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A bright yellow crinoid clings to a healthy coral reef near Alor, Indonesia.
A healthy coral reef thrives in Komodo National Park, Indonesia.
A beautiful coral reef thrives in shallow water in Indonesia's Banda Sea.
A black-banded sea krait, Laticauda semifasciata, swims over beautiful corals off the remote island of Manuk in the Banda Sea, Indonesia. This volcanic island is known as the island of the snakes.
A healthy coral reef thrives in Komodo National Park, Indonesia.
A humpback whale and her calf at the surface.
A young humpback whale plays on the surface.
A humpback whale breaches completely out of the water.
Two nudibranchs with two emperor shrimp riding on their backs, Tulamben, Bali, Indonesia.
A Caribbean reef shark and a school of fish, Grand Cayman, Cayman Islands.
Panamic cushion stars (Pentaceraster cumingi), gather on the sea floor, Sea of Cortez.
A cove contains thousands of glass fish and some black coral, Raja Ampat, Indonesia.
A whip coral goby broods eggs it has laid on the whip coral where it lives, Anilao, Philippines.
A coral bommie full of reef fish and healthy corals, Red Sea.
A large Napoleon wrasse swimming over a coral reef, Red Sea.
Southern rockhopper penguin breeding colony (Eudyptes chrysocome), on Saunders Island, Falkland Islands, South 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
Humpback whale (Megaptera novaeangliae) calf learning to slap the water surface.
Cerberilla nudibranch, Tulamben, Bali, Indonesia.
This sunflower star is the largest of species in the Pacific Northwest and is a voracious carnivore.
False clown anemonefish hide in their anemone in West Papua, Indonesia.
Rockmover wrasse in Raja Ampat, Indonesia.
School of Jacks in motion, Belize.
School of Jacks, Indonesia.
Goby on coral, Australia.
Black Anemonefish, Fiji.
Northern fur seals (Callorhinus ursinus), Bering Island, Commander Island Group, Kamchatka, Russia, Eurasia
Mute swan resting on Livadi beach, Serifos Island, Cyclades, Greek Islands, Greece, Europe
Adult brown pelicans (Pelecanus occidentalis), plunge diving for fish, Isla Carmen, Baja California Sur, Mexico, North America
Adult male Antarctic fur seal (Arctocephalus gazella) hauled out on ice near Brown Bluff, Antarctica, Polar Regions
Guadalupe fur seal (Arctocephalus townsendi), underwater on Las Animas Island, Baja California Sur, Sea of Cortez, Mexico, North America
A scorpion (Genus Paruroctonus), near Los Gatos, Baja California Sur, Sea of Cortez, Mexico, North America
King penguin (Aptenodytes patagonicus) breeding and nesting colony on South Georgia Island, Southern Ocean, Polar Regions
Northern giant petrels (Macronectes halli) fighting over the scavenging rights to a dead elephant seal pup at Royal Harbor, South Georgia
Purple stove-pipe sponge (Aplysina archeri), with boat in background, Curacao.
A green sea turtle (Chelonia mydas) in the sea grass, Saint Croix, U.S. Virgin Islands.
The face of a green sea turtle (Chelonia mydas), Saint Croix, U.S. Virgin Islands.
Christmas tree worms (Spirobranchus giganteus) on brain coral, Saint Croix, U.S. Virgin Islands.
Lined seahorse (Hippocampus erectus).
Great hammerhead shark turning, Tiger Beach, Bahamas.
Grean sea turtle with reflection in surface, Tiger Beach, Bahamas.
Great hammerhead shark and tiger shark, Tiger Beach, Bahamas.
Great hammerhead shark, Tiger Beach, Bahamas.
Great hammerhead shark with mouth open, Tiger Beach, Bahamas.
A starfish with spiny sea urchins at Quadra Island, British Columbia in Canada.
Great hammerhead shark with mouth open, Tiger Beach, Bahamas.
An oceanic whitetip shark (C. longimanus) and surface reflections at Cat Island in the Bahamas.
A boat captain watches an oceanic whitetip shark below at Cat Island in the Bahamas.
