Global Coral Bleaching Monitor

4th global bleaching event — destination reef heat stress from NOAA Coral Reef Watch (Alert Levels 1–5).

Compiled daily

Global Alert Level (top 20 destinations avg)

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of top 20 destinations

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bleaching-level heat stress

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cumulative globally

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since 15 Apr 2024

NOAA CRW

Reef destinations map

Destination	Region	Alert	7-day max	DHW	Updated

Curated headlines