759-11364 - Scuba Diver and colored Coral Reef, Triton Bay, West Papua, Indonesia

759-11365 - Scuba Diver and colored Coral Reef, Triton Bay, West Papua, Indonesia

759-11363 - Scuba Diver and colored Coral Reef, Triton Bay, West Papua, Indonesia

759-11362 - Scuba Diver and colored Coral Reef, Triton Bay, West Papua, Indonesia

759-11361 - Scuba Diver and colored Coral Reef, Triton Bay, West Papua, Indonesia

759-11360 - Scuba Diver and Red Whip Coral, Ellisella ceratophyta, Triton Bay, West Papua, Indonesia

759-11359 - Scuba Diver and Soft corals, Umbellulifera sp., Triton Bay, West Papua, Indonesia

759-10972 - Scuba diver and Manta, Manta birostris, Socorro, Revillagigedo Islands, Mexico

759-10970 - Scuba diver and Manta, Manta birostris, Roca Partida, Revillagigedo Islands, Mexico

759-10969 - Scuba diver and Manta, Manta birostris, Roca Partida, Revillagigedo Islands, Mexico

759-10339 - Scuba Diver inside Cave, Zabargad, Red Sea, Egypt

759-10338 - Scuba Diver inside Cave, Zabargad, Red Sea, Egypt

759-10105 - Scuba Diver and Anax Sea Cucumber, Thelenota anax, North Male Atoll, Maldives

860-291056 - Scuba divers diving around the underwater part of a iceberg, Antarctic Peninsula, Antarctica

832-395094 - Woman wearing scuba diving weights before going underwater, Spain, Europe

832-395097 - Three scuba divers with all equipment heading to the sea, Andalusia, Spain, Europe

1116-51215 - Scuba divers swim through Pennant Butterflyfish (Heniochus diphreutes) feeding on zooplankton off the backwall of Molokini Crater near Maui Island; Molokini Crater, Maui, Hawaii, United States of America

860-290091 - Scuba diver under ice and ice formation, Arctic circle Dive Center, White Sea, Karelia, northern Russia

860-290090 - Scuba diver under ice walking upside down, exercise to practice orientation, Arctic circle Dive Center, White Sea, Karelia, northern Russia

860-290088 - Scuba diver under ice in a halocline cloud, a subtype of chemocline caused by a strong, vertical salinity gradient within a body of water. Arctic circle Dive Center, White Sea, Karelia, northern Russia

860-290089 - Scuba diver under ice walking upside down, exercise to practice orientation, Arctic circle Dive Center, White Sea, Karelia, northern Russia

860-290087 - Scuba diver exit the maina (sawed entry hole) to dive under the ice, Arctic circle Dive Center, White Sea, Karelia, northern Russia

860-290085 - Scuba diver under ice and ice formation, Arctic circle Dive Center, White Sea, Karelia, northern Russia

1350-2569 - Great barracuda, Sphyraena barracuda, and divers, Molasses Reef, Key Largo, Florida, USA, Atlantic Ocean

1350-2473 - Red (Lace) coral, Distichopora violacea, feather stars, and juvenile gray reef shark, Carcharhinus amblyrhynchos, Ailuk atoll, Marshall Islands, Pacific

1350-2570 - Scuba diver handles nurse shark, Ginglymostoma cirratum, Molasses Reef, Key Largo, Florida, USA, Atlantic Ocean

1350-2495 - Split image of lush vegetation and free diver observing lettuce coral, Turbinaria reniformis, next to cave entrance, Palau, Micronesia.

1350-2456 - Fan coral, Subergorgia sp., and diver silhouette against he sun, Namu atoll, Marshall Islands (N. Pacific).

1350-2436 - Thrill seekers experience cage diving with Galapagos sharks, Carcharhinus galapagensis, North shore, Oahu, Hawaii, USA

1350-2486 - Split image of Smallspotted dart, Trachinotus baillonii, swimming along the sandy shore at dusk, Rongelap, Marshall Islands, Micronesia

1350-2472 - Bluefin trevally, Caranx melampygus, Ailuk atoll, Marshall Islands, Pacific

1350-2513 - Common lionfish, Pterois volitans, blends in with a variety of soft corals and sponges, Cars, Dumaguete, Negros Island, Philippines.

1218-1496 - Couple scuba diving while exploring the coral reefs of Bonaire, Netherlands Antilles, Caribbean, Central America

1218-1497 - Man scuba diving while exploring the coral reefs of Bonaire, Netherlands Antilles, Caribbean, Central America

1116-49672 - A research diver from the MOC Marine Institute glues broken coral back together at Molokini Marine Preserve off the island of Maui, Hawaii. The coral is tagged and will be monitored, Maui, Hawaii, United States of America

1116-49671 - Research divers from the MOC Marine Institute map out coral damage at Molokini Marine Preserve off the island of Maui, Hawaii. In the future, data from here will help to determine the health of Hawaii's reefs, Maui, Hawaii, United States of America

1116-49082 - A male scuba diver in bright blue water, Makena, Maui, Hawaii, United States of America

1116-49674 - SCUBA diving instructor Anthony Manion practices skills with four students in a hotel pool, Maui, Hawaii, United States of America

1116-49670 - Wire coral goby (Bryaninops yongei) on wire coral (Cirrhipathes sp.), a relative of black coral.

