The colour of these hard corals in Thaiiland is due to bleaching, which is caused mainly by heat stress resulting from high sea temperatures.

Thailand, in rare step, shuts 10 dive sites over coral bleaching crisis

Warming waters and rising visitor numbers have damaged coral reefs and their ecosystems, national parks chief says. Sites will be checked before peak tourism season starts in November

Topic |   Asia travel

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The colour of these hard corals in Thaiiland is due to bleaching, which is caused mainly by heat stress resulting from high sea temperatures.
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