Analysis of high-resolution drone imagery concludes 97% of corals died at a Lizard Island reef between March and June this year

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At least 97% of corals on a reef in the Great Barrier Reef’s north died during one of the worst coral bleaching events the world’s biggest reef system has ever seen, according to new analysis.

Scientists at several institutions used high-resolution drone imagery to track the bleaching and death of corals on a reef at Lizard Island.

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© Photograph: David Gray/AFP/Getty Images

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© Photograph: David Gray/AFP/Getty Images

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© Kendrick Brinson for The New York Times

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© Jorge Silva/Reuters

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