1116-49673 - Research divers from the MOC Marine Institute glue broken coral heads back together and map out coral damage at Molokini Marine Preserve off the island of Maui, Hawaii. In the future, data from here will help to determine the health of Hawaii's reefs, Maui, Hawaii, United States of America

1116-49667 - A photographer lines up with a camera in a housing to shoot a large red soft coral fan, Indonesia

1116-49669 - Divers exploring the prop and rudder at the stern of The Carthaginian, a Lahaina landmark, that was sunk as an artificial reef off Lahaina, Maui, Hawaii in December 2005, Maui, Hawaii, United States of America

1116-49728 - Divers on a WW II Corsair fighter plane off Southeast Oahu, Oahu, Hawaii, United States of America

1116-49086 - Silhouette of a scuba diver in a cave, Makena, Maui, Hawaii, United States of America

1116-49676 - A photographer under a massive school of millions of sardines, Moalboal, Cebu, Central Visayas, Philippines

1116-49675 - Chambered nautilus (Nautilus pompilius) and divers, Palau, Micronesia

1116-49668 - A photographer lines up with a SLR in a housing with a macro lens to shoot at tiny crab perched on soft coral, Indonesia

1116-49677 - Divers explore a drop off covered with sponges and gorgonian and alcyonarian coral, Philippines

1116-49666 - The Malabar grouper (Epinephelus malabaricus) is one of the largest and most common cod found on coastal reefs. It can weight over 300 lbs and reach 4 feet in length, Fiji

1116-49732 - The Backwall at Molokini Marine Preserve drops down to 300 feet. Various reef fish stick close to a crevice here, Molokini, Maui, Hawaii, United States of America

1116-48272 - Scuba divers in the Great Blue Hole dive site on the Belize Barrier Reef. This site was made famous by Jacques Cousteau, who declared it one of the top five scuba diving sites in the world, Belize

1116-48269 - Scuba divers at Joe's Wall Dive Site, Belize Barrier Reef, Belize

1116-48275 - Scuba diver in the East Wall dive site, Belize Barrier Reef, Belize

1116-48273 - Scuba divers in the Great Blue Hole dive site on the Belize Barrier Reef. This site was made famous by Jacques Cousteau, who declared it one of the top five scuba diving sites in the world, Belize

1116-47554 - Scuba diver obscured by bubbles underwater at the dive site Blue Channel, Roatan Marine Park, Bay Islands Department, Honduras

1116-47553 - Scuba diver underwater at the dive site Cemetery Wall, South side of Roatan Island, Bay Islands Department, Honduras

1116-48274 - Scuba diver at Joe's Wall Dive Site, Belize Barrier Reef, Belize

1116-47552 - Scuba divers in Roatan Marine Park, West End Wall dive site, Roatan, Honduras

1116-48276 - Scuba diver underwater looking at the camera, Belize

1116-48270 - Scuba diver at Three Amigos Dive Site, Belize Barrier Reef, Belize

1116-48525 - Scuba diver swims through lava arches with sun rays, Cathedrals dive site, Lanai City, Lanai, Hawaii, United States of America

1116-46821 - Divers pictured hanging at 15 feet for a decompression stop before surfacing. The diver in the lead has released a safety float to mark their position to boats above, Maui, Hawaii, United States of America

1116-46823 - A diver feeds a green sea turtle (Chelonia mydas), an endangered species, at Sea Life Park's Underwater Sea Trek Adventure in their big tank, Oahu, Hawaii, United States of America

1116-46541 - A Coastal Manta Ray (Manta Alfredi) Swiming Though A Scuba Diver's Bubbles That Was Photographed While Scuba Diving The Kona Coast At Night, Kona, Island Of Hawaii, Hawaii, United States Of America

860-288000 - (Saccharina latissima), laminaria, a genus of 31 species of brown algae commonly called kelp covering a wall close to an iceberg with scuba diver silhouette, Tasiilaq, East Greenland

860-287960 - Scuba diver surrounded by shoal of Big-eye jacks (Caranx sexfasciatus), Cabo Pulmo Marine National Park, Baja California Sur, Mexico

860-287961 - Scuba diver surrounded by shoal of Big-eye jacks (Caranx sexfasciatus), Cabo Pulmo Marine National Park, Baja California Sur, Mexico

860-287968 - Scuba diver on the sandy bottom surrounded by shoal of Big-eye jacks (Caranx sexfasciatus), Cabo Pulmo Marine National Park, Baja California Sur, Mexico

860-287966 - Scuba diver with big Gulf grouper (Mycteroperca jordani), Cabo Pulmo Marine National Park, Baja California Sur, Mexico

