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Adult brown bear (Ursus arctos) foraging for salmon at the Brooks River, Katmai National Park, Alaska, United States of America

Adult brown bears (Ursus arctos) disputing fishing rights for salmon at the Brooks River, Katmai National Park, Alaska, United States of America

Adult brown bears (Ursus arctos) courtship behaviour, Brooks River, Katmai National Park near Bristol Bay, Alaska, United States of America

Adult brown bears (Ursus arctos) foraging for salmon at the Brooks River, Katmai National Park, Alaska, United States of America

Adult brown bear (Ursus arctos) foraging for salmon at the Brooks River, Katmai National Park, Alaska, United States of America

Adult brown bear (Ursus arctos) foraging for salmon at the Brooks River, Katmai National Park, Alaska, United States of America

Hottentot fig (Carpobrotus edulis) flower, South African succulent plant now found in Europe, Australia and the Americas, Bermuda

Adult dovekie (Alle alle alle) breeding area on the island of Bolscheoya in the Svalbard Archipelago, Norway

Adult bearded seal (Erignathus barbatus) swimming amongst the ice in the Svalbard Archipelago, Norway

Adult white-beaked dolphin (Lagenorhynchus albirostris) surfacing in the Svalbard Archipelago, Norway

Adult black-legged kittiwakes (Rissa tridactyla) on ice in the Svalbard Archipelago, Barents Sea, Norway

Adult Svalbard reindeer (Rangifer tarandus platyrhynchus) grazing within the town limits of Longyearbyen, Svalbard, Norway

Adult Svalbard reindeer (Rangifer tarandus platyrhynchus) grazing within the town limits of Longyearbyen, Svalbard, Norway

Adult male common eider ducks (Somateria mollissima) in breeding plumage in the Svalbard Archipelago, Norway

Brunnichs guillemot (Uria lomvia) pair taking flight at Cape Fanshawe in the Svalbard Archipelago, Norway

Adult great skua (Stercorarius skua) being harassed by Arctic terns (Sterna paradisaea) guarding their nest sites, Svalbard, Norway

A curious young polar bear (Ursus maritimus), approaches the ship on Spitsbergen in the Svalbard Archipelago, Norway

A curious young polar bear (Ursus maritimus), approaches the ship on Spitsbergen in the Svalbard Archipelago, Norway

Adult black-legged kittiwakes (Rissa tridactyla) in flight in the Svalbard Archipelago, Barents Sea, Norway

Adult male polar bear (Ursus maritimus), on multi-year ice floes off the eastern coast of Spitsbergen in the Svalbard, Norway

Adult male polar bear (Ursus maritimus), on multi-year ice floes off the eastern coast of Spitsbergen in the Svalbard, Norway

A curious young polar bear (Ursus maritimus), approaches the ship on Spitsbergen in the Svalbard Archipelago, Norway

A curious young polar bear (Ursus maritimus), approaches the ship on Spitsbergen in the Svalbard Archipelago, Norway

Adult polar bear (Ursus maritimus) in Holmabukta on the northwest coast of Spitsbergen in the Svalbard Archipelago, Norway

Two young polar bears (Ursus maritimus), feeding side-by-side on a fresh bearded seal kill on Spitsbergen, Svalbard, Norway

Mother polar bear (Ursus maritimus) and cub-of-the-year disputing then allowing a male bear to feed on a fin whale, Svalbard Archipelago, Norway

Mother polar bear (Ursus maritimus), with cub of the year in Holmabukta in the Svalbard Archipelago, Norway

Adult polar bear (Ursus maritimus) in Holmabukta on the northwest coast of Spitsberge, Svalbard Archipelago, Norway

Mother polar bear (Ursus maritimus), with cub of the year in Holmabukta in the Svalbard Archipelago, Norway

Mother polar bear (Ursus maritimus), with cub of the year in Holmabukta in the Svalbard Archipelago, Norway

Young male polar bear (Ursus maritimus), feeding on a fin whale carcass in Holmabukta in the Svalbard Archipelago, Norway

Adult polar bear (Ursus maritimus), on multi-year ice floes off the coast of Edgeoya, Svalbard, Norway

Young curious female polar bear (Ursus maritimus), on fast ice near Hinlopen Strait in the Svalbard Archipelago, Norway

Mother polar bear (Ursus maritimus) with cub of the year feeding near a fin whale carcass in Svalbard, Norway

A mother polar bear (Ursus maritimus), with cub of the year feeding on a fin whale carcass in Holmabukta, Svalbard, Norway

Young curious female polar bear (Ursus maritimus), on fast ice near Hinlopen Strait in the Svalbard Archipelago, Norway

Young curious female polar bear (Ursus maritimus), on fast ice near Hinlopen Strait in the Svalbard Archipelago, Norway

Starling murmuration at sunset with remains of the West Pier in the background, City of Brighton and Hove, East Sussex, England, United Kingdom

Large trees in forest surrounding the Center for rescue and recovery of black bears, Kuang Si, Luang Prabang, northern Laos

Adult Atlantin puffin (Fratercula arctica) during breeding season, Isfjardardjup, Westfjords region, Northwestern Iceland

