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Christmas tree worms (Spirobranchus giganteus) on brain coral, Saint Croix, U.S. Virgin Islands.
A pair of Christmas tree worms in Cozumel, Mexico.
Multiple christmas tree worms, Curacao.
Pufferfish swimming by star coral, Nassau, The Bahamas.
Plate coral (Acropora hyacinthus) Beqa Lagoon, Fiji.
Hawksbill turtle glides over the pristine reefs in Fiji.
A school of orange basslets (Pseudanthias squamipinnis) on a healthy Fijian reef full of hard and soft corals, Fiji.
A school of orange basslets (Pseudanthias squamipinnis) on a healthy coral reef, Fiji.
A school of orange basslets (Pseudanthias squamipinnis) on a healthy coral reef, Fiji.
Christmas Tree Worm in hard coral, Bonaire, Caribbean Netherlands.
Sharknose Goby sits on some hard coral, Bonaire, Caribbean Netherlands.
Pair of orange and red christmas tree worms on top of yellow hard coral, Pulau Aur, Johor, Malaysia.
Divers hovering above a large pink barrel sponge, Indonesia.
Underwater photographer at the entrance of a cave framed by pink barrel sponges, North Sulawesi, Indonesia.
Green sea turtle (Chelonia mydas) resting on a plate coral, North Sulawesi, Indonesia.
Hard and soft corals, Red Sea, Egypt.
Soft and hard corals make a coral bommie surrounded by anthias and other small reef fish, Raja Ampat, Indonesia.
A myriad of hard and soft corals compete for space on the substrate of Darwin's Wall, Palau, Micronesia, Pacific
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 sea star 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 giant clam underwater on Sebayur Island, Komodo Island National Park, Indonesia, Southeast Asia, Asia
A profusion of hard and soft coral with a giant clam underwater on Tengah Besar Island, Komodo Island National Park, Indonesia, Southeast Asia, Asia
A profusion of hard and soft coral underwater on Siaba Kecil, Komodo Island National Park, Indonesia, Southeast Asia, Asia
Hard and soft corals and sea star underwater on Sebayur Island, Komodo Island National Park, Indonesia, Southeast Asia, Asia
Hard and soft corals and crinoid 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
A diver around a Stylophora species hard coral, on a tropical coral reef, in Gaafu Dhaalu atoll, The Maldives. Indian Ocean, Asia
A shoal of Yellowback Fusiliers (Caesio teres) swim around Acropora species hard corals, 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
A blue starfish (Linckia laevigata) clings to a coral reef in Komodo National Park, Indonesia.
Blue starfish (Linckia laevigata) cling to a coral bommie in Indonesia. This species of seastar is common throughout the Indo-Pacific.
Corals grow on a shallow reef in Indonesia. This beautiful, tropical region is known for its spectacular reefs and high marine biodiversity.
Sunlight sparkles through a table coral (Acropora sp.) in Komodo National Park, Indonesia. This tropical region in Indonesia is known for its spectacular coral reefs and high marine biodiversity.
Detail of the texture on a mushroom coral (Fungia sp.) growing in Wakatobi National Park, Indonesia. This remote region is known for its incredible marine biodiversity and gorgeous reefs.
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 beautiful coral reef thrives among the remote, tropical islands of Raja Ampat, Indonesia.
Detail of coral polyps growing on a healthy reef in Raja Ampat, Indonesia.
Healthy corals grow on the edge of a mangrove forest in a remote part of 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 beautiful coral reef thrives just off the island of Ambon, Indonesia.
An amazingly beautiful coral reef thrives among the scenic islands of Raja Ampat, Indonesia.
A beautiful coral reef thrives around an island in a remote part of Raja Ampat, Indonesia.
Humbug damselfish hover above protective corals in Raja Ampat, Indonesia.
A tiny hard coral crab can be found burrowing in between the polyps of the coral, Anilao, Philippines.
A myriad of hard and soft corals, as well as tropical reef fish at Vatu-I-Ra Conservation Park on Viti Levu, Fiji, South Pacific, Pacific
Fragile, foliose corals grow on a beautiful reef slope 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 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 diverse array of corals grow in Raja Ampat, Indonesia. This beautiful region is known for its spectacular reefs and high marine biodiversity.
