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Adult spinecheek anemonefish (Premnas biaculeatus), Sebayur Island, Komodo National Park, Flores Sea, Indonesia, Southeast Asia, Asia
A profusion of baitfish underwater on Sebayur Island, Komodo National Park, Flores Sea, Indonesia, Southeast Asia, Asia
A school of bigeye trevally (Caranx sexfasciatus) on Sebayur Island, Flores Sea, Indonesia, Southeast Asia, Asia
Woman holding two red starfish snorkeling in the turquoise sea in summer, Zanzibar, Tanzania, East Africa, Africa
Man and woman with scuba masks showing starfish swimming underwater in the exotic lagoon, Zanzibar, Tanzania, East Africa, Africa
Mother and son with scuba masks showing red starfish underwater, Zanzibar, Tanzania, East Africa, Africa
Exotic starfish under the breaking waves in the transparent water of the Indian Ocean, Zanzibar, Tanzania, East Africa, Africa
Adult bull Galapagos fur seal (Arctocephalus galapagoensis) underwater on Genovesa Island, Galapagos, Ecuador, South America
Pacific green sea turtle (Chelonia mydas) underwater on Fernandina Island, Galapagos, Ecuador, South America
Galapagos penguin (Spheniscus mendiculus) swimming underwater at Bartolome Island, Galapagos, Ecuador, South America
Galapagos penguins (Spheniscus mendiculus) swimming underwater at Bartolome Island, Galapagos, Ecuador, South America
Bull Galapagos sea lion (Zalophus wollebaeki) with snorkeler underwater at Santiago Island, Galapagos, Ecuador, South America
Galapagos sea lion (Zalophus wollebaeki) underwater at Santiago Island, Galapagos, Ecuador, South America
Galapagos penguin (Spheniscus mendiculus) swimming underwater at Bartolome Island, Galapagos, Ecuador, South America
The endemic Galapagos marine iguana (Amblyrhynchus cristatus), feeding underwater, Fernandina Island, Galapagos, UNESCO World Heritage Site, Ecuador, South America
The endemic Galapagos marine iguana (Amblyrhynchus cristatus) feeding underwater, Fernandina Island, Galapagos, UNESCO World Heritage Site, Ecuador, South America
California gray whale calf (Eschrichtius robustus) underwater in San Ignacio Lagoon, Baja California Sur, Mexico, North America
Pacific green sea turtle (Chelonia mydas agassizi), Post Office Bay, Floreana Island, Galapagos Islands, Ecuador, South America
Humpback whale (Megaptera novaeangliae), adult underwater on the Silver Bank, Dominican Republic, Greater Antilles, Caribbean, Central America
Humpback whale (Megaptera novaeangliae), mother and calf underwater on the Silver Bank, Dominican Republic, Greater Antilles, Caribbean, Central America
Female in bikini swimming underwater, Seychelles, Indian Ocean, Africa
Short-finned pilot whale (Globicephala macrorhynchus), underwater off Isla San Marcos, Baja California Sur, Mexico, North America
Juvenile whale shark (Rhincodon typus), underwater near Los Islotes, Baja California Sur, Mexico, North America
A woman harvesting seaweed at one of the underwater farms, Paje, Zanzibar, Tanzania, East Africa, Africa
California gray whale (Eschrichtius robustus), with whale watchers, San Ignacio Lagoon, Baja California Sur, Mexico, North America
A Crown of Thorns starfish (Acanthaster planci), on a tropical coral reef, in Gaafu Dhaalu atoll, The Maldives, Indian Ocean, Asia
A diver around a Stylophora species hard coral, on a tropical coral reef, in Gaafu Dhaalu atoll, The Maldives. Indian Ocean, Asia
A gorgonian sea fan (possibly Echinogorgia species) octocoral on a tropical coral reef, in Gaafu Dhaalu atoll, The Maldives, Indian Ocean, Asia
A mix of Acropora species hard corals, on a tropical coral reef, around Gaafu Dhaalu atoll, in the south of The Maldives, Indian Ocean, Asia
Small reef fish crowd around outcrops of Pocillopora species hard corals, a coral reef in Gaafu Dhaalu atoll, The Maldives, Indian Ocean, Asia
A mix of Acropora species hard corals, on a tropical coral reef, around Gaafu Dhaalu atoll, in the south of The Maldives, Indian Ocean, Asia
