ChartOur World in Data

Number of coral bleaching events

The number of moderate (up to 30% of corals affected) and severe coral bleaching events (more than 30% of corals) measured at 100 fixed global locations. Bleaching occurs when stressful conditions cause corals to expel their algal symbionts.

Source
Our World in Data
Updated
06 Apr 2021
Last checked
17 Sept 2026
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Commercial use allowed
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Data visualization: Number of coral bleaching events

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Hughes et al. (2018)

Attribution: Hughes et al.

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