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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 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

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

View from Park Service platform where adult brown bears (Ursus arctos) forage for salmon, 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 sow (Ursus arctos) watching human activities at the Brooks River, Katmai National Park, 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 fin whale (Balaenoptera physalus) carcass in Holmabukta off the northwest of the Svalbard Archipelago, Norway

A rare sighting of an adult blue whale (Balaenoptera musculus) sub-surface feeding in the Svalbard Archipelago, Norway

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

Adult bearded seal (Erignathus barbatus) swimming amongst the ice in the Svalbard Archipelago, 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 Atlantin puffin (Fratercula arctica) during breeding season, Isfjardardjup, Westfjords region, Northwestern Iceland

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

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

Adult killer whale (Orcinus orca) surfacing with kelp on its flukes in Chatham Strait, Southeast Alaska, United States of America, Pacific Ocean, North America

A tiny cleaner shrimp removes parasites from a Black-finned snake eel (Ophichthus cephalozona) on a sandy seafloor in Indonesia. This tropical region, within the Coral Triangle, is home to an incredible variety of marine life.

A school of big-eye jacks (Caranx sexfasciatus) above a coral reef in the Solomon Islands. This region is known for its healthy fish populations.

A beautiful coral reef grows near a set of limestone islands 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.

Vibrant soft coral colonies grow on a reef dropoff in Lembeh Strait, Indonesia. This area is known for its spectacular marine biodiversity.

A beautiful starfish (Linckia laevigata) lays on a thriving reef in Indonesia. This tropical region, within the Coral Triangle, 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.

Colony of tunicates grow on a reef in Wakatobi National Park, Indonesia. This remote region is known for its incredible marine biodiversity and gorgeous reefs.

A hermit crab crawls across a reef in Raja Ampat, Indonesia. This remote, tropical region is home to extraordinary marine biodiversity.

A tiny shrimp (Periclimenes soror) lives on a pin-cushion starfish in Raja Ampat, Indonesia. This remote, tropical region is home to extraordinary marine biodiversity.

Colorful and flowering 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.

Bright sunlight shines down on lily pads growing 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 sleek blue shark (Prionace glauca) cruises through the cold waters off Cape Cod, Massachusetts, in the Atlantic Ocean. These beautiful elasmobranchs are found throughout the world in both temperate and tropical seas and are a species listed as Near Thre

A blue starfish on a beautiful coral reef in the shallows of 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.

Healthy corals thrive along the edge of a mangrove forest in a remote part of Raja Ampat, Indonesia.

Sunlight filters into the shadows of a thick mangrove forest 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.

A hawksbill sea turtle, Eretmochelys imbricata, swims over a beautiful reef 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.

A magnificent sea anemone, Heteractis magnifica, grows on a reef 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.

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.

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.

A Wonderpus, Wunderpus photogenicus, hunts for prey on the sandy seafloor in Lembeh Strait, Indonesia.

Several pink anemones cluster on top of a coral outcropping providing homes for several anemone fish, Maldives.

Adult Peale's Dolphin (Lagenorhynchus australis), bow-riding near New Island in the Falkland Islands, South America

Adult Peale's Dolphin (Lagenorhynchus australis), bow-riding near New Island in the Falkland Islands, South America

Adult Subantarctic Skua (Catharacta antarctica lonnbergi) cleaning itself in glacier run off at Stromness Bay, South Georgia, Polar Regions

Southern right whale (Eubalaena australis) flukes-up dive near whale watching boat in Puerto Pyramides, Argentina, South America

Adult bald eagle (Haliaeetus leucocephalus) on iceberg near Johns Hopkins Glacier, Southeast Alaska, United States of America, North America

Black-legged kittiwake (Rissa tridactyla) feeding on small fish in Tracy Arm, Southeast Alaska, United States of America, North America

Adult brown bear pair (Ursus arctos) fishing for pink salmon at Pavlof Harbor on Chichagof Island, Southeast Alaska, United States of America, North America

Adult humpback whale (Megaptera novaeangliae) flukes-up dive in Inian Pass, Southeast Alaska, Pacific Ocean, United States of America, North America

Adult sea otter (Enhydra lutris kenyoni) mother with her pup on her chest in Inian Pass, Southeastern Alaska, Pacific Ocean, United States of America, North America

Northern (Steller) sea lion (Eumetopias jubatus) bull feeding on fisherman's scraps near Petersburg, Alaska, United States of America, North America

Harbor seal (Phoca vitulina) hauled out on ice calved from South Sawyer Glacier, Southeast Alaska, United States of America, North America

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

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

An adult bull killer whale (Orcinus orca) surfacing in Johnstone Strait, British Columbia, Canada, Pacific Ocean, North America

An adult bull killer whale (Orcinus orca) surfacing in Johnstone Strait, British Columbia, Canada, Pacific Ocean, North America

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

Adult kelp gull (Larus dominicanus), nesting on lichen covered rocks on Half Moon Island in Antarctica, Southern Ocean, Polar Regions

Curious crabeater seals (Lobodon carcinophaga), swimming near iceberg at Booth Island near the Antarctic Peninsula, Polar Regions

Guadalupe fur seals (Arctocephalus townsendi), underwater on Las Animas Island, Baja California Sur, Sea of Cortez, Mexico, North America

Juvenile puffin (Fratercula arctica) on the water near the island of Bolscheoya in the Svalbard Archipelago, Norway, Arctic, Europe

Adult arctic tern (Sterna paradisaea) feeding on small fish on Spitsbergen Island in the Svalbard Archipelago, Norway, Arctic, Europe

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

Net fisherman in rowing boat, village of Ramadi, west bank of the Nile south of Edfu, Egypt, North Africa, Africa

Spotted eagle ray (Aetobatus narinari) underwater at Leon Dormido Island off San Cristobal Island, Galapagos, UNESCO World Heritage Site, Ecuador, South America

Galapagos brown pelican (Pelecanus occidentalis urinator) feeding in the Galapagos Island Archipelago, UNESCO World Heritage Site, Ecuador, South America

Greater flamingos (Phoenicopterus ruber) foraging for small pink shrimp in saltwater lagoon in the Galapagos Islands, UNESCO World Heritage Site, Ecuador, South America

Young Galapagos sea lion (Zalophus wollebaeki) underwater in the Galapagos Island Archipelago, UNESCO World Heritage Site, Ecuador, South America

Adult gentoo penguin (Pygoscelis papua), returning from the sea at Booth Island, Antarctica, Southern Ocean, Polar Regions

A myriad of hard and soft corals, as well as tropical reef fish at Vatu-I-Ra Conservation Park on Viti Levu, Fiji, South Pacific, Pacific

A myriad of hard and soft corals at Vatu-I-Ra Conservation Park on Viti Levu, Fiji, South Pacific, Pacific

A myriad of hard and soft corals, as well as tropical reef fish at Vatu-I-Ra Conservation Park on Viti Levu, Fiji, South Pacific, Pacific