The reef's head management agency confirmed there was "very widespread bleaching detected". The authority says more areas have been damaged than in previous mass die-offs.
"I saw coral bleaching both at the surface and as deep as 16 metres", the Climate Council said in a statement Thursday (March 26) citing Dean Miller from the Great Barrier Reef Legacy.
Warmer sea levels, especially in February, are thought are thought to have caused huge coral loss.
According to the Great Barrier Reef Marine Park Authority (GBRMPA), air surveillance has shown that some southern and so far completely or largely spared areas of the world's largest reef, the Great Barrier Reef on the north coast of Australia, are moderately or even heavily bleached. on Thursday with.
The reef system covers 2,300 kilometres and is a world heritage site.
That conditions exacerbated a years-long drought in much of eastern Australia, contributing to the summer's devastating wildfires that burnt out an area nearly the size of England.
About 80 reefs between Tully and Townsville were badly bleached, he said. Director of the ARC Centre of Excellence for Coral Reef Studies, Professor Terry Hughes, took part in the recent aerial surveys and noted on Twitter that this is worst than past years, along with some more grim observations. "Climate change remains the single greatest challenge to the reef", said the agency.
The Great Barrier Reef is roughly estimated to give support to thousands of marine species, and it plays quite a significant role in the lives of some of the aboriginal groups and the natives of the Torres Strait Islands, located between the Australian mainland and New Guinea.
"Coal-driven climate change is threatening our handsome reef, and the many communities and tourism workers who depend on a healthy reef for their livelihoods which are already at risk from the coronavirus outbreak", said Kate Smolski, acting program director of Greenpeace Australia Pacific.
The world's largest reef system has suffered another mass bleaching event. "The reef had only just begun recovering from impacts in 2016 and 2017 and now we have a third event", chief scientist David Wachenfeld told the BBC.
The Great Barrier Reef Marine Park Authority past year downgraded its outlook for the corals' condition from "poor" to "very poor" due to warming oceans.