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A female paper nautilus swims through the black water in search of a mate, Anilao, Philippines.
A tiny hard coral crab can be found burrowing in between the polyps of the coral, Anilao, Philippines.
A lionfish poses on a coral reef, Red Sea.
A coral bommie full of reef fish and healthy corals, Red Sea.
A large Napoleon wrasse swimming over a coral reef, Red Sea.
Adult Peale's Dolphin (Lagenorhynchus australis), bow-riding near New Island in the Falkland Islands, South America
Yellow crinoid (Crinoidea) and a scuba diver in Puerto Galera, Philippines. Photographed using close focus wide angle technique with a circular fisheye lens.
A pair of spinecheek anemonefish (Premnas biaculeatus), Sebayur Island, Komodo Island National Park, 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
A tiny cleaner shrimp removes parasites from a Black-finned snake eel (Ophichthus cephalozona) on a sandy seafloor in Indonesia. This tropical region, within the Coral Triangle, is home to an incredible variety of marine life.
Detail of anchor coral tentacles (Euphyllia sp.) growing on a reef in Indonesia. This area is known for its high marine biodiversity.
A beautiful coral reef grows near a set of limestone islands in Raja Ampat, Indonesia. This remote, equatorial region is known as the heart of the Coral Triangle. It is a popular destination for scuba divers and snorkelers.
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 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.
Blue starfish (Linckia laevigata) cling to a coral bommie in Indonesia. This species of seastar is common throughout the Indo-Pacific.
Delicate corals grow on a shallow reef near the island of Flores in Indonesia. This beautiful region is known for its spectacular reefs and high marine biodiversity.
A flathead fish camouflages itself in the sandy seafloor of Komodo National Park, Indonesia. This tropical region in Indonesia is known for its spectacular coral reefs and high marine biodiversity.
A live sundial shell (Architectonica perspectiva) crawls across the seafloor in Komodo National Park, Indonesia. This tropical region in Indonesia is known for its spectacular coral reefs and high marine biodiversity.
Detail of a stony coral (Galaxea sp.) growing in Wakatobi National Park, Indonesia. This remote region is known for its incredible marine biodiversity and gorgeous reefs.
An unusual sea star (Linckia laevigata) clings to a diverse reef near the island of Bangka, Indonesia. This beautiful, tropical region is home to an incredible variety of marine life.
A yellow stingray (Urobatis jamaicensis) lays on the sandy seafloor of Turneffe Atoll in Belize. This small and beautiful elasmobranch ranges throughout 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.
A beautiful and healthy coral reef grows in Komodo National Park, Indonesia.
A predatory lizardfish is finishing off a meal of a blenny in the Lesser Sunda Islands of Indonesia.
Colorful chocolate chip starfish (Protoreaster nodosus) cling to the seafloor of a seagrass meadow in Komodo National Park, Indonesia.
A white-spotted jellyfish (Phyllorhiza punctata) drifts in a strong current in the Lesser Sunda Islands of Indonesia.
A traditional fish trap, made out of bamboo, captures small reef fish near Alor in the Lesser Sunda Islands of Indonesia.
Colorful chocolate chip sea stars (Protoreaster nodosus) lay on the shallow sandy seafloor of Raja Ampat in eastern Indonesia.
A baby broadclub cuttlefish (Sepia latimanus) hovers in Lembeh Strait, Indonesia.
A traditional fish trap, made out of bamboo, captures small reef fish near Alor in the Lesser Sunda Islands of Indonesia.
A pair of harlequin shrimp (Hymenocera elegans) lie in a small recess on the seafloor of Lembeh Strait, Indonesia.
Detail of an encrusting sponge growing in Lembeh Strait, Indonesia.
Detail of an anchor coral (Euphyllia ancora) growing in Lembeh Strait, Indonesia.
A small, colorful goby sits on a coral colony amid the remote, tropical islands of Raja Ampat, Indonesia.
A well-camouflaged reef stonefish, Synanceia verrucosa, waits to ambush prey in Raja Ampat, Indonesia.
Mother and calf humpback whales, Megaptera novaeangliae, swim in the clear, blue waters of the Caribbean Sea.
An ornate ghost pipefish, Solenostomus paradoxus, hovers near a hydroid on a reef in Raja Ampat, Indonesia.
A false clownfish, Amphiprion ocellaris, swims among the tentacles of its host anemone in Raja Ampat, Indonesia.
A hawksbill sea turtle, Eretmochelys imbricata, swims over 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.
An unidentified scorpionfish waits to ambush prey on a black sand slope 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.
An amazingly beautiful coral reef thrives among the scenic islands of Raja Ampat, Indonesia.
A unidentified juvenile lionfish hovers above the seafloor in Lembeh Strait, Indonesia.
A beautiful coral reef thrives around an island in a remote part of Raja Ampat, Indonesia.
A school of blue-green damselfish, Chromis viridis, hovers amid the tropical islands of Raja Ampat, Indonesia.
Humbug damselfish hover above protective corals in Raja Ampat, Indonesia.
A beautiful coral reef thrives amid the tropical islands of Raja Ampat, Indonesia.
A colorful soft coral adorns a giant clam, Tridacna sp., growing on a healthy reef in Raja Ampat, Indonesia.
A soft coral and large gorgonian thrive on a beautiful coral reef in Raja Ampat, Indonesia.
A colorful warty frogfish, Antennarius maculatus, yawns as it waits for prey to swim close by in Komodo National Park, Indonesia.
