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Nurse sharks (Ginglymostoma cirratum), being fed in Hol Chan Marine Preserve, inside the Mesoamerican Barrier Reef, Belize
Mangrove snappers (Lutjanus griseus), schooling in Hol Chan Marine Preserve, inside the Mesoamerican Barrier Reef, Belize
Nurse shark (Ginglymostoma cirratum), with boat in Hol Chan Marine Preserve, inside the Mesoamerican Barrier Reef, Belize
Nurse shark (Ginglymostoma cirratum), with boat in Hol Chan Marine Preserve, inside the Mesoamerican Barrier Reef, Belize
Nurse sharks (Ginglymostoma cirratum), massing in Hol Chan Marine Preserve, inside the Mesoamerican Barrier Reef, Belize
Nurse sharks (Ginglymostoma cirratum), massing in Hol Chan Marine Preserve, inside the Mesoamerican Barrier Reef, Belize
Nurse shark (Ginglymostoma cirratum), on the sand in Hol Chan Marine Preserve, inside the Mesoamerican Barrier Reef, Belize
Nurse shark (Ginglymostoma cirratum), on the sand in Hol Chan Marine Preserve, inside the Mesoamerican Barrier Reef, Belize
A myriad of fish and coral underwater at Hol Chan Marine Preserve, inside the Mesoamerican Barrier Reef, Belize
A myriad of fish and coral underwater at Hol Chan Marine Preserve, inside the Mesoamerican Barrier Reef, Belize
Glacier Bay National Park and Preserve in southeast Alaska, United States of America
Adult caribou (Rangifer tarandus) in Denali National Park, Alaska, United States of America
Flowering cholla cactus (Cylindropuntia spp), in the Sweetwater Preserve, Tucson, Arizona, United States of America, North America
Male Gambel's Quail (Callipepla gambelii) scratching for food, Henderson Bird Viewing Preserve, Henderson, Nevada, United States of America, North America
Perito Moreno Glacier, UNESCO World Heritage Site, around El Calafate, Santa Cruz province, Patagonia, Argentina, South 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 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
African elephants (Loxodonta africana) at sunset, Nxai Pan National Park, Botswana, Africa
The Little Teepees on the north side of Haystack Mesa in Petrified Forest National Park, Arizona, United States of America, North America
Dead Wash Valley in Petrified Forest National Park, Arizona, United States of America
Horse-eye jacks (Caranx latus), schooling in Hol Chan Marine Preserve, inside the Mesoamerican Barrier Reef, Belize
Horse-eye jacks (Caranx latus), schooling in Hol Chan Marine Preserve, inside the Mesoamerican Barrier Reef, Belize
Nurse sharks (Ginglymostoma cirratum), being fed in Hol Chan Marine Preserve, inside the Mesoamerican Barrier Reef, Belize
Nurse sharks (Ginglymostoma cirratum), being fed in Hol Chan Marine Preserve, inside the Mesoamerican Barrier Reef, Belize
Nurse sharks (Ginglymostoma cirratum), being fed in Hol Chan Marine Preserve, inside the Mesoamerican Barrier Reef, Belize
Nurse sharks (Ginglymostoma cirratum), being fed in Hol Chan Marine Preserve, inside the Mesoamerican Barrier Reef, Belize
Nurse sharks (Ginglymostoma cirratum), being fed in Hol Chan Marine Preserve, inside the Mesoamerican Barrier Reef, Belize
Spotted eagle ray (Aetobatus narinari), Hol Chan Marine Preserve, inside the Mesoamerican Barrier Reef, Belize
A myriad of fish and coral underwater at Hol Chan Marine Preserve, inside the Mesoamerican Barrier Reef, Belize
A myriad of fish and coral underwater at Hol Chan Marine Preserve, inside the Mesoamerican Barrier Reef, Belize
A myriad of fish and coral underwater at Hol Chan Marine Preserve, inside the Mesoamerican Barrier Reef, Belize
Glacier Bay National Park and Preserve in southeast Alaska, United States of America
Scenes from Glacier Bay National Park and Preserve in southeast Alaska, United States of America
View of the Polychrome Mountains from lookout point on the park road inside Denali National Park and Preserve, Alaska, United States of America
Scenic view of Glacier Bay National Park and Preserve, UNESCO World Heritage Site, Southeast Alaska, Pacific Ocean, United States of America, North America
Grand Canyon, Pima Point, Grand Canyon National Park, UNESCO World Heritage Site, Arizona, United States of America, North America
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
Beaver (Castor canadensis) swimming with food, Denali National Park and Preserve, Alaska, United States of America, North America
Snow-capped mountains and tundra in fall color, Denali National Park and Preserve, Alaska, United States of America, North America
Grizzly bear (Ursus horribilis) in the fall, Denali National Park and Preserve, Alaska, 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
Crystal Mesa above Crystal Creek west of Hamilili Point 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
A view of Tarr Inlet in Glacier Bay National Park and Preserve, UNESCO World Heritage Site, Southeast Alaska, United States of America, North America
Grizzly bear (Ursus arctos horribilis) (Coastal brown bear), Katmai National Park and Preserve, Alaska, United States of America, North America