Adult Atlantin puffin (Fratercula arctica) during breeding season, Isfjardardjup, Westfjords region, Northwestern Iceland

Adult black guillemot (Cepphus grylle) in summer plumage near Vigur Island in Isafjardardjup Bay, Iceland

Adult male hooded seal (Cystophora cristata) hauled out on pack-ice in seasof Denmark Strait, between Iceland and Greenland

Cape fox (Vulpes chama) cubs playing, Kgalagadi Transfrontier Park, Northern Cape, South Africa, Africa

American White Pelican (Pelecanus erythrorhynchos) in flight shortly after taking off, Sonny Bono Salton Sea National Wildlife Refuge, California, United States of America, North America

White-crowned Sparrow (Zonotrichia leucophrys), Caballo Lake State Park, New Mexico, United States of America, North America

Caribbean Flamingo (American Flamingo) (Phoenicopterus ruber ruber) with beak nestled in the feathers of its back, in captivity, Rio Grande Zoo, Albuquerque Biological Park, Albuquerque, New Mexico, United States of America, North America

Detail of anchor coral tentacles (Euphyllia sp.) growing on a reef in Indonesia. This area is known for its high marine biodiversity.

Detail of a mushroom coral (Fungia sp.) 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 nudibranch (Nembrotha kubaryana) crawls slowly across a reef near the island of Sulawesi, Indonesia. This beautiful, tropical region is home to an incredible variety of marine life.

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

A large roughtail stingray (Dasyatis centroura) rests on the seafloor near Turneffe Atoll, Belize. This species is found throughout much of the Atlantic near reefs.

Christmas tree worms (Spirobranchus giganteus) grow on a coral reef in Wakatobi National Park, Indonesia. This remote region is known for its incredible marine biodiversity and gorgeous reefs.

A pink anemonefish (Amphiprion perideraion) swims among the tentacles of its host anemone in Wakatobi National Park, Indonesia. This remote region is known for its incredible marine biodiversity and gorgeous reefs.

A translucent shrimp (Vir philippinensis) crawls on bubble coral in Wakatobi National Park, Indonesia. This remote region is known for its incredible marine biodiversity and gorgeous reefs.

A well-camouflaged devil scorpionfish (Scorpaenopsis diabolus) waits to ambush prey on a reef in Raja Ampat, Indonesia. This remote, tropical region is home to extraordinary marine biodiversity.

Mother and calf humpback whales, Megaptera novaeangliae, swim in the clear, blue waters of the Caribbean Sea.

A humpback whale, Megaptera novaeangliae, raises its powerful fluke out of the blue waters of the Caribbean Sea and slams it down on the surface to communicate.

A magnificent humpback whale, Megaptera novaeangliae, swims in the clear, blue waters of the Caribbean Sea.

An ornate ghost pipefish, Solenostomus paradoxus, hovers near a hydroid on a reef in Raja Ampat, Indonesia.

A colorful nudibranch, Hypselodoris tryoni, crawls across a sandy sea floor in Komodo National Park, Indonesia. This tropical area in the Lesser Sunda Islands is known for both its amazing marine biodiversity as well its infamous dragons.

Skull of an adult killer whale (Orcinus orca), on display inside the town of Stanley, Falkland Islands, South Atlantic Ocean, South America

Small pod of eight to ten 'Type A' Oceanic killer whales (Orcinus orca), hunting near Stanley, Falkland Islands, South America

Brown capuchin monkey (Cebus apella) (Sapajus apella) on tree, Tambopata National Reserve, Puerto Maldonado, Tambopata Province, Madre de Dios, Peru, South America

Brown capuchin monkey (Cebus apella) (Sapajus apella) on tree, Tambopata National Reserve, Puerto Maldonado, Tambopata Province, Madre de Dios, Peru, South America

Close-up of Collared treerunner (Plica plica) on tree, Tambopata National Reserve, Puerto Maldonado, Tambopata Province, Madre de Dios, Peru, South America

Southern elephant seal (Mirounga leonina) bull holding adult female in the surf to mate with her, South Georgia, Polar Regions

Southern elephant seal (Mirounga leonina) bull holding adult female in the surf to mate with her, South Georgia, Polar Regions

Southern right whale (Eubalaena australis) adult female flukes-up to catch the wind in Puerto Pyramides, Argentina, South America

Southern right whale (Eubalaena australis) adult female lifting both her head and flukes out of the water in Argentina, South America

Two ducks and one egg, Eu, Seine-Maritime department, Haute-Normandy region, northern France, Europe

A close up view of a beetle on hogweed (Heracleum spp) found in the Solovetsky Islands, Arkhangelsk Oblast, White Sea, Russia, Arctic, Europe

Seagull nesting on the Lihou islet, Island of Guernsey, Bailiwick of Guernsey, British Crown dependency, English Channel, Europe

Chinstrap penguins (Pygoscelis antarctica), at breeding colony at Half Moon Island, Antarctica, Southern Ocean, Polar Regions

Chinstrap penguins (Pygoscelis antarctica), ecstatic display at breeding colony at Half Moon Island, Antarctica, Polar Regions

Southern elephant seals (Mirounga leonina), hauled out for their annual catastrophic molt (moult) on the beach at Snow Island, Antarctica, Polar Regions