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Southern elephant seal (Mirounga leonina) adult female calling, Prion Island, South Georgia, UK Overseas Protectorate, Polar Regions
Adult humpback whales (Megaptera novaeangliae) feeding near Ilulissat, Greenland, Polar Regions
Lesser blackbacked gull (Larus fuscus). UK
Humpback whale (Megaptera novaeangliae) flukes-up dive in Dallmann Bay, Antarctica, Polar Regions
Gentoo penguin (Pygoscelis papua) breeding and nesting colony at Neko Harbour, Antarctica, Polar Regions
Grey seal (Halichoerus grypus) swimming. Scotland
Turnstones (Arenaria interpres). Northumberland, UK
Rockpool with barnacles, mussels, limpets and seaweed at Kilkee, County Clare, West Coast of Ireland
Bladderwrack bladder seaweed and limpets on the rocks in Kilkee, County Clare, West Coast of Ireland
Bladderwrack bladder seaweed and limpets on the rocks in Kilkee, County Clare, West Coast of Ireland
Amazing closeup of a lunging Minke whale (Balaenoptera acutorostrata) feeding on krill. Some of these small euphausiids are still hanging on to the expanded grooves. St. Lawrence estuary, Canada
She canÃt be more trusting than that. A curious Minke whale (Balaenoptera acutorostrata) has turned upside down exposing her white belly, navel and genital slits to the photographer. St. Lawrence estuary, Canada
Closeup of the expanded grooves of a giant Blue whale (Balaenoptera musculus) during a lateral lunge, a feeding strike occasionally seen in the St. Lawrence estuary, Canada.
Just before surfacing a beluga whale (Delphinapterus leucas) exhales while its blowhole is still submerged creating large air bubbles. St. Lawrence estuary, Canada
Juvenile Beluga whale (Delphinapterus leucas), an endangered and protected species, lifts its head to take a look at the research vessel. Beluga calves are dark in colour and turn white at seven to nine years of age. St. Lawrence estuary, Canada
Tiny water droplets catch the last light of the setting sun as this Finback whale (Balaenoptera physalus) exhales blasting the air compressed in its huge lungs high into the air. St. Lawrence estuary, Canada
Spoof warning sign - cod
Blue sea star (Linckia laevigata) shares the reef with sponges, feather stars and coral, Apo Island marine reserve, Philippines, Visayan sea, Southeast Asia, Asia
Morro do pico and reef, split level, Fernando de Noronha, Pernambuco, Brazil
Harbor Seal (Phoca vitulina) on ice near Dawes Glacier in Endicott Arm, Southeast Alaska, USA.
Newborn southern elephant seal (Mirounga leonina) on the beach at President Head on Snow Island in the South Shetland Island Group, Antarctica
A mother and newborn pup leopard seal (Hydrurga leptonyx) hauled out on ice floes on the western side of the Antarctic peninsula, Southern Ocean
A mother and newborn pup leopard seal (Hydrurga leptonyx) hauled out on ice floes on the western side of the Antarctic peninsula
California Sea Lion (Zalophus californianus) mother and pupat Los Islotes in the Gulf of California (Sea of Cortez), Mexico.
Mother and pup (nursing) southern elephant seal (Mirounga leonina) on the beach at President Head on Snow Island in the South Shetland Island Group, Antarctica
Adult male Steller Sea Lion (Eumetopias jubatus) hauled out on Race Rocks, British Columbia, Canada. Pacific Ocean.
Spawning pink salmon (Oncorhynchus gorbuscha) gathering to run upstream in Red Bluff Bay, Southeast Alaska, USA
Adult gentoo penguins (Pygoscelis papua) mating on Barrentos Island in the Aitchi Island Group, South Shetland Islands, Antarctica
Adult gentoo penguins (Pygoscelis papua) going and returning from sea to feed, Neko Harbour in Andvord Bay, Antarctica
Assorted Sperm Whale (Physeter macrocephalus) teeth from lower jaws of beached Sperm Whales in the mid-riff region of the Gulf of California (Sea of Cortez), Mexico.
California gray whale (Eschrichtius robustus) calf being touched by excited whale watchers in the calm waters of San Ignacio Lagoon, Baja California Sur, Mexico.
