Andres M. Dominguez / Eurasian kingfisher (Alcedo atthis) male, perched on branch over pond with tadpole prey in beak, backlit at dawn, Sierra de Grazalema Natural Park, Cadiz, Spain. October.
01733366
Andres M. Dominguez / Eurasian kingfisher (Alcedo atthis) male, perched on a rock in pool, backlit at dawn, Sierra de Grazalema Natural Park, Cadiz, Spain. October.
01733364
Dr. Axel Gebauer / Aerial view of Red deer (Cervus elaphus) walking through pond with Water caltrop (Trapa natans) and blue bacteria, surrounded by Reedbeds (Phragmites australis), Biosphere Reserve, Upper Lusatia, Pola...
01733363
Ann & Steve Toon / Three Giraffes (Giraffa camelopardalis) silhouetted at sunset, Chobe National Park, Botswana.
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.
01733361
Doug Gimesy / Little pied cormorant (Microcarbo melanoleucos) standing on intertidal rocks, feeding on fish prey, Port Philip Bay, Victoria, Australia.
01733360
Gabriel Rojo / Geoffroy's cat (Leopardus geoffroyi) walking past seaweed covered rocks on beach, Punta Norte Nature Reserve, Peninsula Valdes, Chubut Province, Patagonia, Argentina.
01733359
Gabriel Rojo / Geoffroy's cat (Leopardus geoffroyi) walking along beach with Gulls (Larus sp.) in background, Punta Norte Nature Reserve, Peninsula Valdes, Chubut Province, Patagonia, Argentina.
01733358
George Sanker / Coyote (Canis latrans) hunting in a wetland meadow in summer, Yellowstone National Park, Wyoming, USA. June.
01733355
Jussi Murtosaari / Two Brown bear (Ursus arctos) males, fighting, Finland. August.
01733354
Jussi Murtosaari / Fieldfare (Turdus pilaris) perched in Rowan (Sorbus sp.) tree, feeding on berries, Finland. October.
01733353
Jussi Murtosaari / Blue-cheeked bee-eater (Merops persicus) perched on branch, Finland. June.
01733352
Jussi Murtosaari / Two Broad-bordered bee hawkmoths (Hemaris fuciformis) nectaring on wildflower, Finland. July.
01733351
Jussi Murtosaari / Grey wolf (Canis lupus) shaking fur dry after swimming, Finland. August.
01733350
Jussi Murtosaari / Common glow-worm (Lampyris noctiluca) female, resting on leaf, glowing, Finland. July.
01733349
Jussi Murtosaari / Bank vole (Clethrionomys glareolus) standing on hind legs, feeding on Strawberry (Fragaria sp.) leaves, Finland. July.
01733348
Jussi Murtosaari / Lesser purple emperor butterfly (Apatura ilia) male, in flight, Finland. July.
01733347
Jussi Murtosaari / Peacock butterfly (Aglais io) in flight over wildflowers, Finland. May.
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...
01733326
Linda Pitkin / Barrel sponge (Xestospongia testudinaria) on reef with shoal of Barracuda (Sphyraena sp.) in background, Tubbataha Reefs Natural Park, Palawan, Philippines, Sulu Sea.
01733325
Linda Pitkin / Anthias (Pseudanthias sp.) and Damselfish (Chromis sp.) swimming over coral reef with Acropora (Acropora sp.) corals and Fire coral (Millepora sp.), Tubbataha Reefs Natural Park, Palawan, Philippines,...
01733324
Mark Carwardine / European hare (Lepus europaeus) sitting alert at edge of woodland, Hungary. June.
01733323
Mark Carwardine / European swallow (Hirundo rustica) flying low over water to drink, Hungary. June.
Mark Carwardine / Brown bear (Ursus arctos) female, standing at edge of river, Great Bear Rainforest, British Columbia, Canada. October.
01733320
Marie Read / Varied thrush (Ixoreus naevius) male, perched on branch, singing in spring, Eagle River, Alaska, USA. May.
01733319
Marie Read / Snow buntings (Plectrophenax nivalis) large flock taking flight in winter, Vermont, USA. January.
01733318
Marie Read / Two Pigeon guillemots (Cepphus columba) in flight over rippling water, Haida Gwaii, British Columbia, Canada. May.
01733317
Marie Read / Pacific loons (Gavia pacifica) pair in breeding plumage, on water, Anchorage, Alaska, USA. May.
01733316
Marie Read / Northern parula (Parula americana) male in breeding plumage, perched in flowering Eastern redbud (Cercis canadensis) in spring, Ohio, USA. April.
01733315
Oliver Hellowell / Red squirrel (Sciurus vulgaris) standing on mossy rock in woodland garden, Perthshire, Scotland, UK. September. Cropped.
01733314
Oliver Hellowell / Red squirrel (Sciurus vulgaris) sitting upright among heather, in woodland garden, Perthshire, Scotland, UK. September. Cropped.
