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Group of striped dolphins (Stenella coeruleoalba) swimming, Strait of Gibraltar, Costa de la Luz, Andalucia (Andalusia), Spain, Europe
Tourist photographing Southern Right whale (Eubalaena australis) mother and calf, from Marine Dynamics whale watching boat, Western Cape, South Africa, Africa
Southern right whale, Eubalaena australis, Hermanus, South Africa
Sea lions (Otaria flavescens) in the Beagle Channel, Ushuaia, Tierra del Fuego, Patagonia, Argentina, South America
Pack Ice Type B killer whales (Orcinus orca), finding a leopard seal (Hydrurga leptonyx), on an ice floe in Antarctica, Polar Regions
A small pod of pack Ice type B killer whales (Orcinus orca), just after making a Weddell seal kill in the Lemaire Channel, Antarctica, Polar Regions
Small pod of eight to ten 'Type A' Oceanic killer whales (Orcinus orca), hunting near Stanley, Falkland Islands, South America
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
Beachmaster bull southern elephant seal (Mirounga leonina) attempting to mate at Peggotty Bluff, South Georgia, Polar Regions
Beachmaster bull southern elephant seal (Mirounga leonina) attempting to mate at Peggotty Bluff, South Georgia, Polar Regions
Bull southern elephant seal (Mirounga leonina) issuing a bellowing challenge at Gold Harbour on South Georgia Island, Polar Regions
Female southern elephant seals (Mirounga leonina) showing slight aggression at Moltke Harbor on South Georgia, Polar Regions
Adult bull southern elephant seal (Mirounga leonina) issuing a bellowing challenge at Gold Harbour on South Georgia, Polar Regions
Southern elephant seal (Mirounga leonina) challenger bull in the surf at Gold Harbour on South Georgia Island, Polar Regions
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
Polar bear on ice looking at camera, Svalbard and Jan Mayen, Norway, 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 surfacing head on in Puerto Pyramides, Golfo Nuevo, Argentina, South America
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
Adult humpback whales (Megaptera novaeangliae) co-operatively bubble-net feeding in Snow Pass, Alaska, United States of America, North America
Adult humpback whales (Megaptera novaeangliae) co-operatively bubble-net feeding in Snow Pass, Alaska, United States of America, North America
Adult humpback whales (Megaptera novaeangliae) co-operatively bubble-net feeding in Snow Pass, 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
Northern (Steller) sea lions (Eumetopias jubatus) hauled out at South Marble Island in Glacier Bay National Park, UNESCO World Heritage Site, Alaska, United States of America, North America
Adult female sea otter (Enhydra lutris kenyoni) eating urchins she has gathered off the sea floor in Inian Pass, Southeastern Alaska, Pacific Ocean, United States of America, North America
Adult female sea otter (Enhydra lutris kenyoni) eating urchins she has gathered off the sea floor in Inian Pass, Southeastern Alaska, Pacific Ocean, United States of America, North America
Northern sea lions (Eumetopias jubatus) hauled out on South Marble Island in Glacier Bay National Park, UNESCO World Heritage Site, Alaska, United States of America, North America
Harbor seals (Phoca vitulina) hauled out on ice calved from South Sawyer Glacier, Southeast 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
A large pod of Gerlache Strait type B killer whales (Orcinus orca), traveling and socializing in Gerlache Strait, Antarctica, Polar Regions
A large pod of Gerlache Strait type B killer whales (Orcinus orca), traveling and socializing in Gerlache Strait, Antarctica, Polar Regions
Humpback whale (Megaptera novaeangliae), surfacing off Half Moon Island in the South Shetland Island Group, 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
