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A shoal of tiny fish swimming over a coral reef in the Gaafu Dhaalu atoll, in the far south of the Maldives, Indian Ocean.
A mixture of Acropora species scleractinic hard corals, on a coral reef in Gaafu Dhaalu atoll, in the far south of the Maldives, Indian Ocean.
A huge Echinogorgia species sea fan, more than two metres across, on a coral reef in Gaafu Dhaalu atoll, in the far south of the Maldives, Indian Ocean.
Two-Spot Banded Snappers (Lutjanus biguttatus) on a coral reef in Gaafu Dhaalu atoll, in the far south of the Maldives, Indian Ocean.
A 'forest' of Staghorn (Acropora species) hard corals, on a coral reef in Gaafu Dhaalu atoll, in the far south of the Maldives, Indian Ocean.
A mixture of Acropora species scleractinic hard corals, growing on a coral reef in Gaafu Dhaalu atoll, in the far south of the Maldives, Indian Ocean.
A mix of hard corals, with a Pocillopora species coral in the centre, growing on a coral reef in Gaafu Dhaalu atoll, in the far south of the Maldives, Indian Ocean.
A shoal of small fish swimming over Acropora species hard corals, on a coral reef in Gaafu Dhaalu atoll, in the far south of the Maldives, Indian Ocean.
Goldentail moray eel (Gymnothorax miliaris), in coral reef, Curacao.
Chain moray eel (Echidna catenata), in coral reef, Curacao.
Reef shark, Tiger Beach, Bahamas.
A Caribbean reef squid on a deepwater night dive in West Palm Beach, Florida.
A hawksbill sea turtle (Eretmochelys imbricata) feeds on sponge and an angelfish follows for scraps in Cozumel, Mexico.
World champion free diver and his team in training shot from inside a sunken barge 90 feet below in Bimini, Bahamas.
Diver and boat above black coral bushes in French Cay, Turks and Caicos.
Spiny lobster hiding in the reef, Nassau, The Bahamas.
A diver approaches a beautiful gorgonian sea fan, Cayman Islands.
Hawksbill sea turtle and gray angelfish by coral reef, USS Kittiwake, Grand Cayman.
Group of barrel sponge in the deep reefs of the Banda Sea, Indonesia.
Barrel sponge in the reef with fishes in the Banda Sea, Indonesia.
A Butterflyfish swims up along a coral reef in the warm and clear ocean waters of Papua New Guinea.
A Spotted Trunkfish (Lactophrys bilcaudalis) swims over an algae covered coral reef in the Atlantic Ocean off the coast of Key Largo, Florida.
A French Angelfish (Pomacanthus paru) swims up close to a Blue Striped Grunt (Haemulon sciurus) under a coral reef ledge in the Atlantic Ocean off the coast of Key Largo, Florida.
A Rainbow Parrotfish (Scarus guacamaia) pokes it's head out from a hole in the coral reef in the Atlantic Ocean off the coast of Key Largo, Florida.
Plate coral (Acropora hyacinthus) Beqa Lagoon, Fiji.
A large red gorgonian sea fan and black crinoid, Beqa Lagoon, Fiji.
Red tree coral (Dendronephthya) on a Fijian reef.
Nudibranch feeding on algae, Papua New Guinea.
A live conch shellfish looks out of its shell, Papua New Guinea.
Beautiful nudibranch on coral, Papua New Guinea.
Nudibranch feeding on algae, Papua New Guinea.
Nudibranch feeding on algae, Papua New Guinea.
Nudibranch feeding on a sponge, Papua New Guinea.
Nudibranch feeding on algae, Papua New Guinea.
Nudibranch feeding on algae, Papua New Guinea.
Deep reef scene in Fiji with a beautiful gorgonian fan.
An underwater photographer swims past a large yellow gorgonian fan with a bed of red soft corals beneath it, Fiji.
Scuba diver swims by some large sponges off the coast of Bonaire, Caribbean Netherlands.
Scuba diver swims by some large sponges off the coast of Bonaire, Caribbean Netherlands.
Scuba diver propels above a large vase sponge, Bonaire, Caribbean Netherlands.
Scuba diver swimming underwater amongst sea sponges, Bonaire, Caribbean Netherlands.
Hawksbill sea turtle (Eretmochelys imbricata), a critically endangered species, feeding on soft coral, side view, South Ari Atoll, Maldives.
Diver looks on at sponges, coral and crinoids in a colorful Komodo seascape, taken at Cannibal Rock, Horseshoe Bay, Komodo National Park, Indonesia.
Blacktip reef shark, Yap, Micronesia.
Airplane wreck sitting atop reef, overgrown with soft coral and crinoids, Cenderawasih Bay, West Papua, Indonesia.
Top view of a pnk barrel sponge looking like a saucer against the cyan reef bottom, Cenderawasih Bay, West Papua, Indonesia.
Yellow trumpetfish, Easter Island, Chile.
Orange and white clownfish inside a red and green anemone, North Sulawesi, Indonesia.
Yellow and white damselfish, Bali, Indonesia.
Yellow and orange anemone mouth, Sabah, Malaysia.
Oriental sweetlip and yellow snapper at cleaning statiuon with a cleaner wrasse, Ari and Male Atoll, Maldives.
Giant moray eel and cleaner wrasse, Ari and Male Atoll, Maldives
Diver exploring the ARM General Felipe Xicotencatl (C53) shipwreck in Cozumel, Mexico.
Flying Gurnard on sand in Carribean Sea.
Divers visit the wreck of the Pelicano which sits on the bottom of the Caribbean Sea near Playa Del Carmen, Mexico.