01733313
Oliver Hellowell / Red squirrel (Sciurus vulgaris) sitting on mossy rock in woodland garden, Perthshire, Scotland, UK. September. Cropped.
01733312
Oliver Hellowell / Red squirrel (Sciurus vulgaris) standing at base of Pine tree in woodland garden, Perthshire, Scotland, UK. September. Cropped.
01733311
Pal Hermansen / Melodius blackbird (Dives dives) attempting to catch a butterfly which is flying behind a plexiglass window, Costa Rica.
01733308
Pal Hermansen / Musk ox (Ovibos moschatus) pair mating, Dovrefjell-Sunndalsfjella National Park, Norway. September.
01733307
Pal Hermansen / Brimstone butterfly (Gonepteryx rhamni) in flight in bright sunshine, Follo, Akershus, Norway. July.
01733306
Pal Hermansen / Satyr pug moth (Eupithecia satyrata) flying off from flowerhead in meadow, Lofoten, Norway. June. Multiple-exposure.
01733305
Pal Hermansen / Yelllow dung fly (Scathophaga stercoraria) pair, mating on sheep dung, Lofoten, Norway. June.
01733304
Pal Hermansen / Group of male Toads (Bufo bufo) trying to mate with female, underwater in small lake, Akershus, Norway. May.
01733303
Ripan Biswas / Bombay night frog (Nyctibatrachus humayuni) egg cluster, with tadpoles visible inside translucent eggs, on leaf, Amboli, Maharastra, India.
01733302
Richard Flack / Böhm's bee-eater (Merops boehmi) perched on thin branch of wild Mango (Mangifera sp.) tree in riparian woodland, Thangadzi River Conservancy, Southern Malawi.
01733298
Ross Hoddinott / Group of Four-spotted chaser dragonflies (Libellula quadrimaculata) roosting on plant stem, backlit in the early morning light, Ham Wall RSPB Nature Reserve, Somerset Levels, UK. June.
01733296
Roger Powell / Red-throated diver (Gavia stellata) male, running over the water at speed and taking flight, Kongsfjordfjellet, Finnmark, Norway. June.
01733295
Roger Powell / Two Ruffs (Calidris pugnax) male, fighting at the lek, Pokka, Finland, Lapland. May.
01733294
Roger Powell / Two Ruffs (Calidris pugnax) male, fighting at the lek, Pokka, Finland, Lapland. May.
01733293
Roger Powell / Four Greylag geese (Anser anser) flying low over lake, East Chevington Reserve, Druridge Bay, Northumberland, UK. November.
01733292
Roger Powell / Bearded vulture (Gypaetus barbatus) juvenile, landing among a group of Griffon vultures (Gyps fulvus) at feeding site with a wooded hillside behind, Lamiana, Aragon, Spanish Pyrenees, Spain. April.
01733291
Roger Powell / Two Bearded vultures (Gypaetus barbatus) in courtship display over a hillside, immature male trying to talon grapple with a mature female, Lamiana, Aragon, Spanish Pyrenees, Spain. April.
01733290
Roger Powell / Two Bearded vultures (Gypaetus barbatus) fighting over food, one with wings spread in threatening posture, Lamiana, Aragon, Spanish Pyrenees, Spain. April.
01733287
Sven Zacek / Common blue damselflies (Enallagma cyathigerum) pair, in flight over bog pool, Nigula Nature Protection Area, Parnumaa county, Estonia.
01733284
Sven Zacek / Capercaillie (Tetrao urogallus) male, with some tail feathers missing, lekking at sunset, Tartumaa county, Estonia.
01733283
Sven Zacek / Capercaillie (tetrao urogallus) male, lekking perched on top of a Pine tree at dusk, Tartumaa county, Estonia.
01733282
Tui De Roy / Monarch butterflies (Danaus plexippus) resting on trees in wintering grounds in the mountains of central Mexico, El Rosario Butterfly Sanctuary, Michoacan, Mexico.
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.
01733280
Tui De Roy / Panamic horse conch (Triplofusus giganteus) in tidepool, Santiago Island, Galapagos Islands.
01733279
Tui De Roy / Green turtle (Chelonia mydas) swimming with school of Barracuda (Sphyraena sp.) behind, Cousins Rock, near Santiago Island, Galapagos Islands. 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.
01733277
Tui De Roy / Monarch butterflies (Danaus plexippus) covering Fir trees on wintering grounds in the mountains of central Mexico, El Rosario Butterfly Sanctuary, Michoacan, Mexico.
01733276
Tui De Roy / 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.
01733087
Staffan Widstrand / RF - Two Ruffs (Philomachus pugnax) male, fighting at lek site, Varanger Peninsula, Finnmark, Norway. June. (This image may be licensed either as rights managed or royalty free.)