A sinuous soft coral grows in the shallows amid the tropical islands of Raja Ampat, Indonesia.
A beautiful nudibranch, Doriprismatica atromarginata, feeds on a reef in Indonesia's Banda Sea.
A barred-fin moray eel, Gymnothorax zonipectus, is found on a coral reef in Komodo National Park, Indonesia.
Detail of a colonial tunicate growing 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 Nembrotha cristata nudibranch crawls over a tunicate.
Sea lions play among the baitfish under the California Oil Rigs, Southern California.
A young humpback whale plays on the surface.
Two nudibranchs with two emperor shrimp riding on their backs, Tulamben, Bali, Indonesia.
Two shrimp on a whip coral, Anilao, Philippines.
A giant jawfish brooding eggs in its mouth, Sea of Cortez, Mexico.
Simnia snail.
Panamic cushion stars (Pentaceraster cumingi), gather on the sea floor, Sea of Cortez.
This fish is having its gills cleaned by a cleaner wrasse so it opens wide allowing the fish to come in and feed on parasites, Raja Ampat, Indonesia.
A Doriprismatica nudibranch face on portrait, Anilao, Philippines.
A nudibranch shares a home in a bottle with a lemon goby, Anilao, Philippines.
A white paddleflap rhinopias showing off its handsome profile, Anilao, Philippines.
Blacktip reef sharks patrol the shallow waters around a small island in Tahiti, French Polynesia.
A honeycomb eel emerges from its den and appears to smile, Maldives.
A giant manta ray (Mobula birostris) soars by under the sun, Socorro Island, Mexico.
A coral bommie full of life, Maldives.
A leopard shark swims close to a coral reef, Maldives.
By-the-wind sailor (Velella velella), held in a hand without stinging just outside Newport Beach, California, United States of America, North America
Killer whale pod (Orcinus orca), ad tourist off Punta Colorada, Isla San Jose, Baja California Sur, Mexico, North America
Christmas tree worms (Spirobranchus giganteus), in the shallow reefs off Bangka Island, Indonesia, Southeast Asia, Asia
A slightly bleached staghorn coral colony grows in shallow water in the Solomon Islands. This Melanesian region is known for its spectacular marine biodiversity.
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.
Soft leather corals grow in the shallow waters in the Solomon Islands, Melanesia. This region, in the eastern part of the Coral Triangle, harbors spectacular marine biodiversity and is known for its beautiful reefs.
A pair of colorful tunicates grows on a reef in Lembeh Strait, Indonesia. This is a filter-feeding organism.
A Clark's anemonefish (Amphiprion clarkii) snuggles amongst its host's tentacles on a reef in Lembeh Strait, Indonesia.
A Caribbean electric ray (Narcine bancroftii) lays on the sandy seafloor of Turneffe Atoll off the coast of Belize in the Caribbean Sea. This ray can generate strong electric discharges used to defend themselves or to stun prey.
Fragile corals grow in extremely shallow water in Komodo National Park, Indonesia. This part of the Coral Triangle is known for its high marine biodiversity and is a popular destination for scuba divers and snorkelers.
A Clark's anemonefish (Amphiprion clarkii) snuggles amongst its host's tentacles on a reef in Lembeh Strait, Indonesia.
A pair of spotted eagle rays (Aetobatus narinari) swim 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.
Corals grow on a shallow reef in Indonesia. This beautiful, tropical region is known for its spectacular reefs and high marine biodiversity.
A snowflake moray eel (Echidna nebulosa) pokes its head out of a hole in Komodo National Park, Indonesia. This beautiful area harbors extraordinary marine biodiversity and is a popular destination for divers and snorkelers.
A venomous stonefish (Synanceia verrucosa) camouflages itself in sand in Komodo National Park, Indonesia. This tropical region in Indonesia is known for its spectacular coral reefs and high marine biodiversity.
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 massive school of bigeye trevally (Caranx sexfasciatus) swims in deep water near Cocos Island, Costa Rica. This remote island is home to an incredible variety of marine life.
A yellow stingray (Urobatis jamaicensis) lays on the sandy seafloor of Turneffe Atoll in Belize. This small and beautiful elasmobranch ranges throughout the Caribbean Sea.
A beautiful nudibranch (Hypselodoris tryoni) crawls along the seafloor near Alor in the Lesser Sunda Islands of Indonesia.
A school of juvenile striped eel catfish (Plotosus lineatus) swims over the seafloor in Komodo National Park, Indonesia.
A bigfin reef squid (Sepioteuthis lessoniana) hovers in nighttime waters off the coast of Komodo Island in Komodo National Park, Indonesia.
A pair of beautiful nudibranchs (Hypselodoris tryoni) crawl along the seafloor near Alor in the Lesser Sunda Islands of Indonesia.
Detail of a colorful giant clam (Tridacna maxima) growing on a reef near Alor in the Lesser Sunda Islands of Indonesia.
A beautiful set of corals grows in extremely shallow water in Komodo National Park, Indonesia.
Detail of a colonial tunicate growing on a reef in Raja Ampat, Indonesia. This remote, tropical region is home to extraordinary marine biodiversity.
A well-camouflaged devil scorpionfish (Scorpaenopsis diabolus) waits to ambush prey on a reef in Raja Ampat, Indonesia. This remote, tropical region is home to extraordinary marine biodiversity.
A tiny shrimp (Periclimenes soror) lives on a pin-cushion starfish in Raja Ampat, Indonesia. This remote, tropical region is home to extraordinary marine biodiversity.