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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
Gray wolf (grey wolf), Canis lupus, Wildlife Preserve, Rheinhardswald, Germany, Europe
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
Mount McKinley with tundra in 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
View of lava fields and snow-capped peaks in the distance, Etna, Sicily, Italy, Mediterranean, Europe
Orange brown beech tree with autumn leaves, Savernake Forest, Wiltshire, England, United Kingdom, Europe
Grey crowned crane (Balearica regulorum). Amboseli National Park, Kenya, East Africa, Africa
Mount McKinley (Mount Denali) at sunset in the fall, Denali National Park and Preserve, Alaska, United States of 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
Mount McKinley (Mount Denali), Denali National Park and Preserve, Alaska, United States of America, North America
Information panel about geology, La Isleta, Cabo de Gata national park, Almeria, Andalusia, Spain, Europe
Mount McKinley reflected in a pond, Denali National Park and Preserve, Alaska, United States of America, North America
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
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
Johns Hopkins Inlet, Fairweather Range, Glacier Bay National Park and Preserve, Southeast Alaska, United States of America, North America
Monument of Agonothetes (Bouleuterion), Roman 2nd century AD, Apollonia Archaeological Park, Pojan, Albania, Europe
Countryside landscape, near Huebro, Ruta del Agua, Sierra Alhamilla mountains, Nijar, Almeria, Andalusia, Spain, Europe
Mount McKinley (Mount Denali), 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
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
Johns Hopkins Glacier calving, Fairweather Range, Glacier Bay National Park and Preserve, Southeast Alaska, United States of America, North 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
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
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
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
Solitary sandpiper (Tringa solitaria), Katmai 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
Perito Moreno Glacier, UNESCO World Heritage Site, around El Calafate, Santa Cruz province, Patagonia, Argentina, South 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 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
Jajce Fortress, Bosnia and Herzegovina, Europe
Jajce Fortress, Bosnia and Herzegovina, Europe
Dana village, Dana Biosphere Reserve, Jordan, Middle East
Sgwd Clun-Gwyn waterfall, Ystradfellte, Brecon Beacons, Powys, Wales, United Kingdom, Europe
Tre Cime (Drei Zinnen), Tre Cime Nature Preserve (Parco Naturale Tre Cime), UNESCO World Heritage Site, Dolomites, Italy, Europe
El Teide National Park, UNESCO World Heritage Site, Tenerife, Canary Islands, Spain, Atlantic, Europe
African elephants (Loxodonta africana) at sunset, Nxai Pan National Park, Botswana, Africa
Gebel Al-Silsila, Egypt, North Africa, Africa
Bend of Colorado River at Dead Horse Point at sunrise, Dead Horse Point State Park, Utah, United States of America, North America
A view of the island of Bartolome in the Galapagos Islands, UNESCO World Heritage Site, Ecuador, South America
The Little Teepees on the north side of Haystack Mesa in Petrified Forest National Park, Arizona, United States of America, North America
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
Dead Wash Valley in Petrified Forest National Park, Arizona, United States of America
Watchman Mountain, 6545 ft, near Springdale, Utah, United States of America
View of Golden Temple (Kinkaku-ji) (Temple of the Golden Pavilion), UNESCO, Kyoto, Honshu, Japan
Adult brown pelicans (Pelecanus occidentalis), plunge diving for fish, Isla Carmen, Baja California Sur, Mexico, North America
Lamplugh Glacier, a tidewater glacier in Glacier Bay National Park and Preserve, Southeast Alaska, United States of America, North America
Dunes at the West Sands in St. Andrews, Fife, Scotland, United Kingdom, Europe
Alaskan brown bear (Ursus middendorffi), Katmai National Park and Preserve, 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
Looking down into the Los Peces fresh water cave near Playa Giron, Matanzas Province, Cuba, West Indies, Caribbean, Central America
