'Tipping point' threshold reached for world's coral reefs

The latest Global Tipping Points Report suggests the world's coral reefs are at risk of mass dieback. More than 80 per cent of coral reefs worldwide have bleached in a marine heatwave in the past two years.

84% of Reefs Affected By Largest Coral Bleaching Event on Record

From 1 January 2023 to 20 April 2025, bleaching-level heat stress has impacted 83.7% of the world’s coral reef area.