Southern elephant seals (Mirounga leonina), hauled out for their annual catastrophic molt (moult) on the beach at Snow 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
Guadalupe fur seals (Arctocephalus townsendi), underwater on Las Animas Island, Baja California Sur, Sea of Cortez, Mexico, North America
Young Galapagos sea lion bulls (Zalophus wollebaeki) mock-fighting in the Galapagos Islands, UNESCO World Heritage Site, Ecuador, South America
A curious young polar bear (Ursus maritimus) approaches the National Geographic Explorer in the Svalbard Archipelago, Norway, Arctic, Europe
Lindblad guests watching adult humpback whales (Megaptera novaeangliae) co-operatively bubble-net feeding near Tenakee Springs, Southeast Alaska, United States of America, North America Pacific Ocean
Zodiac with Lindblad guests near harbor seal (Phoca vitulina) hauled out on ice calved from the South Sawyer Glacier in the Tracy Arm-Ford's Terror Wilderness area, Southeast Alaska, United States of America, 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
Subantarctic fur seal (Arctocephalus tropicalis) hauled out on the shore of Nightingale Island, Tristan da Cunha Island Group, South Atlantic Ocean
A small pod of killer whales (Orcinus orca) off Ascension Island in the Tropical Atlantic Ocean, South Atlantic Ocean
Antarctic fur seal pups (Arctocephalus gazella) near the abandoned whaling station at Stromness Bay on South Georgia, Polar Regions
Antarctic fur seal pup (Arctocephalus gazella) playing in the kelp on Prion Island in the Bay of Isles on South Georgia, Polar Regions
Antarctic fur seal pup (Arctocephalus gazella) near the abandoned whaling station at Stromness Bay on South Georgia, Polar Regions
Antarctic fur seal pups (Arctocephalus gazella) near the abandoned whaling station at Stromness Bay on South Georgia, Polar Regions
Antarctic fur seal pups (Arctocephalus gazella) playing in Fortuna Bay on South Georgia, Southern Ocean, Polar Regions
Antarctic fur seal pups (Arctocephalus gazella) playing in Fortuna Bay on South Georgia, Southern Ocean, Polar Regions
Antarctic fur seal pups (Arctocephalus gazella) playing in Fortuna Bay on South Georgia, Southern Ocean, Polar Regions
Antarctic fur seal pups (Arctocephalus gazella) playing in Fortuna Bay on South Georgia, Southern Ocean, Polar Regions
Antarctic fur seal pups (Arctocephalus gazella) playing in Fortuna Bay on South Georgia, Southern Ocean, Polar Regions
Antarctic fur seal pups (Arctocephalus gazella) playing in Fortuna Bay on South Georgia, Southern Ocean, Polar Regions
Leucistic caused by lack of melanin, or blond Antarctic fur seal pup (Arctocephalus gazella) on South Georgia, Polar Regions
Leucistic caused by lack of melanin, or blond Antarctic fur seal pup (Arctocephalus gazella) on South Georgia, Polar Regions
Antarctic fur seal pups (Arctocephalus gazella) playing in the surf at Salisbury Plain in the Bay of Isles on South Georgia, Polar Regions
Antarctic fur seal pup (Arctocephalus gazella) playing in Fortuna Bay on South Georgia, Southern Ocean, Polar Regions
Leucistic caused by lack of melanin, or blond Antarctic fur seal pup (Arctocephalus gazella) on South Georgia, Polar Regions
Leucistic caused by lack of melanin, or blond Antarctic fur seal pup (Arctocephalus gazella) on South Georgia, Polar Regions
Huge adult male leopard seal (Hydrurga leptonyx) hauled out on the beach at Salisbury Plain in the Bay of Isles, South Georgia, Polar Regions
A small group of introduced reindeer (Rangifer tarandus) before eradication in Stromness Bay, South Georgia, Polar Regions
Adult Commerson's dolphin (Cephalorhynchus commersonii), surfacing in Stanley Harbor in the Falkland Islands, South America
Guadalupe fur seals (Arctocephalus townsendi), at new haul out on Las Animas Island, Baja California Sur, Sea of Cortez, Mexico, North America
Adult Commerson's dolphins (Cephalorhynchus commersonii) surfacing, Carcass Island in the Falkland Islands, South America
