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marine biologist surveys bleached coral
Freediving on the rope in a sea. Male freediver descends along the rope in monofin
Common Octopus Flight (Octopus vulgaris) Underwater
Ocean Diver swimming through the deep blue in an underwater cave towards the sunlight at water’s surface
Man scuba diver cleaning plastic  from the tropical coral reef. World ocean contaminated by plastic. Environment pollution concept.
Close up shot of an octopus in the blue sea.
View of a female scuba diver in Palau, Micronesia
Big orange octopus swimming near the reef in Indian ocean
Male scuba diver with camera taking a photo with Gorgonian Sea Fan coral at North Andaman, a famous scuba diving dive site and stunning underwater landscape in Thailand.
Diver on a reef in the gulf of Aqaba in Jordan
Common octopus (Octopus vulgaris). Wildlife animal.
Camouflaged diver swimming over healthy coral reef ecosystem into bright sunlight rays. Great Barrier Reef, Queensland, Australia.
captures of tropical species in captivity
Bigfin Reef Squids are easy to distinguish from other squids in that they possess thick and muscular oval fins that extend around almost the entire mantle. Because of these fins, bigfin reef squids are sometimes mistaken for cuttlefish. The bigfin reef squid is the most widespread species in the genus Sepioteuthis. It is found in temperate and tropical regions of the Indian Ocean and the Western Pacific Ocean.\nAt night, when the Bigfin Reef Squids are most active, they are commonly found in shallow areas from 0-100m around reefs, sea grass beds, sandy bottoms, or rocky shorelines. They surface at night, as it is less likely to be detected by predators. During the day, they generally move to deeper waters or near any form of cover, such as floating driftwood, reefs, rocks, or grasses.\nSquids have speedy colour-changing abilities as their pigment cells, the chromatophores, rapidly change size and colour and the visual effect is enhanced by light reflecting cells, the iridocytes. They can shoot ink (dark melanin pigment) to confuse predators and aide in escapes. \nTriton Bay, West Papua Province, Indonesia, 3°56'17.7941 S 134°7'10.2802 E at 1m depth
wide angel shot of bait ball at scuba dive around Curaçao /Netherlands Antilles
Flamingo Tongue (Cyphoma gibbosum) against dark background, off coast of Roatan Honduras
A Japanese man is enjoying Snorkeling
Coconut Octopus - Amphioctopus marginatus living in a shell. Underwater life of Tulamben, Bali, Indonesia.
Common Octopus underwater (Octopus vulgaris)
Teenage girl holding a octopus in her hand under the sea.
scuba diver makes OK sign, underwater scene with exotic fishes and coral reef
Maja Squinado (European Spider Crab) in it's natural environment on the sea bed off Portwinkle in south Cornwall.
a girl dives in apnea in a Mediterranean seabed in Calabria (Italy)
emperor angelfish, Mutton snapper,French angelfish, sea horse, Cuttlefish , stone fish
Caribbean marine life with the squirrel fish and a female diver in Grand Cayman - Cayman Islands
Bigfin Reef Squid - Sepioteuthis lessoniana hunts at night. Underwater life of Tulamben, Bali, Indonesia.
Scuba diver near beautiful coral reef surrounded with shoal of colorful coral fish and butterfly fish
Diving around corals n the crystal clear waters of Sharm el Sheikh in Egypt.
Two scuba divers silhouetted against the sun while they explore a coral reef
Mansuar island, Raja Ampat, West Papoua, Indonesia
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