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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.
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.
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.
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.
African leopard (Panthera pardus) female juvenile, drinking at edge of waterhole, South Luangwa National Park, Zambia.
01732594
Bret Charman / African leopard (Panthera pardus) female juvenile, drinking at edge of waterhole, South Luangwa National Park, Zambia.
African leopard (Panthera pardus) female juvenile, head portrait, South Luangwa National Park, Zambia.
01732591
Bret Charman / African leopard (Panthera pardus) female juvenile, head portrait, South Luangwa National Park, Zambia.
African leopard (Panthera pardus) female juvenile, walking over dry grassland, South Luangwa National Park, Zambia.
01732590
Bret Charman / African leopard (Panthera pardus) female juvenile, walking over dry grassland, South Luangwa National Park, Zambia.
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 leopard (Panthera pardus) crossing in front of vehicle headlights, slow motion pan, South Luangwa National Park, Zambia.
01732569
Bret Charman / African leopard (Panthera pardus) crossing in front of vehicle headlights, slow motion pan, South Luangwa National Park, Zambia.
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.
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.
Green-winged trumpeter (Psophia viridis) portrait, Mantenedor da Fauna Silvestre Cariua, Brazil. Captive.
01731885
Joel Sartore / Photo Ark / Green-winged trumpeter (Psophia viridis) portrait, Mantenedor da Fauna Silvestre Cariua, Brazil. Captive.
Green-winged trumpeter (Psophia viridis) portrait, Mantenedor da Fauna Silvestre Cariua, Brazil. Captive.
01731884
Joel Sartore / Photo Ark / Green-winged trumpeter (Psophia viridis) portrait, Mantenedor da Fauna Silvestre Cariua, Brazil. Captive.
Green-winged trumpeter (Psophia viridis) head portrait, Mantenedor da Fauna Silvestre Cariua, Brazil. Captive.
01731883
Joel Sartore / Photo Ark / Green-winged trumpeter (Psophia viridis) head portrait, Mantenedor da Fauna Silvestre Cariua, Brazil. Captive.
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.
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.
Alaotran bamboo lemur (Hapalemur alaotrensis) head portrait, Plzen Zoo. Captive, occurs in Madagascar. Critically endangered.
01731735
Joel Sartore / Photo Ark / Alaotran bamboo lemur (Hapalemur alaotrensis) head portrait, Plzen Zoo. Captive, occurs in Madagascar. Critically endangered.
Alaotran bamboo lemur (Hapalemur alaotrensis) standing on hind legs, portrait, Plzen Zoo. Captive, occurs in Madagascar. Critically endangered.
01731729
Joel Sartore / Photo Ark / Alaotran bamboo lemur (Hapalemur alaotrensis) standing on hind legs, portrait, Plzen Zoo. Captive, occurs in Madagascar. Critically endangered.
White-belted black-and-white ruffed lemur (Varecia variegata subcincta) head portrait, Plzen Zoo. Captive, occurs in Madagascar. Critically endangered.
01731728
Joel Sartore / Photo Ark / White-belted black-and-white ruffed lemur (Varecia variegata subcincta) head portrait, Plzen Zoo. Captive, occurs in Madagascar. Critically endangered.
Indri (Indri indri) female, head portrait, Analamazaotra Forest Station, Andasibe, Madagascar. Captive. Critically endangered.
01731723
Joel Sartore / Photo Ark / Indri (Indri indri) female, head portrait, Analamazaotra Forest Station, Andasibe, Madagascar. Captive. Critically endangered.
Diademed sifaka (Propithecus diadema) gripping on to tree trunk, Lemuria Land, Madagascar. Captive. Critically endangered.
01731716
Joel Sartore / Photo Ark / Diademed sifaka (Propithecus diadema) gripping on to tree trunk, Lemuria Land, Madagascar. Captive. Critically endangered.
Diademed sifaka (Propithecus diadema) gripping on to tree trunk, Lemuria Land, Madagascar. Captive. Critically endangered.
01731715
Joel Sartore / Photo Ark / Diademed sifaka (Propithecus diadema) gripping on to tree trunk, Lemuria Land, Madagascar. Captive. Critically endangered.
Two White-headed brown lemurs (Eulemur albifrons) male and female siblings, female on right, portrait, Naples Zoo. Captive, occurs in Madagascar.
01731714
Joel Sartore / Photo Ark / Two White-headed brown lemurs (Eulemur albifrons) male and female siblings, female on right, portrait, Naples Zoo. Captive, occurs in Madagascar.
White-headed brown lemur (Eulemur albifrons) female, head portrait, Naples Zoo. Captive, occurs in Madagascar.
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Joel Sartore / Photo Ark / White-headed brown lemur (Eulemur albifrons) female, head portrait, Naples Zoo. Captive, occurs in Madagascar.
Red-bellied lemur (Eulemur rubriventer) male, head portrait, Duke Lemur Center. Captive, occurs in Madagascar.
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Joel Sartore / Photo Ark / Red-bellied lemur (Eulemur rubriventer) male, head portrait, Duke Lemur Center. Captive, occurs in Madagascar.
Blue-eyed black lemur (Eulemur flavifrons) male, head portrait, Duke Lemur Center. Captive, occurs in Madagascar. Critically endangered.
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Joel Sartore / Photo Ark / Blue-eyed black lemur (Eulemur flavifrons) male, head portrait, Duke Lemur Center. Captive, occurs in Madagascar. Critically endangered.
Blue-eyed black lemur (Eulemur flavifrons) female, portrait, Duke Lemur Center. Captive, occurs in Madagascar. Critically endangered.
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Joel Sartore / Photo Ark / Blue-eyed black lemur (Eulemur flavifrons) female, portrait, Duke Lemur Center. Captive, occurs in Madagascar. Critically endangered.
Blue-eyed black lemur (Eulemur flavifrons) female, head portrait, Duke Lemur Center. Captive, occurs in Madagascar. Critically endangered.
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Joel Sartore / Photo Ark / Blue-eyed black lemur (Eulemur flavifrons) female, head portrait, Duke Lemur Center. Captive, occurs in Madagascar. Critically endangered.
Black-crowned Central American squirrel monkey (Saimiri oerstedii oerstedii) male, sitting, portrait, Summit Municipal Park, Panama. Captive. Endangered.
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Joel Sartore / Photo Ark / Black-crowned Central American squirrel monkey (Saimiri oerstedii oerstedii) male, sitting, portrait, Summit Municipal Park, Panama. Captive. Endangered.
Black-crowned Central American squirrel monkey (Saimiri oerstedii oerstedii) male, portrait, Summit Municipal Park, Panama. Captive. Endangered.
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Joel Sartore / Photo Ark / Black-crowned Central American squirrel monkey (Saimiri oerstedii oerstedii) male, portrait, Summit Municipal Park, Panama. Captive. Endangered.
Black-crowned Central American squirrel monkey (Saimiri oerstedii oerstedii) male, portrait, Summit Municipal Park, Panama. Captive. Endangered.
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Joel Sartore / Photo Ark / Black-crowned Central American squirrel monkey (Saimiri oerstedii oerstedii) male, portrait, Summit Municipal Park, Panama. Captive. Endangered.