark / Grey mouse lemur (Microcebus ganzhorni) portrait, Plzen Zoo. Captive, occurs in Madagascar. Endangered.