Young whale shark (Rhincodon typus), filter feeding near the surface at El Mogote, Baja California Sur, Mexico, North America
Young whale shark (Rhincodon typus), filter feeding near snorkeler at El Mogote, Baja California Sur, Mexico, North America
Underwater view of dense brash ice at Cuverville Island, Ererra Channel, Antarctica, Polar Regions
Gentoo penguins (Pygoscelis papua), swimming underwater at Port Lockroy, Antarctica, Polar Regions
Humpback whale (Megaptera novaeangliae), mother and calf underwater on the Silver Bank, Dominican Republic, Greater Antilles, Caribbean, Central America
Adult male Galapagos marine iguana (Amblyrhynchus cristatus), underwater, Fernandina Island, Galapagos, Ecuador, South America
A pair of humpback whales (Megaptera novaeangliae), underwater on the Silver Bank, Dominican Republic, Greater Antilles, Caribbean, Central America
Adult olive-headed sea snake (Hydrophis major), swimming on Ningaloo Reef, Western Australia, Australia, Pacific
Whale shark (Rhincodon typus), underwater with snorkeler on Ningaloo Reef, Western Australia, Australia, Pacific
Whale shark (Rhincodon typus), underwater with snorkeler on Ningaloo Reef, Western Australia, Australia, Pacific
Whale shark (Rhincodon typus), underwater with snorkelers on Ningaloo Reef, Western Australia, Australia, Pacific
Whale shark (Rhincodon typus), underwater with snorkeler on Ningaloo Reef, Western Australia, Australia, Pacific
Adult reef manta ray (Mobula alfredi), underwater in Ningaloo Reef, Western Australia, Australia, Pacific
Adult reef manta ray (Mobula alfredi), underwater in Coral Bay, Western Australia, Australia, Pacific
Bangka (boat) over coral, Chindonan Island, Calamian Islands, Coron, Palawan, Philippines, Southeast Asia, Asia
Anker's whip coral shrimp, Cebu, Philippines.
Lizardfish eating a dragonet, Anilao, Philippines.
Adult bigeye snapper (Lutjanus lutjanus) schooling off Port Airboret, Raja Ampat, Indonesia, Southeast Asia, Asia
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
Blacktip reef sharks swim just under the surface in the Solomon Islands. This beautiful Melanesian region is known for its spectacular reefs and high marine biodiversity.
A thorny seahorse (Hippocampus histrix) uses effective camouflage to blend into its surroundings on the seafloor of Lembeh Strait, Indonesia.
A blue starfish (Linckia laevigata) clings to a coral reef in Komodo National Park, Indonesia.
A Japanese Jake seaplane, shot down during World War II, lies on the seafloor of Palau's lagoon. Many planes and dozens of large ships were sunk around Palau during the war.
A West Indian starfish (Oreaster reticulatus) crawls slowly across a sand and seagrass seafloor in Turneffe Atoll, Belize. This part of Central America is well known for its clear waters and beautiful coral reefs.
A spotted eagle ray (Aetobatus narinari) swims over the deep, sandy seafloor near Cocos Island, Costa Rica. This remote, Pacific island is famous for its healthy fish and shark populations.
A crown-of-thorns starfish (Acanthaster planci) feeds on coral near Cocos Island, Costa Rica.
A Black-finned snake eel (Ophichthus cephalozona) pokes its head out of a sandy seafloor in Indonesia. This tropical region, within the Coral Triangle, is home to an incredible variety of marine life.
A colony of elkhorn coral (Acropora palmata) grows on a healthy reef in the Caribbean Sea.
A Caribbean reef octopus (Octopus briareus) explores the seafloor of a shallow reef off the coast of Belize. This intelligent cephalpod ranges throughout the Caribbean feeding on lobster, crab, and small fish.
Detail of the colorful dorsal fin of a scorpionfish (Scorpaenopsis sp.) in Wakatobi National Park, Indonesia. This remote region is known for its incredible marine biodiversity and gorgeous reefs.
A beautiful nudibranch (Hypselodoris tryoni) crawls along the seafloor near Alor in the Lesser Sunda Islands of Indonesia.
A broadclub cuttlefish (Sepia latimanus) hovers above a beautiful coral reef in Komodo National Park, Indonesia.
