1387-840 - Sea fan on soft coral in Raja Ampat, Indonesia.

1387-839 - Yellow sea fan in Raja Ampat, Indonesia.

1387-827 - Arrow crab on a sea fan, Belize.

1387-737 - Denise's pygmy seahorse (Hippocampus denise), Kimbe Bay, Papua New Guinea.

860-292577 - Wreck of the Boga, patrol vessel used by the Indonesian government voluntarily sunk in September 2012, to provide additional wreckage for diving in the area to become an artificial reef and allow diving to develop in Kubu. The wreck now lies between 13 and 31m, with the bow just a few fin strokes from the shore. The current can be strong at this site. Tulamben, Bali, Indonesia.

1387-626 - A pregnant pygmy seahorse clings to a frond of a gorgonian fan, Anilao, Philippines.

1387-595 - A giant oceanic manta ray hovers over a cleaning station near a sea fan, Raja Ampat, Indonesia.

1387-550 - A vibrant and diverse coral reef grows amid the tropical islands of Raja Ampat, Indonesia.

1387-544 - Beautiful mushroom coral and reef fish thrive amid the tropical islands of Raja Ampat, Indonesia.

1387-543 - Beautiful corals and reef fish thrive amid the tropical islands of Raja Ampat, Indonesia.

1387-538 - A beautiful coral reef thrives amid the tropical islands of Raja Ampat, Indonesia.

1387-535 - A beautiful coral reef grows amid the tropical islands of Raja Ampat, Indonesia.

1387-532 - A brightly colored soft coral adorns prop roots in a blue water mangrove forest in Raja Ampat, Indonesia.

1387-531 - A beautiful coral reef thrives around an island in a remote part of Raja Ampat, Indonesia.

1387-527 - A soft coral and large gorgonian thrive on a beautiful coral reef in Raja Ampat, Indonesia.

1387-528 - A brightly colored soft coral adorns a beautiful coral reef in Raja Ampat, Indonesia.

1387-525 - A beautiful, vibrant coral reef grows amid the tropical islands of Raja Ampat, Indonesia.

1387-524 - A colorful soft coral adorns a giant clam, Tridacna sp., growing on a healthy reef in Raja Ampat, Indonesia.

1387-521 - A massive giant clam, Tridacna gigas, grows on a shallow coral reef in Raja Ampat, Indonesia.

1387-518 - Vibrant soft corals, Dendronephthya sp., thrive among the islands of Raja Ampat, Indonesia.

1387-501 - An amazingly beautiful coral reef thrives among the scenic islands of Raja Ampat, Indonesia.

1387-500 - Healthy corals grow on a vibrant reef in Raja Ampat, Indonesia.

1387-466 - Healthy corals grow on the edge of a mangrove forest in a remote part of Raja Ampat, Indonesia.

1387-464 - Bright beams of sunlight descend into the shadows of a blue water mangrove forest in Raja Ampat, Indonesia.

1387-459 - A beautiful coral reef thrives in a remote part of Raja Ampat, Indonesia.

1387-456 - Detail of coral polyps, Tubastrea sp., growing on a healthy reef in Raja Ampat, Indonesia.

1387-434 - A beautiful soft coral colony, Dendronephthya sp., grows amid the remote, tropical islands of Raja Ampat, Indonesia.

1387-433 - A vibrant soft coral, Dendronephthya sp., grows amid the remote, tropical islands of Raja Ampat, Indonesia.

1387-429 - A beautiful coral reef, dominated by colorful gorgonians, grows along the edge of Turneffe Atoll in the Caribbean Sea. This reef is part of the massive Mesoamerican Reef System, the second largest barrier reef on Earth.

1387-428 - 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.

1387-426 - 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.

1387-425 - 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.

1387-311 - A colorful and healthy coral reef thrives in shallow water in Raja Ampat, Indonesia. This remote region is known as the heart of the Coral Triangle due to its extraordinary marine biodiversity.

1387-275 - A colorful set of gorgonians, reef-building corals, and other invertebrates grow on a diverse reef in the Caribbean Sea.

1387-274 - A colorful set of gorgonians, reef-building corals, and other invertebrates grow on a diverse reef in the Caribbean Sea.

1387-270 - A colorful set of gorgonians, reef-building corals, and other invertebrates grow on a diverse reef in the Caribbean Sea.

1387-269 - 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.

1387-219 - Vibrant soft coral colonies grow on a reef dropoff in Lembeh Strait, Indonesia. This area is known for its spectacular marine biodiversity.

1387-216 - 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.

1387-214 - 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.

1387-213 - A West Indian starfish (Oreaster reticulatus) crawls slowly across a sandy seafloor in Turneffe Atoll, Belize. This part of Central America is well known for its clear waters and beautiful coral reefs.

1387-212 - 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.

1387-211 - 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.

1387-174 - Close-up view of a Hawksbill sea turtle next to a red sea fan on a reef in Raja Ampat, West Papua, Indonesia, Southeast Asia, Asia

1387-172 - Colorful soft corals (Dendronephthya sp.) adorn the stunning reefs of southern Raja Ampat, West Papua, Indonesia, Southeast Asia, Asia

1387-152 - A colony of red whip fan corals with crinoids, Papua New Guinea, Pacific

1387-120 - Alcyonaria coral with schooling anthias dominate this Fijian reef scene, Fiji, South Pacific, Pacific

1387-52 - Gorgonian coral in the background with Arnaz's damselfish (Chrysiptera arnazae), Philippines, Southeast Asia, Asia

860-292123 - Yellow gorgonians on an overhang along a reef cliff, Tahiti, French Polynesia

