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Eastern grey kangaroo (Macropus giganteus) on beach, Murramarang National Park, New South Wales, Australia, Pacific
Two polar bears walking on glacier in Bjornsundet, Spitsbergen, Norway, Europe
White-fronted bee-eaters, Merops bullockoides, Chobe National Park, Chobe River, Botswana, Africa
Adult humpback whale (Megaptera novaeangliae), breaching in Sitka Sound, Southeast Alaska, United States of America, North America
Steller sea lion (Eumetopias jubatus), hauled out on South Marble Island, Glacier Bay National Park, Southeast Alaska, United States of America, North America
Harbor seal (Phoca vitulina), mother with pup at South Sawyer Glacier, Tracy Arm, Southeast Alaska, United States of America, North America
Adult harbor seals (Phoca vitulina), on ice at Dawes Glacier, Endicott Arm, Southeast Alaska, United States of America, North America
European eagle owl, Bubo bubo, female, captive, World Owl Trust, Muncaster Castle, Cumbria, England, United Kingdom, Europe
Osprey (Pandion haliaetus) taking flight with fish near Honeymoon Bay, Isla Danzante, Baja California Sur, Mexico, North America
Adult humpback whale (Megaptera novaeangliae) breaching in the Gerlache Strait, Antarctica, Polar Regions
Crimson rosella (juvenile), Yarra Ranges National Park, Victoria, Australia, Pacific
Adult Adelie penguins (Pygoscelis adeliae) walking on first year sea ice in Active Sound, Weddell Sea, Antarctica, Polar Regionswhitening of whites, slight increase in contrast
An adult orange-winged parrot (Amazona amazonica), in Iricahua Cano, Amazon Basin, Loreto, Peru, South America
Black bear (Ursus americanus) sow nursing a spring cub, Yellowstone National Park, Wyoming, United States of America, North America
First season king penguin (Aptenodytes patagonica) chick stretching its wings, Salisbury Plain, South Georgia, Polar Regions
Southern giraffe (Giraffa camelopardalis), Mala Mala Game Reserve, South Africa, Africa
Gray wolf (Canis lupus) in captivity, Sandstone, Minnesota, United States of America, North America
Young desert giraffe (Giraffa camelopardalis capensis), Namibia, Africa
A curious male leopard seal (Hydrurga leptonyx), underwater at Monroe Island, South Orkney Islands, Antarctica, Polar Regions
Sea turtle, Anse Source d'Argent beach, La Digue, Seychelles, Indian Ocean, Africa
African elephant bull (Loxodonta africana), Kruger National Park, Mpumalanga, South Africa, Africa
Tortoise, Galapagos Islands, Ecuador, South America
Panorama of Kok-Moinok Canyon, a clay-sand structure formed on the slopes of arid mountains cut by water streams, Kyrgyzstan, Central Asia, Asia
African fish eagle (Haliaeetus vocifer), framed by branches, South Luangwa National Park, Zambia, Africa
Leopard (Panthera pardus) female, Kgalagadi Transfrontier Park, South Africa, Africa
Neotropic cormorant (Phalacrocorax brasilianus) (Phalacrocorax olivaceus) (Nannopterum brasilianum), Lake Sandoval, Tambopata National Reserve, Peru, South America
Mountain lion or cougar (Felis concolor) in snow, near Bozeman, Montana, United States of America, North America
Male lion (Panthera leo), Masai Mara National Reserve, Kenya, East Africa, Africa
On the Trail with Pack Mules transporting gear in the Himalayas, Lang Tang Valley trek, Himalayas, Nepal, Asia
White rhino (Ceratotherium simum), Mkhuze game reserve, Kwazulu Natal, South Africa, Africa
Mountain goats, Gorges du Verdon, Provence, France, Europe
Mocking birds, Espanola Island, Galapagos, Ecudaor, South America
Land iguana, Isabela Island, Galapagos, Ecuador, South America
Young male lion (Panthera leo) resting among yellow wildflowers, Kgalagadi Transfrontier Park, encompasing the former Kalahari Gemsbok National Park, South Africa, Africa
Chinstrap penguin, Gourdin Island, Antarctic Peninsula, Antarctica, Polar Regions
King penguins with brown feathered chicks, St. Andrews Bay, South Georgia, South Atlantic
Baby Masai giraffe (Giraffa camelopardalis tippelskirchi) nursing, Masai Mara National Reserve, Kenya, East Africa, Africa
Female Western lowland gorilla (Gorilla gorilla gorilla) in captivity, Rio Grande Zoo, Albuquerque Biological Park, Albuquerque, New Mexico, United States of America, North America
Crinoid shrimp, Cebu, Philippines.