Detail of a coral colony in Raja Ampat, Indonesia. This remote, tropical region is home to extraordinary marine biodiversity.
A Papuan scorpionfish (Scorpaenopsis papuensis) lies on a reef in Raja Ampat, Indonesia. This remote, tropical region is home to extraordinary marine biodiversity.
Detail of a mushroom coral (Fungia sp.) on a reef in Raja Ampat, Indonesia. This remote, tropical region is home to extraordinary marine biodiversity.
Colorful reef fish, mainly Scalefin anthias (Pseudanthias squamipinnis), swim above a beautiful set of corals growing near Alor in the Lesser Sunda Islands of Indonesia.
Detail of a feather duster worm growing on a coral reef near Alor in the Lesser Sunda Islands of Indonesia.
Beautiful soft corals (Dendronephthya sp.) grow on the edge of a channel in Raja Ampat, Indonesia.
A messmate pipefish, Corythoichthys intestinalis, swims over the seafloor in Alor, Indonesia.
Abstract of the mouth of a Trachyphyllia coral growing in Lembeh Strait, Indonesia.
Colorful anthias fish swim above a beautiful reef growing near an island in the Banda Sea, Indonesia. This remote and historic region, known previously for the Spice Islands, harbors extraordinary marine biodiversity.
Detail of the colorful tentacles on a bulbed anemone, Entacmaea quadricolor, growing on a reef near Alor in Indonesia.
A beautiful coral reef, dominated by colorful gorgonians, grows along the edge of the Blue Hole in Lighthouse Reef in the Caribbean Sea. This reef is part of the massive Mesoamerican Reef System, the second largest barrier reef on Earth.
A colorful queen conch, Strombus gigas, lies on the seagrass-covered seafloor of Turneffe Atoll in Belize. Conchs are an important marine resource as they are sought for food.
Fast-growing staghorn coral fragments, Acropora sp., are being grown in hopes of replanting colonies in reef areas of the Caribbean Sea that have been damaged.
A colorful West Indian starfish, Oreaster reticulatus, crawls over a shallow, sandy seafloor in Turneffe Atoll in the Caribbean Sea. This reef is part of the massive Mesoamerican Reef System, the second largest barrier reef on Earth.
Soft coral colonies, Sinularia sp., thrive on a reef found among the remote, tropical islands of Raja Ampat, Indonesia.
A pair of Chromodoris annae nudibranch crawl on a large tunicate among the remote, tropical islands of Raja Ampat, Indonesia.
A vibrant nudibranch, Chromodoris sp., crawls across a coral reef in the remote, tropical islands of Raja Ampat, Indonesia.
A vibrant soft coral, Dendronephthya sp., grows amid the remote, tropical islands of Raja Ampat, Indonesia.
A well-camouflaged reef stonefish, Synanceia verrucosa, waits to ambush prey in Raja Ampat, Indonesia.
Detail of coral polyps growing on a healthy reef in Raja Ampat, Indonesia.
A beautiful coral reef thrives 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, lays on 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 well-camouflaged ornate ghost pipefish, Solenostomus paradoxus, hovers over a reef in Komodo National Park, Indonesia.
A blue starfish, Linkia laevigata, clings to coralline algae on a reef in Sulawesi, Indonesia.
A beautiful coral reef thrives around an island in a remote part of Raja Ampat, Indonesia.
A bigfin reef squid, Sepioteuthis lessoniana, hovers midwater in Lembeh Strait, Indonesia.
A well-camouflaged Mototi octopus, Octopus sp., hides in plain view on the sandy seafloor in Lembeh Strait, Indonesia.
A beautiful coral reef thrives amid the tropical islands of Raja Ampat, Indonesia.
Humbug damselfish hover above protective corals in Raja Ampat, Indonesia.
A vibrant and diverse coral reef grows amid the tropical islands of Raja Ampat, Indonesia.
A beautiful nudibranch, Doriprismatica atromarginata, feeds on a reef in Indonesia's Banda Sea.
Detail of a bulbed anemone, Entacmaea quadricolor, on a coral reef in Komodo National Park, Indonesia.
A barred-fin moray eel, Gymnothorax zonipectus, is found on a coral reef in Komodo National Park, Indonesia.
Detail of a reef-building coral colony, Favia sp., growing on a healthy reef in Komodo National Park, Indonesia.
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 humpback whale and her calf at the surface.