01733086
Staffan Widstrand / RF - Atlantic guillemot (Uria aalge) standing on rock spreading its wings at sunset, with colony behind, Hornoya bird cliff Island, Vardoe, Varanger Peninsula, Finnmark, Norway. June. (This image may...
01733085
Staffan Widstrand / RF - Atlantic puffin (Fratercula arctica) portrait, Hornoya bird cliff Island, Vardoe, Varanger Peninsula, Finnmark, Norway. June. (This image may be licensed either as rights managed or royalty free....
01732439
Terry Whittaker / Atlantic puffin (Fratercula arctica), Grimsey Island, Iceland, June.
01732175
Guy Edwardes / Southern festoon butterflies (Zerynthia polyxena), newly emerged adults resting on their foodplant, Birthwort (Aristolochia clematitis), near Bratsigovo, Bulgaria, May.
01732174
Guy Edwardes / European pond turtle/terrapin (Emys orbicularis) swimming in pond with head above water and a fly resting on its snout, near Bratsigovo, Bulgaria, May
01732173
Guy Edwardes / Apollo butterflies (Parnassius apollo) roosting, Rhodope Mountains, Bulgaria, June.
01732172
Guy Edwardes / Black-veined white butterflies (Aporia crataegi) roosting on Burnt orchid (Orchis ustulata), Rhodope Mountains, Bulgaria, June.
01732171
Guy Edwardes / Silver-studded blue (Plebejus argus), backlit at sunset, Rhodope Mountains, Bulgaria, June
01732170
Guy Edwardes / Spoonwing lacewing (Nemoptera sinuata), warming itself at sunrise, Rhodope Mountains, Bulgaria, June
01732169
Guy Edwardes / Spotted fritillary (Melitaea didyma) larva/caterpillar, near Bratsigovo, Bulgaria June
01729653
Joel Sartore / Photo Ark / Blunt-nosed leopard lizard (Gambelia sila) looking around. The animal leaves the frame. Fresno Chaffee Zoo, California. Captive.
01729652
Joel Sartore / Photo Ark / Close up of a Timber rattlesnake's (Crotalus horridus) tail. It is vibrating its tail as a threat display. Verve Biotech, Waverly, Nebraska. Captive.
Joel Sartore / Photo Ark / Grandidier's mongoose / Grandidier's vontsira (Galidictis grandidieri) looking around, Al Bustan Zoological Centre. Captive. Endangered.
01729648
Joel Sartore / Photo Ark / Eastern quoll (Dasyurus viverrinus) lying down and looking at the camera, Zoo Leipzig. 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.
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.
01729645
Joel Sartore / Photo Ark / Marbled cat (Pardofelis marmorata longicaudata) looking towards the camera and lying down. The animal hisses and bares its teeth. Al Bustan Zoological Centre, Sharjah. Captive.
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.
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.
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...
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...
01729640
Joel Sartore / Photo Ark / Eastern black bear (Ursus americanus americanus) juvenile, four months old, looking at the camera and moving curiously towards the camera, North Carolina Zoo Wildlife Rehabilitation Center, USA. Contr...
Joel Sartore / Photo Ark / Giant vietnamese centipede (Scolopendra dehaani) cleaning antennae with mandibles, Verve Biotech, Waverly, Nebraska. Captive.
01729637
Joel Sartore / Photo Ark / Bigclaw crayfish (Faxonius placidus) female oxygenating eggs by fanning them, upper Duck River, Coffee County, Tennessee, USA. Controlled conditions.
01729636
Joel Sartore / Photo Ark / Spanish dancer nudibranch (Hexabranchus sanguineus) with an Emperor shrimp (Zenopontonia rex) moving on top of it, Farglory Ocean Park, Hualien. Captive.
01729634
Joel Sartore / Photo Ark / Common topknot (Zeugopterus punctatus) moving its fins, Aquazoo Loebbecke Museum, Dusseldorf. Captive.
01729633
Joel Sartore / Photo Ark / Close up of a Common topknot (Zeugopterus punctatus) head. The animal is looking at the camera. Aquazoo Loebbecke Museum, Dusseldorf. Captive.
01729632
Joel Sartore / Photo Ark / Close up of a Coral grouper (Cephalopholis miniata) head. The animal looks around. Oklahoma Aquarium. Captive.
01729631
Joel Sartore / Photo Ark / Bigmouth chub (Nocomis platyrhynchus) looking around, Aquatic Wildlife Conservation Center, Marion, Virginia. Captive.
01729630
Joel Sartore / Photo Ark / Buffalo darter (Ehtheostoma bison), Brush Creek, Lewis County, Tennessee, USA. Controlled conditions.
01729629
Joel Sartore / Photo Ark / Sulawesi white-collared kingfisher (Todiramphus chloris) defecating, San Diego Zoo. Captive.