Australia's Great Barrier Reef suffers third bleaching event in 5 years

Recovering coral colonies in the Great Barrier Reef off the coast of Cairns, Australia, last October. Back-to-back bleaching events in 2016 and 2017 caused up to half of all shallow water corals in the northern and central sections of the reef to die
Recovering coral colonies in the Great Barrier Reef off the coast of Cairns, Australia, last October. Back-to-back bleaching events in 2016 and 2017 caused up to half of all shallow water corals in the northern and central sections of the reef to die. This year, temperatures have soared in the southern section, particularly for the inshore reef areas. PHOTO: REUTERS
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Australia's Great Barrier Reef has suffered widespread coral bleaching after sea temperatures reached record high levels last month, scientists say.

How severe the event was will be known in a few weeks, once aerial surveys along the 2,300km reef are finished and sea temperatures fall.

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A version of this article appeared in the print edition of The Straits Times on March 13, 2020, with the headline Australia's Great Barrier Reef suffers third bleaching event in 5 years. Subscribe