Joel Sartore / Photo Ark / Spotted salamander (Ambystoma maculatum) portrait, Tennessee Aquarium, Chattanooga, Tennessee, USA. Captive.
01743635
Joel Sartore / Photo Ark / Spotted salamander (Ambystoma maculatum) portrait, Zoo Atlanta, Georgia, USA. Captive.
01743634
Joel Sartore / Photo Ark / Spotted salamander (Ambystoma maculatum) portrait, dorsal view, Zoo Atlanta, Georgia, USA. Captive.
01743633
Joel Sartore / Photo Ark / Four Eastern cottontail rabbits (Sylvilagus floridanus similis) juvenile, portrait, Northern Colorado Wildlife Center, Fort Collins, Colorado, USA. Captive.
01743632
Joel Sartore / Photo Ark / Eastern cottontail rabbit (Sylvilagus floridanus similis) portrait, Northern Colorado Wildlife Center, Fort Collins, Colorado, USA. Captive.
01743631
Joel Sartore / Photo Ark / Spotted salamander (Ambystoma maculatum) portrait, Zoo Atlanta, Georgia, USA. Captive.
01743630
Joel Sartore / Photo Ark / Eastern cottontail rabbit (Sylvilagus floridanus floridanus) portrait, from the wild near Vero Beach, Florida, USA.
01743629
Joel Sartore / Photo Ark / Eastern cottontail rabbit (Sylvilagus floridanus floridanus) portrait, from the wild near Vero Beach, Florida, USA.
01743628
Joel Sartore / Photo Ark / Eastern cottontail rabbit (Sylvilagus floridanus mallurus) juvenile, portrait, Carolina Wildlife Center, Columbia, South Carolina, USA. Captive.
01743627
Joel Sartore / Photo Ark / Eastern cottontail rabbit (Sylvilagus floridanus mallurus) juvenile, portrait, Carolina Wildlife Center, Columbia, South Carolina, USA. Captive.
01743626
Joel Sartore / Photo Ark / Three Eastern cottontail rabbits (Sylvilagus floridanus mallurus) juvenile, portrait, Carolina Wildlife Center, Columbia, South Carolina, USA. Captive.
Joel Sartore / Photo Ark / Six-banded armadillo (Euphractus sexcinctus) portrait, Cincinnati Zoo, Ohio. Captive, occurs in South America.
01744632
Joel Sartore / Photo Ark / Desert cottontail rabbit (Sylvilagus audubonii baileyi) portrait, Omaha's Henry Doorly Zoo and Aquarium, Nebraska, USA. Captive.
01744631
Joel Sartore / Photo Ark / Eastern cottontail rabbit (Sylvilagus floridanus floridanus) portrait, from the wild, near Vero Beach, Florida, USA.
01744630
Joel Sartore / Photo Ark / Texas cottontail rabbit (Sylvilagus floridanus alacer) juvenile, portrait, Wildlife Center of Texas, Houston, Texas, USA. Captive.
01744629
Joel Sartore / Photo Ark / American pika (Ochotona princeps) portrait, Niwot Ridge Field Station, Colorado, USA. Captive.
01744628
Joel Sartore / Photo Ark / American pika (Ochotona princeps) portrait, Niwot Ridge Field Station, Colorado, USA. Captive.
01744627
Joel Sartore / Photo Ark / American pika (Ochotona princeps) portrait, Niwot Ridge Field Station, Colorado, USA. Captive.
01744626
Joel Sartore / Photo Ark / Iberian rabbit (Oryctolagus cuniculus algirus) juvenile, portrait, Museum of Natural History and Science, Porto, Portugal. Captive.
01744625
Joel Sartore / Photo Ark / Iberian rabbit (Oryctolagus cuniculus algirus) portrait, Museum of Natural History and Science, Porto, Portugal. Captive.
01744624
Joel Sartore / Photo Ark / Iberian rabbit (Oryctolagus cuniculus algirus) juvenile, portrait, Museum of Natural History and Science, Porto, Portugal. Captive.
01744623
Joel Sartore / Photo Ark / Iberian rabbit (Oryctolagus cuniculus algirus) portrait, Museum of Natural History and Science, Porto, Portugal. Captive.