The Drake Passage from aboard the National Geographic Endeavour
Adult fin whale (Balaenoptera physalus) surfacing near Isla Carmen in the lower Gulf of California (Sea of Cortez), Mexico
Adult oceanic sunfish (Mola mola) underwater off the west side of Isabela Island in the deep waters surrounding the Galapagos Island Archipeligo, Ecuador. Pacific Ocean.
Curious Galapagos sea lions (Zalophus wollebaeki) underwater at the Guy Fawkes Islets near Santa Cruz Island in the Galapagos Island Archipeligo, Ecuador. Pacific Ocean
Adult Adelie penguin (Pygoscelis adeliae) on iceberg near the Antarctic Peninsula, Antarctica.
Gentoo penguins (Pygoscelis papua) in Antarctica
The Leopard seal (Hydrurga leptonyx) is the second largest species of seal in the Antarctic
South American Sea Lion (Otaria flavescens) hauled out on small rocky islet just outside Ushuaia, Beagle Channel, Argentina
Hawaiian Spinner Dolphin pod (Stenella longirostris) underwater in Honolua Bay off the northwest coast of Maui, Hawaii, USA, Pacific Ocean
California Gray Whale (Eschrichtius robustus) in San Ignacio Lagoon on the Pacific side of the Baja Peninsula, Baja California Sur, Mexico
Aerial view of feeding humpback Whales (Megaptera novaeangliae) surfacing off Whitestone Harbor in Southeast Alaska, USA. Pacific Ocean.
Adult Galapagos penguin (Spheniscus mendiculus) split view underwater in the Galapagos Island Group, Ecuador
Galapagos sea lion mother and nursing pup (Zalophus wollebaeki) hauled out on the beach in the Galapagos Island Group, Ecuador. Pacific Ocean.
Adult emperor penguin (Aptenodytes forsteri) on sea ice near Snow Hill Island in the Weddell Sea, Antarctica.
A small pod of 8 Type B killer whales (Orcinus nanus) in pack ice near Snow Hill Island Island, Weddell Sea, Antarctica, Southern Ocean
Green sea turtle (Chelonia mydas) at cleaning station at Olowalu Reef, Maui, Hawaii, USA
Adult humpback whale (Megaptera novaeangliae) breaching and head-lunging along the eastern shore of Chichagof Island in Southeastern Alaska, USA
Adult male green sea turtle (Chelonia mydas) in the protected marine sanctuary at Honolua Bay on the northwest side of the island of Maui, Hawaii, USA
Adult humpback whale (Megaptera novaeangliae) breaching and head-lunging along the eastern shore of Chichagof Island in Southeastern Alaska, USA
Long-beaked common dolphin pod (Delphinus capensis) encountered in the southern Gulf of California (Sea of Cortez), Baja California Sur, Mexico
Adult West Indian Manatee (Trichechus manatus) resting (note propeller scars on tail) in Homosassa Springs, Florida, USA.
Green sea turtle (Chelonia mydas) off Olowalu Reef on the west side of the island of Maui, Hawaii, USA.
Spotted eagle ray (Aetobatus narinari) underwater at Leon Dormido (Sleeping Lion) Island off San Cristobal Island in the Galapagos Island Archipelago, Ecuador
Nudibranch with commensal shrimp (Gymnodoris ceylonica). Indo Pacific
Stargazer buried in sandy bottom (Uranoscopus bicintus). Indo Pacific
Nudibranch in seagrass.
Spotted Dolphin pair (Stenella frontalis). Caribbean
Bottlenose dolphin trip (Tursiops truncates). Caribbean
Grouper (Mycteroperca bonaci). Caribbean
Blue whale, spouting. Close shot of spout (Balaenoptera physalus). USA, Channel Islands, CA
Soldierfish (Myripristris jacobus). Cocos Island, Costa Rica
Snake eel, head out of sand (Pisonophis cancivorus). Indo Pacific
Octopus (Octopus sp).
White shark looks above water (Carcharodon carcharius). South Africa
Adult Peale's Dolphin (Lagenorhynchus australis) bow-riding in the Falkland Islands, South Atlantic Ocean
Adult humpback Whale (Megaptera novaeangliae) breaching near the Five Fingers Island Group in Southeast Alaska, USA. Pacific Ocean.
Beached California Gray Whale (Eschrichtius robustus) calf with Turkey Buzzards feeding on carcass on Isla Tiburon in the Gulf of California (Sea of Cortez), Mexico.
