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A colorful warty frogfish, Antennarius maculatus, yawns as it waits for prey to swim close by in Komodo National Park, Indonesia.
A broadclub cuttlefish, Sepia latimanus, hovers over a healthy reef on the remote island of Teun in Indonesia's Banda Sea.
A beautiful coral reef thrives in shallow water in Indonesia's Ceram Sea.
A Nembrotha cristata nudibranch crawls over a tunicate.
A beautiful coral reef thrives in shallow water in Indonesia's Banda Sea. This part of eastern Indonesia is home to part of the world's greatest marine biodiversity.
A beautiful coral reef thrives in shallow water in Indonesia's Banda Sea.
A lionfish portrait, Anilao, Philippines.
Turtle gazes at its reflection under the USS Kittiwake shipwreck in Grand Cayman, Cayman Islands.
A crocodile approaches slowly over the sand, Caribbean Sea, Mexico.
Crocodile under water, Caribbean Sea, Mexico.
Head-on view of a giant jawfish in the Sea of Cortez.
A school of fish with a few stragglers catching up to the school, Raja Ampat, Indonesia.
A pod of spinner dolphins plays near the surface of Red Sea.
Several anemonefish wait outside while their anemone host closes up to feed, Raja Ampat, Indonesia.
Several pink anemones cluster on top of a coral outcropping providing homes for several anemone fish, Maldives.
A green sea turtle pauses from eating sea grass to gaze up at its surroundings, Red Sea.
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
Adult king penguins (Aptenodytes patagonicus) returning to sea from the nesting colony at Salisbury Plain, South Georgia, Polar Regions
Adelie penguin (Pygoscelis adeliae), leaping into the sea at Booth Island, Antarctica, Polar Regions
Views of the cemetery at the abandoned whaling station in Stromness Bay on South Georgia in the Southern Ocean, Polar Regions
Rackwick Bay, Hoy, Orkney Islands, Scotland, United Kingdom, Europe
Dunnet Head, near Thurso, Caithness, Scotland, United Kingdom, Europe
Panoramic view across turquoise sea to Arbatax and Capo Bellavista, Santa Maria Navarrese, Baunei, Nuoro, Sardinia, Italy, Mediterranean, Europe
The steep cliffs of Nazare, Oeste, Portugal, Europe
A commercial whale watching boat being launched at the beach at low tide in Puerto Pyramides, Golfo Nuevo, Argentina, South America
Southern right whale (Eubalaena australis) mother and calf near whale watching boat in Puerto Pyramides, 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 surfacing head on in Puerto Pyramides, Golfo Nuevo, Argentina, South America
Southern right whale (Eubalaena australis) adult female lifting both her head and flukes out of the water in Argentina, South America
A commercial whale watching boat being launched at the beach at low tide in Puerto Pyramides, Golfo Nuevo, Argentina, South America
Long line fishing boat in Cross Sound with the Fairweather Mountain Range as backdrop, Southeast Alaska, United States of America, North America
Views of the small harbor town of Friday Harbor on San Juan Island, Washington State, 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
Close-up of fish catch in the fishing town of Petersburg on Mitkof Island, Southeast Alaska, Pacific Ocean, United States of America, North America
View of olive trees and Golden Beach at Chrysi Ammoudia, Thassos, Aegean Sea, Greek Islands, Greece, Europe
Aerial of a cruise ship anchoring in Wulaia Bay, Tierra del Fuego, Chile, South America
View of snow-covered Half Moon Island in the South Shetland Group, 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
View of glacial ice on Alexander Island in Franz Josef Land, Russia, Arctic Ocean, Eurasia
Adult snow petrel (Pagodroma nivea nivea), in flight near the Antarctic Peninsula, Antarctica, Southern Ocean, Polar Regions
View from Fort Roral on Lokrum, Croatia, Europe
Hikers at Cala Fredosa creek, Cap Creus, Costa Brava, Catalonia, Spain, Europe
Footpath by the Sea on Badija, Korcula, Croatia, Europe
Reef shark (Carcharhinus perezii) with a school of silversides, herrings and anchovies, Cuba.
Emperor shrimp (Periclimenes imperator) on a sea cucumber, Anilao, Philippines.
Beautiful tiger anemone colony, Bohol Sea, Philippines.
Squirrelfish in St. Croix, U.S. Virgin Islands.
Rockmover wrasse in Raja Ampat, Indonesia.
Scorpionfish, Indonesia.
School of Jacks in motion, Belize.
School of Jacks, Indonesia.
Clownfish in green anemone, Indonesia.
Black Anemonefish, Fiji.
Arrow crab on a sea fan, Belize.
Pair of playful sea lions, Los Islotes, La Paz, Mexico.
