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Australia's Great Barrier Reef experiences record coral loss following mass bleaching

Research released on Wednesday revealed that Australia's Great Barrier Reef suffered the greatest decline in coral coverage in two of three of its regions in the past year. This was after a mass coral bleaching which was among the worst ever recorded.

The Australian Institute of Marine Sciences reported that the reef experienced its largest annual decline of coral cover in the northern and southern areas since monitoring began in 1979. Coral cover dropped between a quarter to a third following several years of steady growth.

Mike Emslie is the head of the institute's long-term monitoring programme.

This is a phenomenon which has emerged in the last 15 to 20 years, and it indicates an ecosystem that is under stress.

The world's largest ecosystem, the reef, extends for 2,400 km (1 500 miles) off of the coast of Queensland, in the north.

Since 2016, there have been five summers with mass coral bleaching. This occurs when large sections of reef turn white from heat stress. They are then at greater risk of dying.

Report: The 2024 event was the largest ever recorded event on the reef with extreme to high bleaching in all three of its regions.

The Great Barrier Reef does not appear on the UNESCO list of endangered world heritage sites, but the UN has recommended that it be included.

Australia has been lobbying for years to remove the reef from the endangered list as it could harm tourism. The reef contributes A$6.4billion ($4.2billion) to Australia's economy each year. (Reporting and editing by Lincoln Feast in Sydney, Alasdair pal in Sydney)

(source: Reuters)