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Views of the glaciers and mountains of Drygalski Fjord on the southeast side of South Georgia, Southern Ocean, Polar Regions

Views of the abandoned whaling station in Prince Olav Harbor on South Georgia, Southern Ocean, Polar Regions

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

Ice held up to the sun near the Antarctic Peninsula during the summer months, Southern Ocean, Polar Regions

A view of icebergs in the Lemaire Channel on the west side of the Antarctic peninsula in Antarctica, Polar Regions

Panorama overlooking the vast high altitude mountains of Langtang Valley Trek with snow plains near Kyanjin Gompa, Himalayas of Nepal, Asia

Guests from the Lindblad Expedition ship National Geographic Endeavour in the Galapagos Islands, UNESCO World Heritage Site, Ecuador, South America

Guests from the Lindblad Expedition ship National Geographic Endeavour in the Galapagos Islands, UNESCO World Heritage Site, Ecuador, South America

Guest from the Lindblad Expedition ship National Geographic Endeavour in the Galapagos Islands, UNESCO World Heritage Site, Ecuador, South America

Views of the Chilean Antarctic refuge hut Jorge Bonnen Rivera situated on Hut Point on the Antarctic Peninsula, Antarctica, Polar Regions

Views of the Chilean Antarctic refuge hut Jorge Bonnen Rivera situated on Hut Point on the Antarctic Peninsula, Antarctica, Polar Regions

Hikers on path along levada (aqueduct) of Green Cauldron (Caldeirao Verde), Madeira island, Atlantic Ocean, Portugal

Two hikers in high altitude winter valley on the Langtang trek in Kyanjin Gompa, Himalayas, Nepal, Asia

Aerial drone view of particular ice textures formed in the Hoffelsjokull glacier following global warming, Iceland, Polar Regions

Juvenile mantled howler monkey (Alouatta palliata) in Pacific coast forest, known for their loud call, Esperanza, Nosara, Guanacaste, Costa Rica

Four-wheel drive vehicle in the Sharqiya Sands, formerly Wahiba Sands, desert region, Sultanate of Oman, Arabian Peninsula

Isolated tree among sandstone rock formation in the desert canyons of the Ashar Valley, Medina Province, Saudi Arabia

Mountain landscape on Kilimanjaro, 5895 metres, UNESCO, highest mountain in Africa and one of the Seven Summits, Tanzania

View of snow covered Aosta Valley from Pavillon du Mont Frety in winter, Courmayeur, Aosta Valley, Italian Alps, Italy

Glacial iceberg detail from ice calved off the Sawyer Glacier in Tracy Arm, Southeast Alaska, United States of America

Glacial iceberg detail from ice calved off the LeConte Glacier near Petersberg, Southeast Alaska, United States of America

Glacial iceberg detail from ice calved off the LeConte Glacier near Petersberg, Southeast Alaska, United States of America

Adult humpback whale (Megaptera novaeangliae), surfacing near researchers in Zodiac at sunset, Iceland

Gentoo penguins (Pygoscelis papua) and expedition tourists on Cuverville Island, Danco Coast, Antarctic Peninsula, Antarctica, Polar Regions

Polar Bear (Ursus maritimus) inspecting the pole of an expedition ship, Svalbard Archipelago, Arctic, Norway, Europe

Castle Harbour, Bermuda. The wreck of the Sea Fern deliberately sunk in 1930 as a breakwater for a deep sea diving expedition.

On the Trail with Pack Mules transporting gear to Kyanjin Gompa, Langtang Valley trek, Himalayas, Nepal, Asia

Sea lions (Otaria flavescens) in the Beagle Channel, Ushuaia, Tierra del Fuego, Patagonia, Argentina, South America

Macaroni penguins (Eudyptes chrysolophus) scrambling up steep cliffs at Hercules Bay on South Georgia Island, Polar Regions

Antarctic tern (Sterna vittata), on the wreck of the Guvernoren in the Enterprise Islands, Antarctica, Southern Ocean, Polar Regions

A large pod of Gerlache Strait type B killer whales (Orcinus orca), traveling and socializing in Gerlache Strait, Antarctica, Polar Regions

Tabular icebergs in and around the Weddell Sea during the summer months, Antarctica, Southern Ocean, Polar Regions

View of Roald Amundsen monument sculpture at The Fram Museum, Bygdoynesveien, Oslo, Norway, Scandinavia, Europe