Adult Galapagos penguin (Spheniscus mendiculus) foraging underwater on small baitfish in the Galapagos Island Group, Ecuador
Adult male walrus (Odobenus rosmarus rosmarus) on ice floes near Moffen Island, Barents Sea, Norway
Whale watchers on the Lindblad ship National Geographic Sea Bird with adult blue whales (Balaenoptera musculus), Gulf of California (Sea of Cortez), Mexico
An adult kelp gull (Larus dominicanus) in flight near the Antarctic peninsula in the southern ocean. This is the only gull regularly found in the Antarctic peninsula to a latitude of 68 degrees south.
California Gray Whale (Eschrichtius robustus) in San Ignacio Lagoon on the Pacific side of the Baja Peninsula, Baja California Sur, Mexico
Adult male walrus (Odobenus rosmarus rosmarus) on multi-year ice floes off Bolshoy Island, Barents Sea, Norway
Adult Antarctic Fur Seal (Arctocephalus gazella) killing and then eating a king penguin on the island of South Georgia, southern Atlantic Ocean
Giant manta ray, ventral view (Manta birostris). Mexico, Revillagigedo Is.
Underwater scenes from the Galapagos Island Archipelago, Ecuador
Nudibranch (Chromodoris kuniei). Indo Pacific
Adult green sea turtle (Chelonia mydas) in the protected marine sanctuary at Honolua Bay on the northwest side of the island of Maui, Hawaii, USA
Blue sea star (Linckia laevigata). Indo Pacific
Harbor seal in giant kelp forest (Phoca vitulina)). USA, Channel Islands, CA
Adult California Gray Whale (Eschrichtius robustus) carcass on Isla Tiburon, Sonora, Mexico.
Curious northern (Steller) sea lion (Eumetopias jubatus) colony in Inian Pass near Cross Sound, southeastern Alaska
Curious harbor seal (Phoca vitulina) approaches the Zodiac at Vigur Island in Iceland
Adult male walrus (Odobenus rosmarus rosmarus) on multi-year ice floes off Bolshoy Island, Barents Sea, Norway
Adult fin whale (Balaenoptera physalus) surfacing near Isla Carmen in the lower Gulf of California (Sea of Cortez), Mexico
Humpback whale (Megaptera novaeangliae) surfacing near Zodiac near the Antarctic Peninsula, Antarctica, Southern Ocean
Curious northern (Steller) sea lion (Eumetopias jubatus) colony in Inian Pass near Cross Sound, southeastern Alaska
Views of the scenic Lemaire Channel on the west side of the Antarctic peninsula in Antarctica. Shown here is the National Geographic Endeavour navigating the channel through ice floes in late spring.
Peacock Flounder, swimming (Bothus mancus). Indo Pacific
California gray whale (Eschrichtius robustus) calf being touched by excited whale watchers in the calm waters of San Ignacio Lagoon, Baja California Sur, Mexico.
Adult Galapagos penguin (Spheniscus mendiculus) hunting fish underwater in the Galapagos Island Group, Ecuador
Humpback whale (Megaptera novaeangliae) flukes-up dive near the Antarctic Peninsula, Antarctica, Southern Ocean
Galapagos penguin (Spheniscus mendiculus) feeding underwater on small baitfish in the Galapagos Island Archipelago, Ecuador
Galapagos sea lions (Zalophus wollebaeki) with photographer Jennifer Davidson basking in the sun in Gardner Bay on Espanola Island in the Galapagos Island roup, Ecuador
Adult arctic tern (Sterna paradisaea) feeding on small fish and krill in Esbukta on Spitsbergen Island in the Svalbard Archipelago, Norway
Hawaiian Spinner Dolphin (Stenella longirostris) spinning, possibly to dislodge attached remoras, Lanai, Hawaii, USA, Pacific Ocean
Young Galapagos sea lion (Zalophus wollebaeki) catching and eventually eating a Sally Lightfoot crab (Grapsus grapsus) in the Galapagos Island Group, Ecuador. Pacific Ocean.
Curious northern (Steller) sea lion (Eumetopias jubatus) colony in Inian Pass near Cross Sound, southeastern Alaska
The Leopard seal (Hydrurga leptonyx) is the second largest species of seal in the Antarctic