860-287994 - Spit image of a scuba diver diving close to an iceberg, only in springtime, when the hard winter slowly subsides, are the ice-cold waters suitable for divers who can dive around a iceberg that floats in crystal-clear water, Tasiilaq, East Greenland

860-287991 - Split image of scuba divers before to dive under the ice, only in springtime, when the hard winter slowly subsides, are the ice-cold waters suitable for divers who can dive around a iceberg that floats in crystal-clear water, Tasiilaq, East Greenland

860-287984 - Laminaria (Saccharina latissima), a genus of 31 species of brown algae commonly called kelp in front of an iceberg with scuba diver, Tasiilaq, East Greenland

860-287971 - Scuba diver surrounded by shoal of Big-eye jacks (Caranx sexfasciatus), Cabo Pulmo Marine National Park, Baja California Sur, Mexico

860-287969 - Scuba diver swimming with a big shoal of Big-eye jacks (Caranx sexfasciatus), Cabo Pulmo Marine National Park, Baja California Sur, Mexico

1116-44669 - A Scuba Diver Prepares His Equipment Before Making A Dive, Britannia Beach, Howe Sound, British Columbia, Canada

1116-43559 - Scuba Divers Posing Underwater, Ixtapa-Zihuatanejo, Guerrero, Mexico

860-287084 - Scuba diver hunting the Invasive lionfish, alien species (Pterois volitans) caught to feed the crocodiles, Chinchorro Banks (Biosphere Reserve), Quintana Roo, Mexico

860-287083 - Scuba diver hunting the Invasive lionfish, alien species (Pterois volitans) caught to feed the crocodiles, Chinchorro Banks (Biosphere Reserve), Quintana Roo, Mexico

1174-5843 - Diver's fins in tropical water, Bora Bora, French Polynesia, Bora Bora, Bora Bora, French Polynesia

860-286679 - Scuba diver with sicklefin Mantas, Mobula tarapacana, Ambrosio dive site, Santa Maria Island, Azores, Portugal, Atlantic Ocean

1116-41494 - Slate pencil sea urchins (Heterocentrotus mammillatus) colour the hard coral in this Hawaiian reef scene with three free divers, Molokini Marine Preserve off the island of Maui, Maui, Hawaii, United States of America

1116-41499 - Two women free diving at Molokini Marine Preserve off the island of Maui, Maui, Hawaii, United States of America

1116-41500 - Two men free diving over a Hawaiian hard coral reef with slate pencil sea urchins (Heterocentrotus mammillatus), Hawaii, United States of America

1116-41503 - A group of divers and a manta ray (Manta alfredi) on one of the corners of the Backwall at Molokini Marine Preserve, Maui, Hawaii, United States of America

1116-41498 - Cautious and curious at the same time, this day octopus (Octopus cyanea) keeps a close eye on the diver, Hawaii, United States of America

832-381605 - Freediver swimming with underwater scooter, Red Sea, Egypt, Africa

832-381061 - Freediver swims with underwater scooter near a shipwreck, Red Sea, Egypt, Africa

1116-40003 - This dive site off the Kona coast is known as A Touch of Gray and is home of several juvinile Grey reef sharks (Carcharhinus amblyrhynchos), Hawaii, United States of America

1116-39998 - Diver and a well camouflaged Commerson's frogfish (Antennarius commersoni) perched at the bow of the wreck of the Alma Jane off Sabang Beach, Puerto Galera, Mindoro, Philippines.

1116-40002 - This dive site off the Kona coast is known as A Touch of Gray and is home of several juvinile Grey reef sharks (Carcharhinus amblyrhynchos), Hawaii, United States of America

1116-39760 - A diver swims over The Carthaginian, a Lahaina landmark, that was sunk as an artifical reef off Lahaina, Maui, Hawaii in December 2005. The Atlantis submarine visites the site several times every day, Maui, Hawaii, USA

1116-40001 - Diver along a drop off covered with gorgonian and alcyonarian coral, Fiji

1116-39989 - Scuba diver with a large school of Bluestripe Snappers (Lutjanus kasmira) swimming over healthy reef, Lanai City, Lanai, Hawaii, United States of America

1116-40005 - A photographer lines up with his smart phone in a housing on this Green sea turtle (Chelonia mydas) off the coast of Maui, Hawaii, United States of America

1116-39781 - Diver at the entrance to First Cathedral off the island of Lanai, Hawaii, United States of America

1116-39784 - Diver at one of the many openings around the dive site called First Cathedral off the island of Lanai, Hawaii, United States of America

1116-39988 - Scuba diver looking at bright Butterflyfish (Chaetodontidae), Lanai City, Lanai, Hawaii, United States of America

1116-40000 - Divers are framed by the twin openings at a dive site known as Skull Cave off the Kona coast of the Big Island, Hawaii, United States of America

1116-39738 - A snorkeler observes a group of Green Sea Turtles (Chelonia mydas) from above, Hawaii, United States of America

1116-39925 - Aerial view of the southern end of the reef surrounding the island of Yap, with a dive boat anchored at Yap Caverns, a famous site for scuba divers, Ngariy, Yap, Micronesia