Great Barrier Reef suffers worst coral decline on record
Summary
Parts of Australia's Great Barrier Reef have experienced record coral decline in recent years, according to the Australian Institute of Marine Science (AIMS). The decline is mainly due to heat stress from climate change, with additional damage from cyclones and crown-of-thorns starfish. AIMS' report warns that the reef could reach a point where it cannot recover between damaging events.Key Facts
- The Great Barrier Reef has seen the largest coral decline since monitoring began nearly 40 years ago.
- Heat stress from climate change is the main cause of coral bleaching.
- Tropical cyclones and crown-of-thorns starfish also contribute to coral damage.
- AIMS surveyed 124 coral reefs between August 2024 and May 2025.
- The reef has experienced six major bleaching events since 2016.
- Recovery of coral is possible but depends on favorable conditions and time.
- The Australian government has reduced starfish numbers with a culling program.
- The Great Barrier Reef is a significant ecosystem, accounting for 25% of marine species.
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