View of Roald Amundsen monument sculpture at The Fram Museum, Bygdoynesveien, Oslo, Norway, Scandinavia, Europe

Curious adult bull walrus (Odobenus rosmarus rosmarus) approach the ship at Moffen Island in the Svalbard Archipelago, Norway, Arctic, Europe

Guests from the Lindblad Expedition ship National Geographic Explorer at Hornsund (Horn Sound) in the Svalbard Archipelago, Norway, Arctic, Europe

The Lindblad Expedition ship National Geographic Explorer near glacial run-off in the Svalbard Archipelago, Norway, Arctic, Europe

The Lindblad Expedition ship National Geographic Explorer near glacial run-off in the Svalbard Archipelago, Norway, Arctic, Europe

The Lindblad Expedition ship National Geographic Explorer near glacial run-off in the Svalbard Archipelago, Norway, Arctic, Europe

CT Ticknor, staff member from the Lindblad Expedition ship National Geographic Explorer using binoculars in the Svalbard Archipelago, Norway, Arctic, Europe

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

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

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

The Lindblad Expeditions ship National Geographic Sea Bird operating in Glacier Bay National Park, UNESCO World Heritage Site, Southeast Alaska, United States of America, North America

Guest from the Lindblad Expeditions ship National Geographic Sea Bird behind a mushroom or toadstool in Southeast Alaska, United States of America, North America

Guests from the Lindblad Expeditions ship National Geographic Sea Bird during Zodiac operations near a feeding sea otter in Southeast Alaska, United States of America, North America

Guests from the Lindblad Expeditions ship National Geographic Sea Bird in Glacier Bay National Park, UNESCO World Heritage Site, Southeast Alaska, United States of America, North America

Guests from the Lindblad Expeditions ship National Geographic Sea Bird during Zodiac operations in Tracy Arm, Southeast Alaska, United States of America, North America

Guests from the Lindblad Expeditions ship National Geographic Sea Bird during Zodiac operations in Tracy Arm, Southeast Alaska, United States of America, North America

Ice crystals, Science Center, Ilulissat Icefjord, UNESCO World Heritage Site, Western Greenland, Denmark, Polar Regions

Views of the glaciers and mountains of Drygalski Fjord on the southeast side of South Georgia, Southern Ocean, Polar Regions

Views of the abandoned whaling station in Prince Olav Harbor on South Georgia, Southern Ocean, Polar Regions

Views of the abandoned whaling station in Prince Olav Harbor on South Georgia, Southern Ocean, Polar Regions

Views of the abandoned whaling station in Prince Olav Harbor on South Georgia, Southern Ocean, Polar Regions

Motocycle on mountain road in Andean mountains near Rainbow mountain, Pitumarca District, Cuzco Region, Peru, South America

Reflections of icebergs in the calm water photographed from an expedition ship operating in Antarctica, Southern Ocean, Polar Regions

Expedition ship Europa operating from Ushuaia, Argentina to the Antarctic Peninsula in Antarctica, Southern Ocean, Polar Regions

Argentine ship the Puerto Deseado operating from Ushuaia, Argentina to the Antarctic Peninsula in Antarctica, Southern Ocean, Polar Regions

Argentine ship the Almirante Viel operating from Ushuaia, Argentina to the Antarctic Peninsula in Antarctica, Southern Ocean, Polar Regions

Tourist photographing a wild Galapagos giant tortoise (Geochelone elephantopus) feeding on the upslope grasslands of Santa Cruz Island, Galapagos, UNESCO World Heritage Site, Ecuador, South America

A small pod of killer whales (Orcinus orca) off the west coast of Isabela Island in the Galapagos Island Archipelago, UNESCO World Heritage Site, Ecuador, South America

Adult South Georgia pipit (Anthus antarcticus) feeding at low tide on Prion Island, Bay of Isles, South Georgia, Polar Regions

Landing with a zodiac in Ainsworth Bay, Alberto de Agostini National Park, Tierra del Fuego, Patagonia, Chile, South America

Excursion with zodiac around the Pia Glacier, Cordillera Darwin, Northeast branch of the Beagle Channel, Tierra del Fuego, Patagonia, Chile, South America

An adult red-footed booby (Sula sula), in its white color morph plumage in flight over the ocean in Palau, Micronesia, Pacific