The worst coral bleaching event ever recorded damaged over 50% of reefs

Science Daily

February 12, 2026

Coral reefs, worth an estimated $9.8 trillion a year to humanity, are in far worse shape than previously realized. A massive international study found that during the 2014–2017 global marine heatwave, more than half of the world’s reefs suffered significant bleaching, and many experienced large-scale coral death.