The mass bleaching that started in February 2023 is now the most extensive on record, the National Oceanic and Atmospheric Administration told Reuters this week.

STORY: Once vibrant in color... much of the world's coral reefs have turned completely white. "This is the biggest coral bleaching event on record."In an exclusive interview with Reuters, Derek Manzello of the National Oceanic and Atmospheric Administration said about 77% of the world's coral reefs have been subject to bleaching-level heat stress - the most extensive on record.

COPENHAGEN: The mass bleaching of coral reefs around the world since February 2023 is now the most extensive on record, the National Oceanic

A global coral bleaching event that began last year has quickly grown to the largest on record, according to a US environmental agency.