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Record-breaking ocean heat has caused the worst global coral bleaching event ever recorded, affecting over 80% of the world's reefs. Reefs in at least 82 countries have experienced bleaching-level heat since January 2023. Even previously resilient reefs have been impacted, highlighting the severity of ocean warming. Scientists warn of widespread coral death and the devastating ecological consequences, urging global action to reduce fossil fuels and invest in clean energy.

Prepared by Olivia Bennett and reviewed by editorial team.