Coral die-off in Great Barrier Reef reaches record levels

Bleaching has killed more than two-thirds of corals in some areas

scuba diver near dead coral

A scientist examines corals at Zenith Reef, off the coast of Australia’s Cape York Peninsula. Reefs in this area of the Great Barrier Reef suffered high mortality from coral bleaching, researchers have determined.

Andreas Dietzel/ARC Centre of Excellence for Coral Reef Studies

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