A giant oceanic manta ray (Mobula birostris) with attached remoras at San Benedicto island in Mexico.
A hawksbill sea turtle (Eretmochelys imbricata) feeds on sponge and an angelfish follows for scraps in Cozumel, Mexico.
A ribbon eel (Rhinomuraena quaesita) in Indonesia.
A reef manta ray (Mobula alfredi) feeding at night in Hawaii.
A scalloped hammerhead shark (Sphyrna lewini) at Socorros Island in Mexico.
Two squat anemone shrimp (Thor amboinensis) in Curacao.
A pair of Christmas tree worms in Cozumel, Mexico.
A colorful reef scene with sunburst at Cozumel, Mexico.
A pair of pink nudibranchs, Lembeh Strait, Indonesia.
A loggerhead sea turtle off the coast of North Carolina.
A hawksbill sea turtle resting under a reef in Cozumel, Mexico.
Diver swimming with oceanic whitetip sharks, Cat Island, Bahamas.
Oceanic whitetip shark with reflection, Cat Island, Bahamas.
A feeding hawksbill sea turtle in Cozumel, Mexico.
Diver swimming with an oceanic whitetip shark, Cat Island, Bahamas.
Close encounter with an oceanic whitetip shark, Cat Island, Bahamas.
Rays of light shining above an oceanic whitetip shark in Cat Island, Bahamas.
Diver and boat above black coral bushes in French Cay, Turks and Caicos.
Scuba diver swimming over a massive school of jack fish in Cabo Pulmo, Mexico
Multiple christmas tree worms, Curacao.
Close-up view of a goldentail moray, Curacao.
Octopus head, West Palm Beach, Florida.
Female Southern Atlantic Stingray, Grand Cayman.
Spiny lobster hiding in the reef, Nassau, The Bahamas.
Silver grunts swmming around Treasure Wreck, Nassau, The Bahamas.
Hawksbill sea turtle, Nassau, The Bahamas.
Sea fan on the colorful reefs of Komodo, Indonesia.
Colorful reef with fishes and sun burst in Komodo, Indonesia.
Group of barrel sponge in the deep reefs of the Banda Sea, Indonesia.
Snorkeler exploring starfish in lagoon in Tioman Island, Malaysia.
Krill in the Red Sea.
Pink anemonefish (Amphiprion perideraion) guard their anemone on a coral reef in the South Pacific ocean near Tavarua Island off the coast of Veti Levu, Fiji.
A Black Sea Turtle (Chelonia mydas agassizi) with a remora trying to attach, swims through a school of fish in the clear South Pacific ocean near Tavarua Island off the coast of Liti Levu, Fiji.
A Black Sea Turtle (Chelonia mydas agassizi) swims in the clear South Pacific ocean off the coast of Tavarua Island, Fiji in March 2012.
A Butterflyfish swims up along a coral reef in the warm and clear ocean waters of Papua New Guinea.
Gymnodoris ceylonica nudibranch, Beqa Lagoon, Fiji.
Tomato clownfish in its host anenome, Fiji.
Yellow Christmas tree worm (Spirobranchus giganteus), Beqa Lagoon, Fiji.
Blue Christmas tree worm (Spirobranchus giganteus) Beqa Lagoon, Fiji
Plate coral (Acropora hyacinthus) Beqa Lagoon, Fiji.
A large tiger cowrie (Cypraea tigrisis), Beqa Lagoon, Fiji.
Pink anemonefish in its host anenome, Fiji.
Pink anemonefish in its host anenome, Fiji.
Pink anemonefish in its host anenome, Fiji.
Pink anemonefish in its host anenome, Fiji.
Pink anemonefish in its host anenome, Fiji.
Pink anemonefish in its host anenome, Fiji.
Pink anemonefish in its host anenome, Fiji.
Pink anemonefish in its host anenome, Fiji.
A large bull shark (Carcharhinus leucas) at The Bistro dive site in Fiji.
Silvertip shark (Carcharhinus albimarginatus) at The Bistro Dive site in Fiji.
Scuba diver and silvertip shark (Carcharhinus albimarginatus) at The Bistro Dive site in Fiji.