Coral bleaching threatens Sydney and returns to Great Barrier Reef amid unusually warm waters

By Peter Hannam
Updated February 15 2017 - 10:14pm, first published 10:03pm
The Great Barrier Reef off Port Douglas. Photo: Jason South
The Great Barrier Reef off Port Douglas. Photo: Jason South
Reef Beach in Sydney. Photo: Cameron Spencer
Reef Beach in Sydney. Photo: Cameron Spencer

Unusually warm sea temperatures and the prospect of more to come have reef scientists worried that the Great Barrier Reef may experience another major coral bleaching event. Sydney's corals may also be at risk.

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