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Patterns created by the small river on a sandy beach at sunset, Vik beach, Vestvagoy, Lofoten Islands, Norway, Scandinavia, Europe

Scenic views of the south Sawyer Glacier in Tracy Arm-Fords Terror Wilderness Area in Southeast Alaska, United States of America, North America

Dead juniper trunk and sandstone cones, Coyote Buttes Wilderness, Vermilion Cliffs National Monument, Arizona, United States of America, North America

Ruins of the farmyard adjoining the Clifden Castle, ruined manor house near Clifden, Connemara, County Galway, Connacht, Republic of Ireland

Misty morning, Malberg Lake, Boundary Waters Canoe Area Wilderness, Superior National Forest, Minnesota, United States of America, North America

Yellow expedition tents in front of Langtan Lirung, Kyanjin Gompa, Langtang Valley trek, Himalayas, Nepal, Asia

Close up of stupa (chorten) on a mountain slope in front of glaciers, Kyanjin Gompa, Langtang Valley trek, Himalayas, Nepal, Asia

Sawtooth Mountains, Sawtooth Wilderness, Sawtooth National Recreation Area, Rocky Mountains, Idaho, United States of America, North America

Fragile, foliose corals grow on a beautiful reef slope in Raja Ampat, Indonesia. This remote, equatorial region is known as the heart of the Coral Triangle. It is a popular destination for scuba divers and snorkelers.

Colorful gorgonians and reef-building corals grow in shallow water near the famous Blue Hole in 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.

A hairy frogfish (Antennarius striatus) uses its incredible camouflage to successfully capture prey in Lembeh Strait, Indonesia.

A snowflake moray eel (Echidna nebulosa) pokes its head out of a hole in Komodo National Park, Indonesia. This beautiful area harbors extraordinary marine biodiversity and is a popular destination for divers and snorkelers.

A flathead fish camouflages itself in the sandy seafloor of Komodo National Park, Indonesia. This tropical region in Indonesia is known for its spectacular coral 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 colorful crinoid clings to a coral reef slope in Komodo National Park, Indonesia. This tropical region in Indonesia is known for its spectacular coral reefs and high marine biodiversity.

A spine-cheeked anemonefish (Premnas biaculeatus) swims among the tentacles of its host anemone in Wakatobi National Park, Indonesia.

A colorful set of gorgonians, reef-building corals, and other invertebrates grow on a diverse reef in the Caribbean Sea.

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.

A banded sea snake (Laticauda colubrina) swims at the surface in Wakatobi National Park, Indonesia. This is one of the most venomous snakes in the world.

Detail of a colonial tunicate growing on a reef in Raja Ampat, Indonesia. This remote, tropical region is home to extraordinary marine biodiversity.

A beautiful coral reef thrives in the shallows of Alor, Indonesia. This remote region is home to a wide array of marine biodiversity.

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 colorful soft coral adorns a giant clam, Tridacna sp., growing on a healthy reef in Raja Ampat, Indonesia.

King penguin (Aptenodytes patagonicus) chicks (okum boys) at nesting colony at Salisbury Plain, South Georgia, Polar Regions

A small group of reindeer (Rangifer tarandus) near the abandoned whaling station in Stromness Bay, South Georgia, Polar Regions

Views of the abandoned whaling station in Stromness Bay on South Georgia in the Southern Ocean, Polar Regions

Delicate Arch at golden hour, Arches National Park, Moab, Grand County, Utah, United States of America, North America

Names of fishing boats painted on the rocks in Cross Sound with the Fairweather Mountain Range as backdrop, Alaska, United States of America, North America

A large stand of Arctic cotton (Eriophorum callitrix) in Franz Josef Land, Russia, Arctic Ocean, Eurasia

Adult male polar bear (Ursus maritimus) on multi-year ice floes in Franz Josef Land, Russia, Arctic Ocean, Eurasia

Hiking path traversing rock plains and rocky mountain top pass area of Colle del Turlo, Vercelli, Piedmont, Italian Alps, Italy, Europe

Beautiful panorama of the Monte Rosa massif South side summits at sunset, viewed from Alagana Valsesi, Alpe Pastore, Piedmont, Italy, Europe

Beautiful hiking path on steep rocky and grassy slopes in the Italian Alps, Colle del Turlo, Vercelli, Piedmont, Italy, Europe

Views of Gnalodden cliff in Hornsund, on the island of Spitsbergen in the Svalbard Archipelago, Norway, Arctic, Europe

The Negribreen (Negri Glacier), in Olav V Land on the island of Spitsbergen in the Svalbard Archipelago, Norway, Arctic, Europe

Views of the Vasilievbreen (Vasiliev Glacier), in Isbukta (Ice Bay) near the island of Spitsbergen in Svalbard, Norway, Arctic, Europe

A curious young polar bear (Ursus maritimus) on the ice in the Svalbard Archipelago, Norway, Arctic, Europe

An adult polar bear (Ursus maritimus) leaping from ice floe to ice floe in the Svalbard Archipelago, Norway, Arctic, Europe

An old, emaciated adult male polar bear (Ursus maritimus) desperately searching for food in the Svalbard Archipelago, Norway, Arctic, Europe

Adult Svalbard reindeer (Rangifer tarandus platyrhynchus) grazing on tundra in the Svalbard Archipelago, Norway, Arctic, Europe

Adult great blue heron (Ardea herodias cognata) hunting for green sea turtle hatchlings in the Galapagos Islands, UNESCO World Heritage Site, Ecuador, South America

Floss silk tree (Ceiba speciosa), Botanical Garden on El Nabatat Island (Kitchener's Island), Aswan, Egypt, North Africa, Africa

Guests from the Lindblad Expedition ship National Geographic Explorer kayaking in the Svalbard Archipelago, Norway, Arcitc, Europe

The Lindblad Expedition ship National Geographic Explorer in the Svalbard Archipelago, Norway, Arctic, Europe

Guests from the Lindblad Expeditions ship National Geographic Sea Bird in Southeast Alaska, United States of America, North America

Little boat between the icebergs of the Ilulissat Icefjord, UNESCO World Heritage Site, Western Greenland, Denmark, Polar Regions

Floating icebergs, Ilulissat Icefjord, UNESCO World Heritage Site, Western Greenland, Denmark, Polar Regions

Aerial of the Ilulissat Icefjord, UNESCO World Heritage Site, Western Greenland, Denmark, Polar Regions

Aerial of the Ilulissat Icefjord, UNESCO World Heritage Site, Western Greenland, Denmark, Polar Regions

Polar bear (Ursus Maritimus) on Axel Heiberg island, Nunavut, Canadian Arctic, Canada, North America

Polar bear (Ursus Maritimus) on Axel Heiberg island, Nunavut, Canadian Arctic, Canada, North America

Polar bear (Ursus Maritimus) on Axel Heiberg island, Nunavut, Canadian Arctic, Canada, North America