Great Barrier Reef may enters ‘critical time’

Australia's Great Barrier Reef is at risk of severe coral bleaching if warm March weather persists. Previously, heat waves in 2016 and 2017 led to significant coral loss, with 30% dying in 2016 and another 20% in 2017. The reef, comparable in size to Japan, faces ongoing threats from climate change.

What is the significance of the warmer-than-average March weather for the Great Barrier Reef?

What percentage of corals died in 2016 and 2017 due to heat stress?