Full moon on saguaro cactus (Carnegiea gigantea), Sweetwater Preserve, Tucson, Arizona, United States of America, North America
Monteverde Cloud Forest Biological Preserve, Puntarenas Province, Costa Rica, Central America
An adult stork-billed kingfisher (Pelargopsis capensis), perched in Tangkoko National Preserve on Sulawesi Island, Indonesia, Southeast Asia, Asia
Hot Springs at the Langarice Canyon, Vjosa (Vjose) River, Albania, Europe
Crescent Lake, Lake Clark National Park and Preserve, Alaska, United States of America, North America
An adult brown bear (Ursus arctos) fishing for salmon at Brooks Falls, Katmai National Park and Preserve, Alaska, United States of America, North America
Mount Foraker in the fall, Denali National Park and Preserve, Alaska, 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
Grizzly bear (brown bear) (Ursus arctos) at Crescent Lake, Lake Clark National Park and Preserve, Alaska, United States of America, North America
Portrait of young woman wearing dry mud, used to preserve the skin and protect from the sun, Isalo, Madagascar, Africa
Rocky Coastline by the Atlantic Ocean, Dr. Bill Freedman Nature Preserve, Nature Conservancy of Canada, Nova Scotia, Canada, North America
Flowering prickly pear cactus (Opuntia ficus-indica), in the Sweetwater Preserve, Tucson, Arizona, United States of America, North America
Roman town of Herculaneum, UNESCO World Heritage Site, Campania, Italy, Europe
Giant saguaro cactus (Carnegiea gigantea) at dawn in the Sweetwater Preserve, Tucson, 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
Mount Redoubt and Crescent Lake, Lake Clark National Park and Preserve, Alaska, United States of America, North America
State Historical and Memorial Preserve The Battle of Stalingrad, Volgograd, Volgograd Oblast, Russia, Eurasia
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
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
Giant saguaro cactus (Carnegiea gigantea) at night in the Sweetwater Preserve, Tucson, 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
Beaver (Castor canadensis) hauling a log up over its dam, Denali National Park and Preserve, Alaska, United States of 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
Grizzly (brown) bear (Ursus arctos) at Crescent Lake, Lake Clark National Park and Preserve, Alaska, United States of America, North America
Male Gambel's Quail (Callipepla gambelii), Henderson Bird Viewing Preserve, Henderson, Nevada, United States of America, North America
Beaver (Castor canadensis) swimming, Denali National Park and Preserve, Alaska, United States of America, North America
Sunrise on saguaro cactus in bloom (Carnegiea gigantea), Sweetwater Preserve, Tucson, Arizona, 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
A pointed peak of bentonite in Hamilili Valley on the south end of Petrified Forest National Park, 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
Grizzly bear (Ursus arctos horribilis) (Coastal brown bear) eating a salmon, Katmai National Park and Preserve, Alaska, United States of America, North America
Fruiting saguaro cactus (Carnegiea gigantea), in bloom in June, Sweetwater Preserve, Tucson, 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
Adult brown bears (Ursus arctos) fishing for salmon at Brooks Falls, Katmai National Park and Preserve, 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
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
The super full moon rising over saguaro cactus (Carnegiea gigantea), Sweetwater Preserve, Tucson, Arizona, United States of America, North America
Louisiana heron (Hydranassa tricolor), Big Cypress Nature Preserve, Florida, 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
Mount McKinley in the fall, Denali National Park and Preserve, Alaska, United States of America, North America
Grizzly bear (Ursus arctos horribilis) (Coastal brown bear) sow and spring cub walking along a stream, Katmai National Park and Preserve, Alaska, United States of America, North America
Grizzly (brown) bear (Ursus arctos) at Crescent Lake, Lake Clark National Park and Preserve, Alaska, United States of America, North America
Beaver (Castor canadensis) swimming with food, Denali National Park and Preserve, Alaska, United States of America, North America
Mount Foraker in the fall, Denali National Park and Preserve, Alaska, United States of America, North America
Grizzly bear (Ursus arctos horribilis) (Coastal brown bear) cub, Katmai 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
Giant saguaro cactus (Carnegiea gigantea), at dawn in the Sweetwater Preserve, Tucson, Arizona, United States of America, North America
Rainbow over South Marble Island in Glacier Bay National Park and Preserve, Southeast Alaska, United States of America, North America
The super full moon rising over saguaro cactus (Carnegiea gigantea), Sweetwater Preserve, Tucson, Arizona, 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