Alex Mustard / Sand diver (Synodus intermedius) portrait on a coral reef, Grand Cayman, Cayman Islands, British West Indies, Caribbean Sea.
01332823
Alex Mustard / A male Lined / Northern Seahorse (Hippocampus erectus) beside some coral polyps at night. West Palm Beach, Florida, USA, March.
01737265
Joel Sartore / Photo Ark / Black-chested spinytail iguana (Ctenosaura melanosterna) male, head portrait, IguanaLand, Florida. Captive, occurs in Honduras. Endangered.
01737262
Joel Sartore / Photo Ark / Black-chested spinytail iguana (Ctenosaura melanosterna) male, head portrait, IguanaLand, Florida. Captive, occurs in Honduras. Endangered.
01738473
Joel Sartore / Photo Ark / Golden-collared toucanet (Selenidera reinwardtii langsdorffii) head portrait, Parque de las Leyendas, Lima, Peru. Captive.
01738317
Joel Sartore / Photo Ark / Granite night lizard (Xantusia henshawi) portrait, private collection, Germany. Captive, occurs in North America.
01735303
Joel Sartore / Photo Ark / Indian golden oriole (Oriolus kundoo) male, head portrait, Pinola Conservancy. Captive, occurs in India and Central Asia.
01735219
Joel Sartore / Photo Ark / Javan banded pitta (Hydrornis guajanus) portrait, Bali Bird Park, Indonesia. Captive.
01735209
Joel Sartore / Photo Ark / Northern rockhopper penguin (Eudyptes moseleyi) head portrait, Calgary Zoo, Canada. Captive, occurs in southern Indian and Atlantic Ocean. Endangered.
01735204
Joel Sartore / Photo Ark / Northern rockhopper penguin (Eudyptes moseleyi) head portrait, Calgary Zoo, Canada. Captive, occurs in southern Indian and Atlantic Ocean. Endangered.
01735196
Joel Sartore / Photo Ark / Knobbed hornbill (Rhyticeros cassidix) female, head portrait, Walsrode Bird Park, Germany. Captive, occurs in Indonesia.
01735188
Joel Sartore / Photo Ark / Great hornbill (Buceros bicornis) with mouth open, head portrait, Al Bustan Zoological Centre, UAE. Captive, occurs in South and Southeast Asia.
01737552
Joel Sartore / Photo Ark / Closeup of Mexican burrowing python (Loxocemus bicolor) tasting air with tongue, head portrait, Sedgwick County Zoo, Kansas. Captive, occurs in Central and South America.
01734749
Joel Sartore / Photo Ark / Coachella fringe-toed lizard (Uma inornata) head portrait, private collection, Germany. Captive, occurs in Coachella Valley, California, USA. Endangered.
01734616
Joel Sartore / Photo Ark / Gabon talapoin (Miopithecus ogouensis) head portrait, Wroclaw Zoo. Captive, occurs in West Africa.
01734614
Joel Sartore / Photo Ark / Gabon talapoin (Miopithecus ogouensis) head portrait, Wroclaw Zoo. Captive, occurs in West Africa.
01730818
Joel Sartore / Photo Ark / Great hornbill (Buceros bicornis) head portrait, Houston Zoo. Captive, occurs in India and Southeast Asia.
01717674
Joel Sartore / Photo Ark / Ryukyu box turtle (Cuora flavomarginata evelynae) head portrait, Turtle Survival Center. Captive, occurs in Japan and China. Endangered.
01717673
Joel Sartore / Photo Ark / Ryukyu box turtle (Cuora flavomarginata evelynae) head portrait, Turtle Survival Center. Captive, occurs in Japan and China. Endangered.
01717672
Joel Sartore / Photo Ark / Chinese box turtle (Cuora flavomarginata) head portrait, Turtle Survival Center. Captive, occurs in China and Japan. Endangered.
01717671
Joel Sartore / Photo Ark / Chinese box turtle (Cuora flavomarginata) head portrait, Turtle Survival Center. Captive, occurs in China and Japan. Endangered.
01723799
Joel Sartore / Photo Ark / Bluetail monitor (Varanus doreanus) head portrait, private collection. Captive occurs in Indonesia and Australia.
01723798
Joel Sartore / Photo Ark / Bluetail monitor (Varanus doreanus) head portrait, private collection. Captive occurs in Indonesia and Australia.
01723780
Joel Sartore / Photo Ark / Pygmy mulga monitor (Varanus gilleni) head portrait, Lilydale High School, Victoria, Australia. Captive.
01723779
Joel Sartore / Photo Ark / Pygmy mulga monitor (Varanus gilleni) head portrait, Lilydale High School, Victoria, Australia. Captive.
01723279
Joel Sartore / Photo Ark / Golden gecko (Gekko badenii) head portrait, Wroclaw Zoo. Captive, occurs in Vietnam. Endangered.
01723276
Joel Sartore / Photo Ark / White-lined gecko (Gekko vittatus) head portrait, Wroclaw Zoo. Captive, occurs in Indo-Pacific.
01723273
Joel Sartore / Photo Ark / White-lined gecko (Gekko vittatus) head portrait, Wroclaw Zoo. Captive, occurs in Indo-Pacific.
01723105
Joel Sartore / Photo Ark / Amazon tree boa (Corallus batesii) head portrait, Riverbanks Zoo, South Carolina. Captive, occurs in South America.
01723103
Joel Sartore / Photo Ark / Amazon tree boa (Corallus batesii) head portrait, Riverbanks Zoo, South Carolina. Captive, occurs in South America.
01723080
Joel Sartore / Photo Ark / Common shield-nose snake (Aspidelaps scutatus scutatus) head portrait, Kentucky Reptile Zoo. Captive, occurs in Africa.
01723082
Joel Sartore / Photo Ark / Common shield-nose snake (Aspidelaps scutatus scutatus) head portrait, Kentucky Reptile Zoo. Captive, occurs in Africa.
01723064
Joel Sartore / Photo Ark / Trans-Pecos ratsnake (Bogertophis subocularis) head portrait, Chiricahua Desert Museum, New Mexico, USA. Captive.
01723062
Joel Sartore / Photo Ark / Trans-Pecos ratsnake (Bogertophis subocularis) with tongue out, head portrait, Chiricahua Desert Museum, New Mexico, USA. Captive.
01723692
Joel Sartore / Photo Ark / Baracoa anole (Anolis baracoae) portrait, private collection, USA. Captive, occurs in Cuba.
01701221
Joel Sartore / Photo Ark / Mexican hairy dwarf porcupine (Coendou mexicanus) head portrait, Knoxville Zoo. Captive.
01687928
Philippe Clement / Many-scaled anole (Anolis polylepis) displaying yellow dewlap, Carara National Park, Costa Rica. Central America. Digital composite.