Gray Reef Shark Gallery

Wider Image - Great Barrier Reef At Risk

Tourists walk from a boat after diving in an area called the Coral Gardens located at Lady Elliot Island, north-east of the town of Bundaberg in Queensland, Australia, June 9, 2015. UNESCO World Heritage delegates recently snorkelled on Australias Great Barrier Reef, thousands of coral reefs, which stretch over 2,000 km off the northeast coast. Surrounded by manta rays, dolphins and reef sharks, their mission was to check the health of the world's largest living ecosystem, which brings in billions of dollars a year in tourism. Some coral has been badly damaged and animal species, including dugong and large green turtles, are threatened. UNESCO will say on Wednesday whether it will place the reef on a list of endangered World Heritage sites, a move the Australian government wants to avoid at all costs, having lobbied hard overseas. Earlier this year, UNESCO said the reef's outlook was "poor". REUTERS/David Gray
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Grey reef shark patrolling in blue water, Palau, Micronesia

Grey reef shark patrolling in blue water amongst dog-tooth triggerfish and fusiliers, Palau, Micronesia

© Mathieu Meur/Stocktrek Images

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Gray Reef Sharks (Carcharhinus Amblyrhynchos) And Divers At A Dive Site Named Vertigo

Gray Reef Sharks (Carcharhinus Amblyrhynchos) And Divers At A Dive Site Named Vertigo, Off The Island Of Yap; Yap, Micronesia

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