Joel Sartore / Photo Ark / White-spotted hermit crab (Dardanus megistos) emerging from its shell before walking out of frame, Riverbanks Zoo. Captive.
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Lukas Schaefer / Aerial tracking shot of frozen tree canopy during a snowstorm, Zabljak, Montenegro, February.
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Lukas Schaefer / Aerial tracking shot of frozen trees during a snowstorm, Zabljak, Montenegro, February.
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Lukas Schaefer / Aerial tracking shot of a glacial tongue showing crevasses in the ice, Passo dello Stelvio, Gruppo Ortles, Val Venosta, Italy, October.
Steven Kazlowski / Polar bear (Ursus maritimus) sow with cubs walking along coast during fall freeze up, off 1002 coastal plain of Arctic National Wildlife Refuge, Alaska, USA. October.
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Steven Kazlowski / Polar bear (Ursus maritimus) sow with cub walking across newly formed pack ice, off 1002 coastal plain of Arctic National Wildlife Refuge, Alaska, USA. October.
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Steven Kazlowski / Adult Polar bear (Ursus maritimus) silhouetted at sunrise along barrier island, off 1002 coastal plain of Arctic National Wildlife Refuge, Barter Island, Alaska, USA. October.
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David Weiller / Slug moth caterpillars (Acharia hyperoche) shedding skin on a palm leaf, Golfito, Costa Rica, March.
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David Weiller / Slug moth caterpillar (Acharia nesea) walking beside two Ichneumon wasp (Ichneumonidae spp.) cocoons with the remains of two parasitised caterpillars on a palm leaf, Golfito, Costa Rica, March.
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Tony Wu / Female Siberian flying squirrel (Pteromys volans orii) feasting on branch cut from nearby Sakhalin fir tree (Abies sachalinensis). Hokkaido, Japan. February.
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Tony Wu / Siberian flying squirrel (Pteromys volans orii) gliding through forest in early morning. Hokkaido, Japan. February.
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Tony Wu / Siberian flying squirrel (Pteromys volans orii), usually nocturnal, gliding through forest. Diurnal activity like this is not common, probably adaptation to presence of pair of Ural owls. Hokkaido, Ja...
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Tony Wu / Siberian flying squirrel (Pteromys volans orii) carrying sticks of Japanese elm (Ulmus davidiana var. japonica) back to nest; enjoying eating one before entering nest. Hokkaido, Japan. February.
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Tony Wu / Two Siberian flying squirrel (Pteromys volans orii), just emerged from nest, taking moment prior to foraging. Hokkaido, Japan. February.
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Neil Challis / Giant golden orb weaver spider (Nephila pilipes) focus pull from a small male to much larger female in the background, Western Thailand.
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David Weiller / Aerial tracking shot of locals feeding a juvenile Whale shark (Rhincodon typus) and swimming past a crowd of tourists, Oslob, Philippines, May.
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David Weiller / Aerial tracking shot of locals feeding a juvenile Whale shark (Rhincodon typus) and swimming past a crowd of tourists, Oslob, Philippines, May.
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David Weiller / Aerial tracking shot of coral reef formations in shallow sea, Sipadan, Sabah, Malaysia, November.
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Marie Read / Eastern bluebird (Sialia sialis) male feeding on Winterberries (Ilex verticillata) before flying off, Freeville, New York, USA, January.
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Lukas Schaefer / Alpine ibex (Capra ibex) male walking up a mountain in the snow, Gran Paradiso, Italy, December.
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Staffan Widstrand / Pair of Eurasian bee-eaters (Merops apiaster) perched on branch, Pusztaszer reserve, Hungary. May.
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Joel Sartore / Photo Ark / American flamingo (Phoenicopterus ruber) group lifting heads up into frame, Lincoln Children's Zoo. Captive.
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Oscar Dewhurst / European robin (Erithacus rubecula) perched on snow-covered branch, Richmond Park, London, UK. January.
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Jack Dykinga / Yellow-headed blackbird (Xanthocephalus xanthocephalus) flock flying over reed beds, Whitewater Draw Wildlife Preserve, Arizona, USA.
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Robert Thompson / A fallen Sweet chestnut fruit (Castanea sativa) lying on the woodland floor, with a tree trunk covered in Textured lungwort (Lobaria scrobiculata) lichen, UK. October.
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Joel Sartore / Photo Ark / Red-crested turaco (Tauraco erythrolophus) looking around and raising crest, Tracy Aviary. Captive.
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Joel Sartore / Photo Ark / Himalayan monal pheasant (Lophophorus impejanus) male looking around, Pheasant Heaven. Captive.
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Joel Sartore / Photo Ark / Great green macaw (Ara ambiguus) turning its head and moving tongue, Tracy Aviary. Captive.
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Jacob Guy / Scoly coral (Scolymia) feeding under UV light, Corwall, UK. Filmed in studio.
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Jacob Guy / Starry cup coral (Acanthastrea echinata) timelapse of movement under UV light. Filmed in studio.
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Noemie Stroh / Orbicular batfish (Platax orbicularis) schooling into the blue, Shark Reef, Ras Mohamed National park, Red Sea, Egypt, June.
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Noemie Stroh / Yellow scroll coral (Turbinaria reniformis) surrounded by colourful reef fish, Jackson Reef, Red Sea, Egypt, September.
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Matt Roseveare / Parson's chameleon (Calumma parsonii) catching insect with tongue, Eastern rainforests of Madagascar, September.
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Oscar Dewhurst / Mandarin duck (Aix galericulata) drake swimming on pond, backlit by rising sun and bokeh effect, Richmond Park, London, UK. February.
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Bence Mate / Two Great white egret (Ardea alba) in winter, Kiskunsag National Park, Hungary. December.
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Konrad Wothe / Stoat (Mustela erminea) in white winter coat standing upright in snow, Upper Bavaria, Germany, Europe. February.
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Magnus Lundgren / School of Yellow-ribbon sweetlips (Plectorhinchus polytaenia) swimming with the current, Raja Ampat, Indonesia, Pacific Ocean.
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Bruce Thomson / Crucifix toad / Holy cross frog (Notaden bennetti) sitting in shallow water after heavy summer rain, Westmar, Queensland, Australia.
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Markus Varesvuo / Robin (Erithacus rubecula) carrying a red berry in its beak as it takes off, Parainen Uto, Finland. October.
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Lewis Jefferies / Close up shot of Pulsating xenid (Heteroxenia fuscescens) feeding , Red Sea, Egypt
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Lewis Jefferies / Powder blue tangs (Acanthurus leucosternon) shoaling, Maldives, Indian Ocean.
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Mateusz Piesiak / Black-headed Gull (Chroicocephalus ridibundus) flock in flight a dawn, Barycz Valley Landscape Park, Poland. Emotion'Ailes Photography Competition 2021 Category Winner - Artistic.
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Mateusz Piesiak / Bramblings (Fringilla montifringilla) feeding on sunflower seeds in a field that could not be cut due to high water levels, Lower Silesia, Poland. Emotion'Ailes Photography Competition 2021, Categ...
