Great Barrier Reef at risk of ‘collapse’, scientists warn

Australia's Great Barrier Reef is on the brink of severe coral bleaching and potential "ecosystem collapse," scientists warned on July 21, citing the imminent threat of the 2026 El Nino weather phenomenon. This iconic natural wonder, stretching 2,300km along Queensland's coast and vital to Australia's tourism industry, faces an "extreme El Nino" that could trigger localized species extinctions.

Marine conservation ecologist Morgan Pratchett of James Cook University described the situation as a significant concern. "It's not outside of the realm of possibility that the next major disturbance will lead to localised species extinctions... and widespread ecosystem collapse," Pratchett stated at the International Coral Reef Symposium in Auckland, New Zealand. The 2026 El Nino is predicted to be exceptionally strong, warming Pacific Ocean surface temperatures and altering global weather patterns.

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It’s not outside of the realm of possibility that the next major disturbance will lead to localised species extinctions... and widespread ecosystem collapse.

Despite the United Nations expressing "utmost concern" and monitoring the reef since 2021, it was not listed as endangered in July. However, the reef has already experienced its sixth mass coral bleaching event since 2016, with hard coral cover declining substantially in 2024-2025 due to above-average water temperatures. Other pressures include extreme weather, land-based pollution, coastal development, and outbreaks of the Crown of Thorns starfish.

Professor Ove Hoegh-Guldberg from the University of Queensland criticized the lack of government action, drawing a stark analogy: "If you were on a big boat, like the Titanic, and someone comes up to you and says the boat’s going down, you bloody well get on those lifeboats and start acting and do stuff." He lamented, "We're not doing that. The ship is starting to sink in a really massive way, and we're not seeing it as what it is. It is so serious."

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If you were on a big boat, like the Titanic, and someone comes up to you and says the boat’s going down, you bloody well get on those lifeboats and start acting and do stuff. We’re not doing that. The ship is starting to sink in a really massive way, and we’re not seeing it as what it is. It is so serious.