The world's largest coral reefs face the risk of permanent wiping

What no one wants to happen to the Great Barrier Reef is now true when scientists have recently released the announcement, the world's largest coral reef is going through a period close to perdition.

According to ScienceAlert, a hot summer in Australia and the latest survey showed that more than two-thirds of the Great Barrier Reef were severely destroyed by coral bleaching.

The incident took place less than 12 months after data recorded 93% of coral reefs on the Great Barrier Reef were severely destroyed in 2016. However, this year, the situation has become worse. and spread south of the coral reef.

It will take about a decade for the entire reef to recover.

Data from the latest survey show that, over a length of more than 2,300 kilometers of the Great Barrier Reef, there were 1,500km of bleached coral. If last year, the El Nino phenomenon was the leading cause of coral death due to the sudden change of sea currents, this year, the problem was very different.

Researchers estimate that it will take about a decade for the entire coral reef to recover, but it will take a year or two without coral bleaching.

It is known that this is the fourth time that the Great Barrier Reef has been severely damaged by the impact of nature. Previous times were in 1998, 2002, 2016 and now in 2017. According to James Kerry, researcher at ARC Center specializes in University coral reefs. James Cool, the white coral reefs here are not completely dead, they are only listed as the most likely to die due to environmental impacts.

The intervention from the accidental temperature makes corals unable to feed themselves, gradually turns white and stops growing.

The phenomenon of coral bleaching occurs when the water temperature becomes warmer, the algae called zooxanthellae , living symbiosis with the polyp in coral will produce toxic oxygen radicals. At this time, the soft-bodied Polyp will push the zooxanthellae algae out of the coral, making it impossible for corals to photosynthesize and get normal nutrition.

The intervention from the accidental temperature makes corals unable to feed themselves, gradually turns white and stops growing. Zooxanthellae algae live directly in coral with Polyp.

According to Jon Brodie, expert on water quality at the university. James Cook said the Great Barrier Reef is in the final stages, uncontrollable. Brodie also said that the Australian government had given up before the war to protect the survival of the Great Barrier Reef.

You can see the destruction of coral bleaching phenomenon this year with last year in the map below.

Coral reefs are struggling with more than the effects.

Damage from bleaching has spread to 500km to the south (red indicates the ongoing bleaching of coral).

Leading researcher Terry Hughes said coral reefs are struggling with more than the effects. As the temperature rises, the coral will experience more events. Specifically, the temperature of 1 degree Celsius has so far caused 4 serious events in the last 19 years.

Above all, the leading solution given at the moment, is to cut greenhouse gas (CO2) emissions , the leading cause of rising global temperatures and oceans. The decline in global warming is not yet a definitive solution, but it will ensure some safety for the remaining coral reefs, while continuing to raise hopes of recovering the dead coral reefs in the future.