Brunnich's guillemot (Uria lomvia) breeding and nesting site at Cape Fanshawe in the Svalbard Archipelago, Norway, Arctic, Europe
Ice in all of its myriad forms 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
Adult bull walrus (Odobenus rosmarus rosmarus) hauled out on the beach in the Svalbard Archipelago, Norway, Arctic, Europe
Great frigatebird (Fregata minor) feeding on erupting green sea turtle (Chelonia mydas) hatchlings in the Galapagos, UNESCO World Heritage Site, Ecuador, South America
The endemic Galapagos marine iguana (Amblyrhynchus cristatus) in the Galapagos Island Archipelago, UNESCO World Heritage Site, Ecuador, South America
Adult green sea turtle (Chelonia mydas agassizii) underwater in the Galapagos Island Archipelago, UNESCO World Heritage Site, Ecuador, South America
Great frigatebird (Fregata minor) feeding on erupting green sea turtle (Chelonia mydas) hatchlings in the Galapagos, UNESCO World Heritage Site, Ecuador, South America
Impressive panoramic view over the Rock of Gibraltar and the peninsula, looking over the white cliffs onto the Mediterranean Sea and mainland Spain, Gibraltar, Europe
Galapagos sea lion pup (Zalophus wollebaeki) underwater playing with a lobster molt in the Galapagos Islands, UNESCO World Heritage Site, Ecuador, South America
Young Galapagos sea lion (Zalophus wollebaeki) at play underwater in the Galapagos Island Archipelago, UNESCO World Heritage Site, Ecuador, South America
Galapagos sea lions (Zalophus wollebaeki) hauled out on Gardner Beach, Espanola Island in the Galapagos Islands, UNESCO World Heritage Site, Ecuador, South America
Adult red-footed booby (Sula sula) returning to the nest site with nest building material in the Galapagos Islands, UNESCO World Heritage Site, Ecuador, South America
Young Galapagos sea lions (Zalophus wollebaeki) at play underwater in the Galapagos Island Archipelago, UNESCO World Heritage Site, Ecuador, South America
Young Galapagos sea lion bulls (Zalophus wollebaeki) mock-fighting in the Galapagos Islands, UNESCO World Heritage Site, Ecuador, South America
Young Galapagos sea lions (Zalophus wollebaeki) at play underwater in the Galapagos Island Archipelago, UNESCO World Heritage Site, Ecuador, South America
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
The Lindblad Expedition ship National Geographic Explorer near a glacier 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
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
Guest from the Lindblad Expeditions ship National Geographic Sea Bird on path beside a skull in Southeast Alaska, United States of America, North America
The Lindblad Expedition ship National Geographic Explorer pushing through ice in the Svalbard Archipelago, Norway, Arctic, Europe
Guests from the Lindblad Expeditions ship National Geographic Sea Bird during Zodiac operations near LeConte Glacier in Southeast Alaska, United States of America, North America
Fish trawler between the icebergs of the Ilulissat Icefjord, UNESCO World Heritage Site, Western Greenland, Denmark, Polar Regions
Adult gentoo penguins (Pygoscelis papua), returning and coming from the sea at Booth Island, Antarctica, Southern Ocean, Polar Regions
Aerial of the mountainous coastline around Kulusuk, Greenland, Polar Regions
Rocky beach, Beechey island, Nunavut, Canadian Arctic, Canada, North America
Rocky beach, Beechey island, Nunavut, Canadian Arctic, Canada, North America
A statue of a whale mother and calf in the inner harbor in Loreto, Baja California Sur, Sea of Cortez, Mexico, North America
Whale bone on a beach, Baffin island, Nunavut, Canadian Arctic, Canada, North America
Green Sea Turtle (Chelonia mydas) nesting site at night on Long Beach on Ascension Island, Tropical Atlantic Ocean, South Atlantic Ocean
Green Sea Turtle (Chelonia mydas) nesting site at night on Long Beach on Ascension Island, Tropical Atlantic Ocean, South Atlantic Ocean
Huge waves breaking on the beach at Ascension Island in the Tropical Atlantic Ocean, South Atlantic Ocean
Huge waves breaking on the beach at 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 pups (Arctocephalus gazella) playing in Fortuna Bay on South Georgia, Southern Ocean, Polar Regions
King penguins (Aptenodytes patagonicus) on the beach at breeding and nesting colony at Salisbury Plain in the Bay of Isles, South Georgia, Southern Ocean, Polar Regions
Adult fin whale (Balaenoptera physalus) surfacing in the rich waters off the continental shelf near South Georgia in the Southern Ocean, Polar Regions
Adult Commerson's dolphin (Cephalorhynchus commersonii), surfacing in Stanley Harbor in the Falkland Islands, South America
Guadalupe fur seal (Arctocephalus townsendi), at new haul out on Las Animas Island, Baja California Sur, Sea of Cortez, Mexico, North America