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Juvenile alligator in swampland (bayou) at Jean Lafitte National Historical Park and Preserve, south of New Orleans, Louisiana, USA
Gray wolf (grey wolf), Canis lupus, Wildlife Preserve, Rheinhardswald, Germany, Europe
Takin, national animal of Bhutan, Motithang Takin Preserve, Thimphu, Bhutan, Asia
Seventy Islands (Ngerukewid Islands Wildlife Preserve), forest-covered limestone rock, protected as a Nature Reserve, so can only be seen from the air, Palau, Micronesia, Western Pacific Ocean, Pacific
Seventy Islands (Ngerukewid Islands Wildlife Preserve), forest-covered limestone rock, protected as a Nature Reserve, so can only be seen from the air, Palau, Micronesia, Western Pacific Ocean, Pacific
Seventy Islands (Ngerukewid Islands Wildlife Preserve), forest-covered limestone rock, protected as a Nature Reserve, so can only be seen from the air, Palau, Micronesia, Western Pacific Ocean, Pacific
View of lava fields and snow-capped peaks in the distance, Etna, Sicily, Italy, Mediterranean, Europe
Mount McKinley with tundra in fall color, Denali National Park and Preserve, Alaska, United States of America, North America
Grizzly bear (Ursus arctos horribilis) (Coastal brown bear) on a road with fall color, Denali National Park and Preserve, Alaska, United States of America, North America
Hikers in front of Lamplugh Glacier, Glacier Bay National Park and Preserve, UNESCO World Heritage Site, Alaska, United States of America, North America
Gray wolf (grey wolf), Canis lupus, Wildlife Preserve, Rheinhardswald, Germany, Europe
A kayaker paddling in front of Lamplugh Glacier, Glacier Bay National Park and Preserve, UNESCO World Heritage Site, Alaska, United States of America, North America
Johns Hopkins Inlet, Fairweather Range, Glacier Bay National Park and Preserve, Southeast Alaska, United States of America, North America
Orange brown beech tree with autumn leaves, Savernake Forest, Wiltshire, England, United Kingdom, Europe
Mount McKinley (Mount Denali), Denali National Park and Preserve, Alaska, United States of America, North America
The Roman period Odeon building, Apollonia Archaeological Park, Pojan, Albania, Europe
Grey crowned crane (Balearica regulorum). Amboseli National Park, Kenya, East Africa, Africa
Conservation protection of walls, Water gardens, Sigiriya Rock palace, UNESCO World Heritage Site, Central Province, Sri Lanka, Asia
Countryside landscape, near Huebro, Ruta del Agua, Sierra Alhamilla mountains, Nijar, Almeria, Andalusia, Spain, Europe
Mount McKinley (Mount Denali) at sunset in the fall, Denali National Park and Preserve, Alaska, United States of America
North American elk (Cervus Elaphus) and sand dunes, Great Sand Dunes National Park and Preserve, Sangre Cristo Mountains in background, Colorado, United States of America, North America
Information panel about geology, La Isleta, Cabo de Gata national park, Almeria, Andalusia, Spain, Europe
Monument of Agonothetes (Bouleuterion), Roman 2nd century AD, Apollonia Archaeological Park, Pojan, Albania, Europe
Adult Andean condors (Vulture gryphus), Wildlife Conservation Society Preserve of Karukinka, Strait of Magellan, Chile, South America
Breeding pair of kelp geese (Chloephaga hybrida), Wildlife Conservation Society Preserve of Karukinka, Strait of Magellan, Chile, South America
Mount McKinley reflected in a pond, Denali National Park and Preserve, Alaska, United States of America, North America
Sand dunes, Great Sand Dunes National Park and Preserve, with Sangre Cristo Mountains in the background, Colorado, United States of America, North America
Porcupine caribou (Grant's caribou) (Rangifer tarandus granti) cow among fall colors, Denali National Park and Preserve, Alaska, United States of America, North America
Red fox (Vulpes vulpes) (Vulpes fulva), Denali National Park and Preserve, Alaska, United States of America, North America
Mount McKinley (Mount Denali), Denali National Park and Preserve, Alaska, United States of America, North America
Sand dunes in the Great Sand Dunes National Park and Preserve, with Sangre Cristo Mountains in the background, Colorado, United States of America, North America
Johns Hopkins Glacier calving, Fairweather Range, Glacier Bay National Park and Preserve, Southeast Alaska, United States of America, North America
King cormorant (Phalacrocorax albiventer), Wildlife Conservation Society Preserve of Karukinka, Strait of Magellan, Chile, South America