Colorful gorgonians and reef-building corals grow in shallow water near the famous Blue Hole in Belize. This part of Central America is well known for its clear waters and beautiful coral reefs.
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.
Coral polyps (Galaxea sp.) wait for plankton on a reef in Komodo National Park, Indonesia. This beautiful area harbors extraordinary marine biodiversity and is a popular destination for divers and snorkelers.
Detail of a large coral polyp 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.
Fast-growing corals (Acropora sp.) are being grown by scientists in the Caribbean Sea. Once they reach a certain size they will be planted on a reef that has been previously damaged.
A colony of elkhorn coral (Acropora palmata) grows on a healthy reef in the Caribbean Sea.
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.
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 beautiful coral reef thrives among the remote, tropical islands of 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 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 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.
Sunlight shines on beautiful corals thriving among the scenic islands of Raja Ampat, Indonesia.
Healthy corals and other invertebrates thrive on a reef in Sulawesi, Indonesia.
A beautiful coral reef grows amid the tropical islands of Raja Ampat, Indonesia.
A beautiful coral reef thrives amid the tropical islands of Raja Ampat, Indonesia.
A blue sea star, Linkia laevigata, clings to a healthy coral reef in Raja Ampat, 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.
Detail of a reef-building coral colony growing on a healthy reef in Komodo National Park, Indonesia.
Bubble coral shrimp, Anilao, Philippines.
Huge table corals cover a reef in Indonesia that is teeming with fish, Raja Ampat, Indonesia.
A myriad of hard and soft corals, as well as tropical reef fish at Vatu-I-Ra Conservation Park on Viti Levu, Fiji, South Pacific, Pacific
A myriad of hard and soft corals compete for space on the substrate of the snorkel site known as the Milky Way, Palau, Micronesia, Pacific
A myriad of hard and soft corals compete for space on the substrate of the snorkel site known as the Milky Way, Palau, Micronesia, Pacific
A myriad of hard and soft corals at Vatu-I-Ra Conservation Park on Viti Levu, Fiji, South Pacific, Pacific
Reef fishes amongst profusion of hard plate at Pulau Setaih Island, Natuna Archipelago, Indonesia, Southeast Asia, Asia
A profusion of hard and soft coral underwater on Siaba Kecil, 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
A profusion of hard and soft coral underwater on Tengah Besar Island, Komodo Island National Park, Indonesia, Southeast Asia, Asia
Hard and soft corals and anenomes 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
Diver with Anthias fish swimming around hard coral, Laguna Reef, Straits of Tiran, Red Sea, Egypt, North Africa, Africa
Diver with Anthias fish swimming around hard coral, Gordon Reef, Straits of Tiran, Red Sea, Egypt, North Africa, Africa
Diver and hard and soft coral reef and lyre tail anthias (Pseudanthias squamipinnis), Marsa Alam, Egypt, Red Sea, North Africa, Africa
Diver and hard and soft coral reef and lyre tail anthias (Pseudanthias squamipinnis), Marsa Alam, Egypt, Red Sea, North Africa, Africa
Sunlit reef top with hard corals and anthias, Red Sea, Egypt, North Africa, Africa
Highly diverse coral head, including hard and soft corals, feather stars, and anthias, Kilima steps, Puerto Galera, Mindoro, Philippines, Southeast Asia, Asia
Hard coral (Montastrea sp.), Pohnpei, Federated States of Micronesia, Caroline Islands, Micronesia, Pacific Ocean, Pacific
Split image of woman at the pier observing hard coral formations and the Koolau mountains in the background, Kaneohe Bay, Oahu, Hawaii, United States of America, Pacific
A multitude of sponges, tunicates, feather stars, sea stars, soft and hard corals as well as fish co-exist harmoniously in the reefs at Cogon, Apo Island marine reserve, Philippines, Visayan sea, Southeast Asia, Asia
Split image of hard coral formations near the coast and the Koolau mountains in the background, Kaneohe Bay, Oahu, Hawaii, United States of America, Pacific
Split image of hard coral formations near the coast and the Koolau mountains in the background, Kaneohe Bay, Oahu, Hawaii, United States of America, Pacific