Garibaldi refuge in Adamello Park in summer, Vallecamonica, Brescia province, Lombardy district, Italy, Europe
Grand Canyon, Pima Point, Grand Canyon National Park, UNESCO World Heritage Site, Arizona, United States of America, North America
Dunnet Head and lighthouse, Caithness, Highlands, Scotland, United Kingdom, Europe
Tall hoodoo towers in the valley below Blue Mesa in Petrified Forest National Park, Arizona, United States of America, North America
Prambanan Temple Compounds, UNESCO World Heritage Site, region of Yogyakarta, Java island, Indonesia, Southeast Asia, Asia
East slopes 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
Crystal Mesa above Crystal Creek west of Hamilili Point in Petrified Forest National Park, Arizona, United States of America, North 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
Monteverde Cloud Forest Biological Preserve, Puntarenas Province, Costa Rica, Central America
An island of rock just off the Billings Gap Trail at Petrified Forest National Park, Arizona, United States of America, North America
Rocky Coastline by the Atlantic Ocean, Dr. Bill Freedman Nature Preserve, Nature Conservancy of Canada, Nova Scotia, Canada, North America
Portrait of young woman wearing dry mud, used to preserve the skin and protect from the sun, Isalo, Madagascar, Africa
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
A tub full of green sea turtle hatchlings (Chelonia mydas), Tangkoko National Preserve on Sulawesi Island, Indonesia, Southeast Asia, Asia
Hot Springs at the Langarice Canyon, Vjosa (Vjose) River, Albania, Europe
Mount Foraker in the fall, Denali National Park and Preserve, Alaska, United States of America, North America
Rocky Coastline by the Atlantic Ocean, Dr. Bill Freedman Nature Preserve, Nature Conservancy of Canada, Nova Scotia, Canada, North America
Rocky Coastline by the Atlantic Ocean, Dr. Bill Freedman Nature Preserve, Nature Conservancy of Canada, Nova Scotia, Canada, North America
Mojave National Preserve, Granite Mountains in background, California, United States of America, North America
Rocky Coastline by the Atlantic Ocean, Dr. Bill Freedman Nature Preserve, Nature Conservancy of Canada, Nova Scotia, Canada, North America
A tub full of green sea turtle hatchlings (Chelonia mydas), Tangkoko National Preserve on Sulawesi Island, Indonesia, Southeast Asia, Asia
Rocky Coastline by the Atlantic Ocean, Dr. Bill Freedman Nature Preserve, Nature Conservancy of Canada, Nova Scotia, Canada, North America
Stranded ice on the low tide in front of Lamplugh Glacier, Glacier Bay National Park and Preserve, Alaska, United States of America, North America
Louisiana heron (Hydranassa tricolor), Big Cypress Nature Preserve, Florida, United States of America, North America
Mount McKinley in the fall, Denali National Park and Preserve, Alaska, United States of America, North America
Rocky Coastline by the Atlantic Ocean, Dr. Bill Freedman Nature Preserve, Nature Conservancy of Canada, Nova Scotia, Canada, North America
A mother brown bear (Ursus arctos) with her cubs on the beach in Lake Clark National Park and Preserve, Alaska, 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
Red squirrel (spruce squirrel) (Tamiasciurus hudsonicus) in a spruce tree, Denali National Park and Preserve, Alaska, United States of America, North America
Wild Iris flowers on the rocky coastline by the Atlantic Ocean, Dr. Bill Freedman Nature Preserve, Nature Conservancy of Canada, Nova Scotia, Canada, North America
Rainbow over South Marble Island in Glacier Bay National Park and Preserve, Southeast Alaska, United States of America, North America
Stranded ice on the low tide in front of Lamplugh Glacier, Glacier Bay National Park and Preserve, Alaska, United States of America, North America
Meadow near Williams known as Sunflower Flat Wildlife Preserve, normally a wetland now dry due to Arizona's drought, Arizona, 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
Male lesser goldfinch (Carduelis psaltria), Patagonia-Sonoita Creek Preserve, Patagonia, 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
Beaver (Castor canadensis) swimming, Denali National Park and Preserve, Alaska, United States of America, North America