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marine biologist measures a bleached coral underwater
Female diver posing over hard coral reef with a school of anthias fish and other marine life. Scuba diving experience in Andaman sea, Thailand.
Man scuba diver cleaning plastic  from the tropical coral reef. World ocean contaminated by plastic. Environment pollution concept.
Diver on a reef in the gulf of Aqaba in Jordan
Two scuba divers silhouetted against the sun while they explore a coral reef
wreck dive , school of fish , anemon , tropical fish , Nemo , clown fish , caretta
View of a female scuba diver in Palau, Micronesia
Close up of a scuba diver holding an underwater camera with two lights facing the camera with coral reef in the foreground
A woman doing scuba diving near a shipwreck
marine biologist measures bleached coral
Scuba divers couple  near beautiful coral reef surrounded with shoal of coral fish and three yellow butterfly fish
Scuba diving. Beautiful sea life. Underwater Young women Scuba diver explore and enjoy  Coral reef  Sea life
Scuba divers  with reef coral in the similan, Thailand
Camouflaged diver swimming over healthy coral reef ecosystem into bright sunlight rays. Great Barrier Reef, Queensland, Australia.
Red sea, Africa october 2015: Scuba divers explore sunken ships at the bottom of the sea. Marine life underwater in blue ocean. Observation animal world. Scuba diving adventure in Red sea
Looking up from 16m depth to the entrance to the Blue Holes of Palau 7°5'56.045 N 134°14'32.42 E
Underwater scuba diving. Male diver swimming with a school of barracuda fish in crystal clear blue water at Racha island, one of the beautiful dive sites of Andaman Sea in Phuket, Thailand.
He films it on his underwater camera
Underwater photo from a scuba dive in the Andaman Sea
View of a female diver doing a hand shark signal during dive
A group of scubadivers explores the ocean waters of Cozumel, Mexico.
A DSLR underwater photo of a woman scuba diving in Tiputa Pass, Rangiroa, French Polynesia. She is swimming in profile to the camera from left to right over a big reef with some scattered small fishes.  The water is clear blue with many meters in visibility. She is letting go lots of bubbles.
An underwater photographer taking a picture on the reef and a school of fish in the background
Magical underwater scenery captured while scuba diving during summer vacation in Montenegro at the Adriatic coast.
Lady diver in the Red Sea, Yanbu, Saudi Arabia. In the background a gorge in the reefs
Caribbean coral reef
Scuba Diver on coral reef in clear blue water, Diving at South West Pinnacle on Koh Tao, Thailand
Scuba diving. Beautiful sea life. Underwater scene with young women, scuba diver, explore and enjoy at coral reef. School of red sea fish ( scalefin anthias ). Pseudanthias squamipinnis .
Female diver behind a big sea fan by the dive spot called Big Drop-Off (Ngemelis Wall). The drop-off starts in extremely shallow water and falls to depths greater than 900ft. Palau has incredible dives to offer including the drop off's where the dives come along walls covered with stunning corals.
Woman free diver glide in trospical blue sea. Freediver girl swims underwater in Maldives
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