Adult male Antarctic fur seals (Arctocephalus gazella) hauled out on ice near Brown Bluff, Antarctica, Polar Regions
Crabeater seals (Lobodon carcinophaga) hauled out on ice floe near Cuverville Island in the Antarctic Peninsula, Antarctica, Polar Regions
Crabeater seals (Lobodon carcinophaga) hauled out on ice floe in Neko Harbor near the Antarctic Peninsula, Antarctica, Polar Regions
Crabeater seals (Lobodon carcinophaga) hauled out on ice floe near the Antarctic Peninsula, Antarctica, Polar Regions
Adult Weddell seal (Leptonychotes weddellii) hauled out on ice near the Antarctic Peninsula, Southern Ocean, Polar Regions
Humpback whale (Megaptera novaeangliae) surfacing in the Weddell Sea near the Antarctic Peninsula, Antarctica, Polar Regions
California sea lions relaxing at Pier 39, San Francisco, San Francisco Peninsula, California, United States of America, North 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
Galapagos sea lion (Zalophus wollebaeki) pup in the Galapagos Island Archipelago, UNESCO World Heritage Site, Ecuador, South America
Galapagos sea lions (Zalophus wollebaeki) hauled out on the beach in the Galapagos Island Archipelago, UNESCO World Heritage Site, Ecuador, South America
Galapagos sea lion (Zalophus wollebaeki) pup in the Galapagos Island Archipelago, UNESCO World Heritage Site, Ecuador, South America
Galapagos sea lions (Zalophus wollebaeki) hauled out on the beach in the Galapagos Island Archipelago, UNESCO World Heritage Site, Ecuador, South America
Galapagos sea lion (Zalophus wollebaeki) pup and curious bird, Galapagos Island Archipelago, UNESCO World Heritage Site, Ecuador, South America
Galapagos sea lions (Zalophus wollebaeki) hauled out on the beach in the Galapagos Island Archipelago, UNESCO World Heritage Site, Ecuador, South America
Adult female leopard seal (Hydrurga leptonyx) hauled out on an ice floe in Kayak Cove on Brabant Island, Antarctica, Polar Regions
Crabeater seals (Lobodon carcinophaga) hauled out on ice floe near the Antarctic Peninsula, Antarctica, Polar Regions
Antarctic fur seal pup (Arctocephalus gazella) caught in fishing net on South Georgia, Southern Ocean, Polar Regions
Male southern elephant seal (Mirounga leonina) pups mock fighting on South Georgia Island, Southern Ocean
Male southern elephant seal (Mirounga leonina) pups mock fighting on South Georgia Island, Southern Ocean
Young adult bull southern elephant seal (Mirounga leonina) holding young pup's head underwater trying to kill it, South Georgia Island, Southern Ocean
Adult bull southern elephant seals (Mirounga leonina) fighting for breeding grounds on South Georgia Island, Southern Ocean
A small pod of killer whales (Orcinus orca) off the coast of South Georgia Island, Southern Ocean
Killer whale pod (Orcinus orca), off Punta Colorada, Isla San Jose, Baja California Sur, Mexico, North America
Killer whale pod (Orcinus orca), off Punta Colorada, Isla San Jose, Baja California Sur, Mexico, North America
A long-beaked common dolphin (Delphinus capensis), surfacing off Gorda Banks, Baja California Sur, Mexico, North America
California sea lions (Zalophus californianus), grouped together on a channel marker off Newport Beach, California, United States of America, North America
Skull of an adult killer whale (Orcinus orca), on display inside the town of Stanley, Falkland Islands, South Atlantic Ocean, South America
Adult beachmaster bull southern elephant seal (Mirounga leonina) challenging another male at Gold Harbour, South Georgia, Polar Regions
Hundreds of southern elephant seals (Mirounga leonina) hauled out onto the breeding beach at Gold Harbour, 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 elephant seal (Mirounga leonina) bull holding adult female in the surf to mate with her, South Georgia, Polar Regions
Southern elephant seal (Mirounga leonina) challenger bull among king penguin chicks at Gold Harbour on South Georgia, Polar Regions