As a fourth coral bleaching crisis begins, scientists warn reefs are being hit harder each time. The levels of heat stress recorded were so severe and unprecedented, Coral Reef Watch created new, higher bleaching alert levels.

As a fourth coral bleaching crisis begins, scientists warn reefs are being hit harder each time. The levels of heat stress recorded were so severe and unprecedented, Coral Reef Watch created new, higher bleaching alert levels.

Source: The_Weekend_Baker