An Invasive Indo-Pacific Lionfish off the coast of North Carolina in the Atlantic Ocean.
Glassfish swirling around a natural arch full of soft corals, Raja Ampat, Indonesia.
Soft and hard corals make a coral bommie surrounded by anthias and other small reef fish, Raja Ampat, Indonesia.
Coral Reefs Monument at the waterfront of San Miguel de Cozumel, Cozumel Island, Quintana Roo State, Mexico
Coral Reefs Monument at the waterfront of San Miguel de Cozumel, Cozumel Island, Quintana Roo State, Mexico
Palancar Gardens, El Cielito and Colombia Deep Reef Snorkelling Tour, Cozumel Island, Quintana Roo State, Mexico
Underwater photo taken during the Palancar Gardens, El Cielito and Colombia Deep Reef Snorkelling Tour, Cozumel Island, Quintana Roo State, Mexico
Underwater photo taken during the Palancar Gardens, El Cielito and Colombia Deep Reef Snorkelling Tour, Cozumel Island, Quintana Roo State, Mexico
Nurse shark (Ginglymostoma cirratum) seen during the Palancar Gardens, El Cielito and Colombia Deep Reef Snorkelling Tour, Cozumel Island, Quintana Roo State, Mexico
Underwater photo taken during the Palancar Gardens, El Cielito and Colombia Deep Reef Snorkelling Tour, Cozumel Island, Quintana Roo State, Mexico
Half above and half below view of coral reef at Pulau Setaih Island, Natuna Archipelago, Indonesia, Southeast Asia, Asia
Underwater reef on a remote small Islet in the Badas Island Group off Borneo, Indonesia, Southeast Asia, Asia
Sunrise over Le Morne and coral reef in the turquoise lagoon, aerial view by drone, Baie Du Cap, South Mauritius, Indian Ocean, Africa
Snorkeling woman holding starfish underwater, The Maldives, Indian Ocean
Underwater marine life on coral reefs, Thailand
Underwater marine life on coral reefs, Thailand
Underwater view of the reef along the circumference of the Great Blue Hole on Lighthouse Reef, UNESCO, Belize
Underwater view of the reef along the circumference of the Great Blue Hole on Lighthouse Reef, UNESCO, Belize
Underwater view of the reef along the circumference of the Great Blue Hole on Lighthouse Reef, UNESCO, Belize
Underwater view of the reef along the circumference of the Great Blue Hole on Lighthouse Reef, UNESCO, Belize
Underwater view of the reef along the circumference of the Great Blue Hole on Lighthouse Reef, UNESCO, Belize
Underwater view of the reef along the circumference of the Great Blue Hole on Lighthouse Reef, UNESCO, Belize
Nurse sharks (Ginglymostoma cirratum), being fed in shark and ray alley, Caye Caulker, Mesoamerican Barrier Reef, Belize
Nurse sharks (Ginglymostoma cirratum), being fed in shark and ray alley, Caye Caulker, Mesoamerican Barrier Reef, Belize
Southern stingray (Hypanus americanus) over sand in shark and ray alley, Caye Caulker, Mesoamerican Barrier Reef, Belize
West Indian manatee (Trichechus manatus), on the sand near Caye Caulker, inside the Mesoamerican Barrier Reef, Belize
West Indian manatee (Trichechus manatus), with snorkeler near Caye Caulker, inside the Mesoamerican Barrier Reef, Belize
Green sea turtle (Chelonia mydas), surfacing for air near Caye Caulker, inside the Mesoamerican Barrier Reef, Belize
Underwater view of of the reef system at Half Moon Caye, UNESCO, Mesoamerican Barrier Reef, Belize
Soft corals and sponges underwater on Long Caye in the Mesoamerican Barrier Reef, Belize
Brassy chubs (Kyphosus vaigiensis), being fed by boat operators inside the Mesoamerican Barrier Reef, Belize
Aerial view of atolls and coral reefs, Maldives, Indian Ocean, Asia
Steelyard balance containing Mediterranean reef fish including Salema porgy, goatfish, sea bream, tub gurnard, comber and red bandfish, Italy, Europe
Dramatic sky over coral reef and inland, aerial view by drone Grand Baie (Pereybere), north-west coast, Mauritius, Indian Ocean, Africa
Anemonefish in anemone on underwater reef on Jaco Island, Timor Sea, East Timor, Southeast Asia, Asia
Above and below view of coral reef and sandy beach on Jaco Island, Timor Sea, East Timor, Southeast Asia, Asia
Hard and soft corals on underwater reef on Jaco Island, Timor Sea, East Timor, Southeast Asia, Asia
Hard and soft corals and tridacna clam on underwater reef on Jaco Island, Timor Sea, East Timor, Southeast Asia, Asia
Hard and soft corals and reef fish underwater on Sebayur Island, Komodo Island National Park, Indonesia, Southeast Asia, Asia
Hard and soft corals and reef fish underwater on Sebayur Island, Komodo Island National Park, Indonesia, Southeast Asia, Asia
Hard and soft corals and reef fish underwater on Sebayur Island, Komodo Island National Park, Indonesia, Southeast Asia, Asia
Hard and soft corals and reef fish underwater on Sebayur Island, Komodo Island National Park, Indonesia, Southeast Asia, Asia
Map puffer (Arothron mappa) feeding on sponges on the house reef on Sebayur Island, Komodo Island National Park, Indonesia, Southeast Asia, Asia
Porcupinefish (Diodon hystrix) on house reef at Sebayur Island, Komodo Island National Park, Indonesia, Southeast Asia, Asia
A profusion of coral and reef fish on Batu Bolong, Komodo Island National Park, Indonesia, Southeast Asia, Asia