832-401957 - Giant sea fan (Annella mollis) on steep wall, St Johns Reef dive site, Saint Johns, Red Sea, Egypt, Africa

759-13544 - Seafan in Coral Reef, Cabo Pulmo, Baja California Sur, Mexico

759-13528 - Pacific Seahorse, Hippocampus ingens, La Paz, Baja California Sur, Mexico

759-13527 - Pacific Seahorse, Hippocampus ingens, La Paz, Baja California Sur, Mexico

759-13526 - Pacific Seahorse, Hippocampus ingens, La Paz, Baja California Sur, Mexico

759-13482 - Scissortail Chromis over Coral Reef, Chromis atrilobata, La Paz, Baja California Sur, Mexico

759-13481 - Scissortail Chromis over Coral Reef, Chromis atrilobata, La Paz, Baja California Sur, Mexico

759-13480 - Scissortail Chromis over Coral Reef, Chromis atrilobata, La Paz, Baja California Sur, Mexico

759-13479 - Shoal of Cortez Rainbow Wrasse, Thalassoma lucasanum, La Paz, Baja California Sur, Mexico

759-13478 - Shoal of Yellowtail Surgeonfish, Prionurus punctatus, La Paz, Baja California Sur, Mexico

759-13352 - Shoal of Pyramid Butterflyfish, Hemitaurichthys polyepis, Christmas Island, Australia

759-13346 - Scuba Diver at Coral Reef, Melithaea sp., Christmas Island, Australia

759-13077 - Scuba Diver exploring Overhang, Felidhu Atoll, Maldives

759-12813 - Red Spot Cardinalfish surrounding Coral Reef, Apogon parvulus, Raja Ampat, West Papua, Indonesia

759-12763 - Corals growing near Mangroves, Raja Ampat, West Papua, Indonesia

759-12730 - Pygmy Sweepers surrounding Coral Reef, Parapriacanthus ransonneti, Raja Ampat, West Papua, Indonesia

759-12723 - Pygmy Sweepers surrounding Coral Reef, Parapriacanthus ransonneti, Raja Ampat, West Papua, Indonesia

759-12722 - Colored Coral Reef, Raja Ampat, West Papua, Indonesia

759-12721 - Pygmy Sweepers surrounding Coral Reef, Parapriacanthus ransonneti, Raja Ampat, West Papua, Indonesia

759-12300 - Scuba Diver and Coral Reef, Komodo National Park, Indonesia

759-12299 - Scuba Diver and Coral Reef, Komodo National Park, Indonesia

759-12296 - Species-rich Coral Reef, Komodo National Park, Indonesia

759-12285 - Colored Reef Top, Komodo National Park, Indonesia

759-12237 - Bargibanti Pygmy Seahorse, Hippocampus bargibanti, Komodo National Park, Indonesia

759-12236 - Bargibanti Pygmy Seahorse, Hippocampus bargibanti, Komodo National Park, Indonesia

759-12141 - Scuba Diver over Coral Reef, Russell Islands, Solomon Islands

759-12142 - Scuba Diver over Coral Reef, Russell Islands, Solomon Islands

759-12137 - Scuba Diver over Coral Reef, Russell Islands, Solomon Islands

759-12136 - Scuba Diver over Coral Reef, Russell Islands, Solomon Islands

759-12134 - Scuba Diver over Coral Reef, Russell Islands, Solomon Islands

759-12135 - Scuba Diver over Coral Reef, Russell Islands, Solomon Islands

759-12130 - Scuba Diver over Coral Reef, Russell Islands, Solomon Islands

759-12089 - Yellowback Anthias in Coral Reef, Pseudanthias cf tuka, Marovo Lagoon, Solomon Islands

759-12076 - Sea Fan in Coral Reef, Melithaea sp., Marovo Lagoon, Solomon Islands

759-12077 - Sea Fan in Coral Reef, Melithaea sp., Marovo Lagoon, Solomon Islands

759-12037 - Gorgonian Goby, Bryaninops amplus, Marovo Lagoon, Solomon Islands

759-11922 - Scuba Diver over Coral Reef, Osprey Reef, Coral Sea, Australia

759-11921 - Scuba Diver over Coral Reef, Osprey Reef, Coral Sea, Australia

759-11920 - Scuba Diver over Coral Reef, Osprey Reef, Coral Sea, Australia

759-11919 - Scuba Diver over Coral Reef, Osprey Reef, Coral Sea, Australia

759-11918 - Shoal of Bigeye Trevally over Coral Reef, Caranx sexfasciatus, Osprey Reef, Coral Sea, Australia

759-11512 - Coral Reef with Sea Fan, Melithaea sp., Kai Islands, Moluccas, Indonesia

759-11474 - Diver over Field of Whip Corals, Junceella fragilis, Tanimbar Islands, Moluccas, Indonesia

759-11465 - Gorgonian Fan and Chromis, Chromis sp., Tanimbar Islands, Moluccas, Indonesia

759-11463 - Gorgonian Fan and Coralfishes, Tanimbar Islands, Moluccas, Indonesia

759-11410 - Red Whip Coral, Ellisella ceratophyta, Triton Bay, West Papua, Indonesia

759-11409 - Featherstar in Coral Reef, Triton Bay, West Papua, Indonesia

759-11351 - Ghost Goby in Soft Coral, Pleurosicya sp., Triton Bay, West Papua, Indonesia

759-11349 - Shoal of Bigeye Snapper, Lutjanus lutjanus, Triton Bay, West Papua, Indonesia

759-11914 - Scuba Diver over Coral Reef, Osprey Reef, Coral Sea, Australia

759-11906 - Colored Coral Reef, Osprey Reef, Coral Sea, Australia