A new global report warns coral reefs have entered a collapse phase as ocean temperatures keep rising.

A new Global Tipping Points Report 2025, led by the University of Exeter and involving more than 160 scientists across 87 institutions, has concluded that warm-water coral reefs have become the first major ecosystem on Earth to cross a climate tipping point. The report finds that at roughly 1.4°C of global warming—above the estimated 1.2°C threshold for reef survival—mass bleaching and coral mortality have become unavoidable. Researchers say this marks a profound shift in the planet’s ecological balance, with ripple effects expected to impact marine biodiversity, fisheries, and global coastal communities.








