More than 80% of the world’s reefs hit by bleaching after worst global event on record

An ashen pallor and an eerie stillness all that remains where there should fluttering fish and vibrant colours in the reefscape, one conservationist saysThe world’s coral reefs have been pushed into “uncharted territory” by the worst global bleaching event on record that has now hit more than 80% of the planet’s reefs, scientists have warned.Reefs in at least 82 countries and territories have been exposed to enough heat to turn corals white since the global event started