Cape ground squirrel (Xerus inauris) grooming, Kgalagadi Transfrontier Park, former Kalahari Gemsbok National Park, South Africa
Great blue heron (Ardea herodias) with a fish, Esquimalt Lagoon, Saanich, British Columbia, Canada, North America
Common zebra (Plains zebra) (Burchell's zebra) (Equus burchelli), Mountain Zebra National Park, South Africa, Africa
Female Greater Kudu (Tragelaphus strepsiceros), Addo Elephant National Park, South Africa, Africa
Pack Ice Type B killer whales (Orcinus orca), finding a leopard seal (Hydrurga leptonyx), on an ice floe in Antarctica, Polar Regions
A beautiful nudibranch (Halgerda batangas) crawls on the sandy seafloor of Lembeh Strait, Indonesia. Lembeh Strait is known for its diverse array of bizarre marine organisms.
A West Indian starfish (Oreaster reticulatus) crawls slowly across a sand and seagrass seafloor in Turneffe Atoll, Belize. This part of Central America is well known for its clear waters and beautiful coral reefs.
A West Indian starfish (Oreaster reticulatus) crawls slowly across a sandy seafloor in Turneffe Atoll, Belize. This part of Central America is well known for its clear waters and beautiful coral reefs.
Delicate corals grow on a shallow reef near the island of Flores in Indonesia. This beautiful region is known for its spectacular reefs and high marine biodiversity.
Corals grow on a shallow reef in Indonesia. This beautiful, tropical region is known for its spectacular reefs and high marine biodiversity.
Detail of an encrusting sponge growing on a reef in Komodo National Park, Indonesia. This tropical region in Indonesia is known for its spectacular coral reefs and high marine biodiversity.
A pair of Ceylon nudibranchs (Gymnodoris ceylonica) mate on a sandy slope in Komodo National Park, Indonesia. This tropical region in Indonesia is known for its spectacular coral reefs and high marine biodiversity.
An adult southern white-faced Scops-Owl (Ptilopsis granti), at night in the Okavango Delta, Botswana, Africa
A spine-cheeked anemonefish (Premnas biaculeatus) swims among the tentacles of its host anemone in Wakatobi National Park, Indonesia.
A yellow stingray (Urobatis jamaicensis) lays on the sandy seafloor of Turneffe Atoll in Belize. This small and beautiful elasmobranch ranges throughout the Caribbean Sea.
Colorful lily pads grow along the shallow edge of a freshwater lake in New England. Aquatic vegetation, which thrives during summer months, provides vital habitat for many fish, amphibians, and reptiles.
Saddleback anemonefish embryos develop on the seafloor of Lembeh Strait, Indonesia.
A messmate pipefish, Corythoichthys intestinalis, swims over the seafloor in Alor, Indonesia.
A lizardfish, Synodus sp., waits for prey to swim close by on a reef near Alor in Indonesia.
A small, unidentified scorpionfish hides in a shallow seagrass meadow in the Banda Islands of eastern Indonesia.
A pair of harlequin shrimp (Hymenocera elegans) lie in a small recess on the seafloor of Lembeh Strait, Indonesia.
A beautiful coral reef grows near an island in the Banda Sea, Indonesia. This remote and historic region, known previously for the Spice Islands, harbors extraordinary marine biodiversity.
Detail of the mouth on a mushroom coral (Fungia sp.) in Lembeh Strait, Indonesia.
A large banded sea snake, Laticauda colubrina, sinuously swims over a beautiful reef in Wakatobi National Park, Indonesia.
An adult male green sea turtle, Chelonia mydas, swims in the dark waters near a reef in Wakatobi National Park, Indonesia.
A colorful West Indian starfish, Oreaster reticulatus, crawls over a shallow, sandy seafloor in Turneffe Atoll in the Caribbean Sea. This reef is part of the massive Mesoamerican Reef System, the second largest barrier reef on Earth.