01744622
Joel Sartore / Photo Ark / Los Angeles Basin brush rabbit (Sylvilagus bachmani cinerascens) portrait, Big Bear Alpine Zoo, California, USA. Captive.
01744621
Joel Sartore / Photo Ark / Riparian brush rabbit (Sylvilagus bachmani riparius) portrait, San Joaquin River National Wildlife Refuge, California, USA. Captive. Federally endangered.
01744620
Joel Sartore / Photo Ark / Riparian brush rabbit (Sylvilagus bachmani riparius) portrait, San Joaquin River National Wildlife Refuge, California, USA. Captive. Federally endangered.
01744619
Joel Sartore / Photo Ark / Riparian brush rabbit (Sylvilagus bachmani riparius) portrait, San Joaquin River National Wildlife Refuge, California, USA. Captive. Federally endangered.
01744618
Joel Sartore / Photo Ark / Western brush rabbit (Sylvilagus bachmani cinerascens) juvenile, portrait, Santa Barbara Wildlife Care Network, California, USA. Captive.
01744617
Joel Sartore / Photo Ark / Fat-tailed dwarf lemur (Cheirogaleus medius) portrait, Plzen Zoo, Czech Republic. Captive, occurs in Madagascar.
01744616
Joel Sartore / Photo Ark / Northern white-cheeked gibbon (Nomascus leucogenys) juvenile, critically endangered, clinging onto its surrogate mother, an endangered Lar gibbon (Hylobates lar) female, Omaha's Henry Doorly Zoo and A...
01744615
Joel Sartore / Photo Ark / Northern white-cheeked gibbon (Nomascus leucogenys) juvenile, with arms raised, portrait, Omaha's Henry Doorly Zoo and Aquarium, Nebraska. Captive, occurs in Southeast Asia. Critically endangered.
01744614
Joel Sartore / Photo Ark / Yellow-cheeked gibbon (Nomascus gabriellae) female, head portrait, Singapore Zoo. Captive, occurs in Southeast Asia. Endangered.
01744613
Joel Sartore / Photo Ark / Northern white-cheeked gibbon (Nomascus leucogenys) juvenile, portrait, Omaha's Henry Doorly Zoo and Aquarium, Nebraska. Captive, occurs in Southeast Asia. Critically endangered.
01744612
Joel Sartore / Photo Ark / Southern yellow cheeked gibbon (Nomascus gabriellae) male, head portrait, Singapore Zoo. Captive, occurs in Southeast Asia. Endangered.
01744611
Joel Sartore / Photo Ark / Von der Decken's sifaka (Propithecus deckenii) sitting, portrait, Lemuria Land, Madagascar. Captive. Critically endangered.
01744610
Joel Sartore / Photo Ark / Von der Decken's sifaka (Propithecus deckenii) head portrait, Lemuria Land, Madagascar. Captive. Critically endangered.
01744609
Joel Sartore / Photo Ark / Coquerel's sifaka (Propithecus coquereli) close up of face, Lemuria Land, Madagascar. Captive. Critically endangered.
01744608
Joel Sartore / Photo Ark / Von der Decken's sifaka (Propithecus deckenii) sitting, portrait, Lemuria Land, Madagascar. Captive. Critically endangered.
01744607
Joel Sartore / Photo Ark / Red ruffed lemur (Varecia rubra) head portrait, Plzen Zoo, Czech Republic. Captive, occurs in Madagascar. Critically endangered.
01744606
Joel Sartore / Photo Ark / Red ruffed lemur (Varecia rubra) head portrait with tongue poking out, Plzen Zoo, Czech Republic. Captive, occurs in Madagascar. Critically endangered.
01744605
Joel Sartore / Photo Ark / Crowned lemur (Eulemur coronatus) female, head portrait, Cleveland Metroparks Zoo, Ohio. Captive, occurs in Madagascar. Endangered.
01744604
Joel Sartore / Photo Ark / Coquerel's sifaka (Propithecus coquereli) portrait, Houston Zoo, Texas. Captive, occurs in Madagascar. Critically endangered.