Hikers on the sand dunes, Great Sand Dunes National Park and Preserve, with Sangre Cristo Mountains in the background, Colorado, United States of America, North America
Hiker on the sand dunes, Great Sand Dunes National Park and Preserve, with Sangre Cristo Mountains in the background, Colorado, United States of America, North America
Great Sand Dunes and mountains with snow, Great Sand Dunes National Park and Preserve, Colorado, United States of America, North America
Great Sand Dunes and mountains with snow, Great Sand Dunes National Park and Preserve, Colorado, United States of America, North America
Adult black-browed Albatross (Thalassarche melanophrys), Wildlife Conservation Society Preserve of Karukinka, Strait of Magellan, Chile, South America
Alaska Range, Denali National Park and Preserve, Alaska, United States of America, North America
Johns Hopkins Inlet, Fairweather Range, Glacier Bay National Park and Preserve, Southeast Alaska, United States of America, North America
Johns Hopkins Inlet, Fairweather Range, Glacier Bay National Park and Preserve, Southeast Alaska, United States of America, North America
Tundra in fall colors, Denali National Park and Preserve, Alaska, United States of America, North America
Sand dunes, Great Sand Dunes National Park and Preserve, Colorado, United States of America, North America
Johns Hopkins Glacier calving, Fairweather Range, Glacier Bay National Park and Preserve, Southeast Alaska, United States of America, North America
Great Sand Dunes late in the afternoon, Great Sand Dunes National Park and Preserve, Colorado, United States of America, North America
Mountains and a stream through the tundra in fall color, Denali National Park and Preserve, Alaska, United States of America, North America
Red squirrel (spruce squirrel) (Tamiasciurus hudsonicus), Denali National Park and Preserve, Alaska, United States of America
Grizzly bear (Ursus arctos horribilis) (Coastal brown bear) dripping wet while fishing, Katmai National Park and Preserve, Alaska, United States of America, North America
Beaver (Castor canadensis) swimming, Denali National Park and Preserve, Alaska, United States of America, North America
Young beaver (Castor canadensis) swimming, Denali National Park and Preserve, Alaska, United States of America, North America
Willow Ptarmigan (Lagopus lagopus), Katmai National Park and Preserve, Alaska, United States of America, North America
Mountains and tundra in fall color, Denali National Park and Preserve, Alaska, United States of America, North America
Adult snail kite (Rostrhamus sociabilis), in the Pacaya Samiria Preserve, Loreto, Peru, South America
Solitary sandpiper (Tringa solitaria), Katmai National Park and Preserve, Alaska, United States of America, North America
Jajce Fortress, Bosnia and Herzegovina, Europe
Looking down into the Los Peces fresh water cave near Playa Giron, Matanzas Province, Cuba, West Indies, Caribbean, Central America
Mount McKinley (Mount Denali), Denali National Park and Preserve, Alaska, United States of America
A view in Glacier Bay National Park and Preserve, UNESCO World Heritage Site, Southeast Alaska, United States of America, North America
Scenic view of Glacier Bay National Park and Preserve, UNESCO World Heritage Site, Southeast Alaska, Pacific Ocean, United States of America, North America
Sgwd Clun-Gwyn waterfall, Ystradfellte, Brecon Beacons, Powys, Wales, United Kingdom, Europe
A view of Margerie Glacier against the Fairweather Range in Glacier Bay National Park and Preserve, UNESCO World Heritage Site, Alaska, United States of America, North America
A close up view of Lamplugh Glacier in Glacier Bay National Park and Preserve, UNESCO World Heritage Site, Southeast Alaska, United States of America, North America
A view of Tlingit eagle carving at Bartlett Cove in Glacier Bay National Park and Preserve, UNESCO World Heritage Site, Southeast Alaska, United States of America, North America
A view of South Marble Island in Glacier Bay National Park and Preserve, UNESCO World Heritage Site, Southeast Alaska, United States of America, North America
Scenic view of Glacier Bay National Park and Preserve, UNESCO World Heritage Site, Southeast Alaska, Pacific Ocean, United States of America, North America
Lamplugh Glacier, a tidewater glacier in Glacier Bay National Park and Preserve, Southeast Alaska, United States of America, North America
