More than 80% of the world's coral reefs fell victim to harmful bleaching and is now in "uncharted territory" with the worst global bleaching event in recorded history.

Coral reefs have long been losing their color due to bleaching, but a recent uptick has caused nearly all of the world's reefs to be damaged. A record-breaking amount of marine life fell victim to the bleaching, and scientists say the effects may be irreversible.