A well-camouflaged yellow stingray, Urobatis jamaicensis, swims over a shallow seagrass meadow growing within Turneffe Atoll's lagoon in the Caribbean Sea. This reef is part of the massive Mesoamerican Reef System, the second largest barrier reef on Earth
A warty sea star, Echinaster callosus, clings to a coral reef in Raja Ampat, Indonesia.
A Florida manatee, Trichechus manatus latirostris, rises to the surface of Crystal River, Florida. This endangered sirenian subspecies migrates to inland rivers during the winter where water temperatures are warmer than the ocean.
A well-camouflaged ornate ghost pipefish, Solenostomus paradoxus, hovers over a reef in Komodo National Park, Indonesia.
A well-camouflaged ornate ghost pipefish, Solenostomus paradoxus, hovers over a reef in Komodo National Park, Indonesia.
A broadclub cuttlefish, Sepia latimanus, hovers above a reef in Sulawesi, Indonesia.
A colorful flamboyant cuttlefish, Metasepia pfefferi, crawls across the sandy seafloor in Lembeh Strait, Indonesia.
A colorful soft coral adorns a giant clam, Tridacna sp., growing on a healthy reef in Raja Ampat, Indonesia.
Cardinalfish school around a colorful coral bommie growing on a reef in Raja Ampat, Indonesia.
A broadclub cuttlefish, Sepia latimanus, hovers over a healthy reef on the remote island of Teun in Indonesia's Banda Sea.
A beautiful coral reef thrives in shallow water in Indonesia's Ceram Sea.
A beautiful coral reef thrives in shallow water in Indonesia's Banda Sea. This part of eastern Indonesia is home to part of the world's greatest marine biodiversity.
Simnia snail.
This fish is having its gills cleaned by a cleaner wrasse so it opens wide allowing the fish to come in and feed on parasites, Raja Ampat, Indonesia.
A white paddleflap rhinopias showing off its handsome profile, Anilao, Philippines.
Adult king penguin (Aptenodytes patagonicus) amongst chicks at breeding colony at Gold Harbour, South Georgia Island, Polar Regions
Adult king penguins (Aptenodytes patagonicus) amongst chicks at breeding colony at Gold Harbour, South Georgia Island, Polar Regions
Mother southern elephant seal (Mirounga leonina) nursing young pup at breeding site at Peggotty Bluff, South Georgia Island, Polar Regions
Gentoo penguin colony (Pygoscelis papua), Damoy Point, Wiencke Island, Antarctica, Polar Regions
Brown capuchin monkey (Cebus apella) (Sapajus apella) on tree, Tambopata National Reserve, Puerto Maldonado, Tambopata Province, Madre de Dios, Peru, South America
Lake Sandoval and Aguaje palms, Tambopata National Reserve, Puerto Maldonado, Madre de Dios, Peru, South America
Lake Sandoval and Aguaje palms, Tambopata National Reserve, Puerto Maldonado, Madre de Dios, Peru, South America
Osprey (Pandion haliaetus) along the Madison River, Yellowstone National Park, UNESCO World Heritage Site, Wyoming, United States of America, North America
Panther chameleon (Furcifer pardalis) at Nosy Komba island, North West Madagascar, Indian Ocean, Africa
Adelie penguins (Pygoscelis adeliae), with chinstrap penguins (Pygoscelis antarctica), on ice at Booth Island, Antarctica, Polar Regions
An adult golden-mantled ground squirrel (Callospermophilus lateralis), feeding in Yellowstone National Park, Wyoming, United States of America, North America
Zebra, Pilanesberg National Park, North West Province, South Africa, Africa
Cape sugarbird (Promerops cafer), perched on protea, Harold Porter Botanical Gardens, Western Cape, South Africa, Africa
An adult golden-mantled ground squirrel (Callospermophilus lateralis) feeding, Rocky Mountain National Park, Colorado, United States of America, North America
Dunnet Bay at sunset, near Thurso, Caithness, Highlands, Scotland, United Kingdom, Europe
Dunnet Bay at sunset, near Thurso, Caithness, Scotland, United Kingdom, Europe
Rock details near Marwick Head, Mainland, Orkney Islands, Scotland, United Kingdom, Europe
Boat Cove, West Penwith, Cornwall, England, United Kingdom, Europe
Misurina and Monte Cristallo panorama, Dolomites, Belluno, Italy, Europe
Greater flamingoes (Phoenicopterus ruber) and Lesser flamingoes (Phoenicopterus minor), Walvis Bay, Namibia, Africa