01744603
Joel Sartore / Photo Ark / Ring-tailed lemur (Lemur catta) walking, portrait, Lincoln Children's Zoo, Nebraska. Captive, occurs in Madagascar. Endangered.
01744602
Joel Sartore / Photo Ark / Eastern lesser bamboo lemur (Hapalemur griseus griseus) head portrait, Duke Lemur Center, North Carolina. Captive, occurs in Madagascar.
Joel Sartore / Photo Ark / Northern white-cheeked gibbon (Nomascus leucogenys) female, portrait, Endangered Primate Rescue Center, Cuc Phuong National Park, Vietnam. Captive. Critically endangered.
01744599
Joel Sartore / Photo Ark / Northern white-cheeked gibbon (Nomascus leucogenys) female, with foot raised to its mouth, portrait, Endangered Primate Rescue Center, Cuc Phuong National Park, Vietnam. Captive. Critically endangered...
01744598
Joel Sartore / Photo Ark / Southern yellow-cheeked gibbon (Nomascus gabriellae) female, head portrait, Endangered Primate Rescue Center, Cuc Phuong National Park, Vietnam. Captive. Endangered.
01744597
Joel Sartore / Photo Ark / Northern white-cheeked gibbon (Nomascus leucogenys) female, head portrait, Gibbon Conservation Center, California. Captive, occurs in Southeast Asia. Critically endangered.
01744542
Joel Sartore / Photo Ark / Orange-spotted grouper (Epinephelus coioides) portrait, Sharjah Aquarium, UAE. Captive, occurs in Indo-Pacific.
01744541
Joel Sartore / Photo Ark / Orange-spotted grouper (Epinephelus coioides) head portrait, Sharjah Aquarium, UAE. Captive, occurs in Indo-Pacific.
01744540
Joel Sartore / Photo Ark / Epaulet grouper (Epinephelus stoliczkae) head portrait, Sharjah Aquarium, UAE. Captive.
Joel Sartore / Photo Ark / Yellowfin hind (Cephalopholis hemistiktos) portrait, Sharjah Aquarium, United Arab Emirates. Captive.
01744537
Joel Sartore / Photo Ark / Yellowfin chromis (Chromis xanthopterygia) portrait, Sharjah Aquarium, United Arab Emirates. Captive.
01744536
Joel Sartore / Photo Ark / Yellowfin chromis (Chromis xanthopterygia) portrait, Sharjah Aquarium, United Arab Emirates. Captive.
01744535
Joel Sartore / Photo Ark / Regal demoiselle (Neopomacentrus cyanomos) portrait, Sharjah Aquarium, United Arab Emirates. Captive.
01744534
Joel Sartore / Photo Ark / Tennessee logperch (Percina apina) male, portrait, from Brush Creek, Lewis County, Tennessee, USA.
01744533
Joel Sartore / Photo Ark / Snowy grouper (Hyporthodus niveatus) head portrait, Indianapolis Zoo, Indiana. Captive, occurs in western Atlantic Ocean.
01744532
Joel Sartore / Photo Ark / Jewel damselfish (Microspathodon chrysurus) portrait, Albuquerque BioPark Aquarium. Captive, occurs in Caribbean Sea.
01744531
Joel Sartore / Photo Ark / Sunshinefish (Chromis insolata) portrait, Albuquerque BioPark Aquarium. Captive, occurs in western Atlantic Ocean.
01744530
Joel Sartore / Photo Ark / Lemon damsel (Pomacentrus moluccensis) portrait, The National Aquarium, Abu Dhabi. Captive, occurs in western Pacific Ocean.
01744529
Joel Sartore / Photo Ark / Coral hind (Cephalopholis miniata) head portrait, Oklahoma Aquarium. Captive, occurs in Indo-Pacific.
01744528
Joel Sartore / Photo Ark / Coral hind (Cephalopholis miniata) portrait, Oklahoma Aquarium. Captive, occurs in Indo-Pacific.
01744527
Joel Sartore / Photo Ark / Coral hind (Cephalopholis miniata) head portrait, Oklahoma Aquarium. Captive, occurs in Indo-Pacific.
