The Great Barrier Reef off the coast of the Whitsunday Islands. Photo: AFP The Great Barrier Reef off the coast of the Whitsunday Islands. Photo: AFP
The Great Barrier Reef off the coast of the Whitsunday Islands. Photo: AFP

Second year of mass coral bleaching means Great Barrier Reef may not recover

Bleaching occurs when abnormal environmental conditions, such as warmer sea temperatures, cause corals to expel tiny photosynthetic algae, draining them of their colour

The Great Barrier Reef off the coast of the Whitsunday Islands. Photo: AFP The Great Barrier Reef off the coast of the Whitsunday Islands. Photo: AFP
The Great Barrier Reef off the coast of the Whitsunday Islands. Photo: AFP
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