Perito Moreno Glacier, UNESCO World Heritage Site, around El Calafate, Santa Cruz province, Patagonia, Argentina, South America
A view of Johns Hopkins Glacier against the Fairweather Range in Glacier Bay National Park and Preserve, UNESCO World Heritage Site, Alaska, United States of America, North America
A view of Tarr Inlet in Glacier Bay National Park and Preserve, UNESCO World Heritage Site, Southeast Alaska, United States of America, North America
Tre Cime (Drei Zinnen), Tre Cime Nature Preserve (Parco Naturale Tre Cime), UNESCO World Heritage Site, Dolomites, Italy, Europe
The Little Teepees on the north side of Haystack Mesa in Petrified Forest National Park, Arizona, United States of America, North America
View of Aqueduct from the Ottoman era and Kavala Fortress, Dimos Kavalas, Eastern Macedonia and Thrace, Gulf of Thasos, Gulf of Kavala, Thracian Sea, Greece, Europe
Male Gambel's Quail (Callipepla gambelii) scratching for food, Henderson Bird Viewing Preserve, Henderson, Nevada, United States of America, North America
Jajce Fortress, Bosnia and Herzegovina, Europe
Alaskan brown bear (Ursus middendorffi), Katmai National Park and Preserve, Alaska, United States of America, North America
A tub full of green sea turtle hatchlings (Chelonia mydas), Tangkoko National Preserve on Sulawesi Island, Indonesia, Southeast Asia, Asia
Garibaldi refuge in Adamello Park in summer, Vallecamonica, Brescia province, Lombardy district, Italy, Europe
Grizzly bear (Ursus arctos horribilis) (Coastal brown bear) walking in a stream, Katmai National Park and Preserve, Alaska, United States of America, North America
An adult stork-billed kingfisher (Pelargopsis capensis), perched in Tangkoko National Preserve on Sulawesi Island, Indonesia, Southeast Asia, Asia
The Little Teepees on the north side of Haystack Mesa in Petrified Forest National Park, Arizona, United States of America, North America
Sandstone that has been eroded into forms that resemble clam shells on the south end of Petrified Forest National Park, Arizona, United States of America, North America
Dunes at the West Sands in St. Andrews, Fife, Scotland, United Kingdom, Europe
African elephants (Loxodonta africana) at sunset, Nxai Pan National Park, Botswana, Africa
Hot Springs at the Langarice Canyon, Vjosa (Vjose) River, Albania, Europe
Crystal Mesa above Crystal Creek west of Hamilili Point in Petrified Forest National Park, Arizona, United States of America, North America
An island of rock just off the Billings Gap Trail at Petrified Forest National Park, Arizona, United States of America, North America
Monteverde Cloud Forest Biological Preserve, Puntarenas Province, Costa Rica, Central America
East slopes of Haystack Mesa in Petrified Forest National Park, Arizona, United States of America, North America
Sunrise on saguaro cactus in bloom (Carnegiea gigantea), Sweetwater Preserve, Tucson, Arizona, United States of America, North America
Crescent Lake, Lake Clark National Park and Preserve, Alaska, United States of America, North America
Tall hoodoo towers in the valley below Blue Mesa in Petrified Forest National Park, Arizona, United States of America, North America
Roman town of Herculaneum, UNESCO World Heritage Site, Campania, Italy, Europe
Grizzly bear (Ursus arctos horribilis) (Coastal brown bear), Katmai National Park and Preserve, Alaska, United States of America, North America
Flowering cholla cactus (Cylindropuntia spp), in the Sweetwater Preserve, Tucson, Arizona, United States of America, North America
A pointed peak of bentonite in Hamilili Valley on the south end of Petrified Forest National Park, Arizona, United States of America, North America
Beaver (Castor canadensis) swimming with food, Denali National Park and Preserve, Alaska, United States of America, North America
Grizzly bear (brown bear) (Ursus arctos) at Crescent Lake, Lake Clark National Park and Preserve, Alaska, United States of America, North America
A tub full of green sea turtle hatchlings (Chelonia mydas), Tangkoko National Preserve on Sulawesi Island, Indonesia, Southeast Asia, Asia
Juvenile Dall Sheep (Ovis dalli) and lamb among fall color, Denali National Park and Preserve, Alaska, United States of America, North America
Dwarf Dogwood flowers and the rocky coastline by the Atlantic Ocean, Dr. Bill Freedman Nature Preserve, Nature Conservancy of Canada, Nova Scotia, Canada, North America