01744526
Joel Sartore / Photo Ark / Garibaldi fish (Hypsypops rubicundus) portrait, REEF, University of California, Santa Barbara, California, USA. Captive.
01744525
Joel Sartore / Photo Ark / Garibaldi fish (Hypsypops rubicundus) portrait, REEF, University of California, Santa Barbara, California, USA. Captive.
01744524
Joel Sartore / Photo Ark / Splendid dottyback (Manonichthys splendens) portrait, Pure Aquariums, Nebraska. Captive, occurs in Indo-Pacific.
01744523
Joel Sartore / Photo Ark / Greenfin darter (Nothonotus chlorobranchius) male, portrait, from the South Fork of the Holston River, Virginia. Photographed at the Aquatic Wildlife Conservation Center, Virginia, USA. Captive.
01744522
Joel Sartore / Photo Ark / Greenfin darter (Nothonotus chlorobranchius) male, portrait, from the South Fork of the Holston River, Virginia. Photographed at the Aquatic Wildlife Conservation Center, Virginia, USA. Captive.
01744521
Joel Sartore / Photo Ark / Variegate darter (Etheostoma variatum) male, portrait, from the Lavisa Fork River, Virginia. Photographed at the Aquatic Wildlife Conservation Center, Virginia, USA. Captive.
01744520
Joel Sartore / Photo Ark / Variegate darters (Etheostoma variatum) pair, portrait, from the Lavisa Fork River, Virginia. Female, top. Photographed at the Aquatic Wildlife Conservation Center, Virginia, USA. Captive.
01744519
Joel Sartore / Photo Ark / Variegate darter (Etheostoma variatum) male, portrait, from the Lavisa Fork River, Virginia. Photographed at the Aquatic Wildlife Conservation Center, Virginia, USA. Captive.
01744518
Joel Sartore / Photo Ark / Greenfin darter (Nothonotus chlorobranchius) male, portrait, from the South Fork of the Holston River, Virginia. Photographed at the Aquatic Wildlife Conservation Center, Virginia, USA. Captive.
01744517
Joel Sartore / Photo Ark / Kanawha darter (Etheostoma kanawhae) male, portrait, from the New River drainage, Virginia. Photographed at the Aquatic Wildlife Conservation Center, Virginia, USA. Captive.
01744516
Joel Sartore / Photo Ark / Kanawha darters (Etheostoma kanawhae) pair, portrait, from the New River drainage, Virginia. Male top. Photographed at the Aquatic Wildlife Conservation Center, Virginia, USA. Captive.
01744515
Joel Sartore / Photo Ark / Sharpnose darter (Percina oxyrhynchus) male, portrait, from the New River drainage, Virginia. Photographed at the Aquatic Wildlife Conservation Center, Virginia, USA. Captive.
01744514
Joel Sartore / Photo Ark / Appalachia darter (Percina gymnocephala) male, portrait, from the New River drainage, Virginia. Photographed at the Aquatic Wildlife Conservation Center, Virginia, USA. Captive.
01744513
Joel Sartore / Photo Ark / Duck darter (Etheostoma planasaxatile) portrait, from the Little Duck River, Tennessee, USA.
01744512
Joel Sartore / Photo Ark / Blenny darter (Etheostoma blennius) portrait, from Brush Creek, Lewis County, Tennessee, USA. Captive.
01744511
Joel Sartore / Photo Ark / Saffron darter (Etheostoma flavum) female, portrait, from Brush Creek, Lewis County, Tennessee, USA. Captive.
01744510
Joel Sartore / Photo Ark / Blenny darter (Etheostoma blennius) portrait, from Brush Creek, Lewis County, Tennessee, USA. Captive.
01744509
Joel Sartore / Photo Ark / Buffalo darter (Etheostoma bison) portrait, from Brush Creek, Lewis County, Tennessee, USA. Captive.
01744508
Joel Sartore / Photo Ark / Saffron darter (Etheostoma flavum) male, portrait, from Brush Creek, Lewis County, Tennessee, USA. Captive.
01744507
Joel Sartore / Photo Ark / Fantail darter (Etheostoma flabellare) portrait, from Brush Creek, Lewis County, Tennessee, USA. Captive.