Great Barrier Reef Faces 'Catastrophic' Coral Bleaching Crisis

A recent study has revealed that more than 40% of corals at One Tree Island in the Great Barrier Reef experienced severe bleaching due to rising water temperatures, marking the most extensive coral bleaching event to date. Researchers from the University of Sydney monitored 462 coral colonies, discovering that 193 were dead by July 2024, while 113 others showed lingering signs of bleaching.

The investigation, led by marine biologist Prof. Maria Byrne, indicated that only 92 coral colonies managed to avoid bleaching entirely. The study highlights the critical impact of climate change, as many of the resorting coral colonies died from a flesh-eating disease known as black band, further exacerbating the crisis.

The Australian Institute of Marine Science reported a significant decline in hard coral cover in the Capricorn-Bunker sector, with a staggering 41% drop noted since monitoring commenced in the mid-1980s. Researchers are concerned about potential back-to-back bleaching events as coral reefs face continued heat stress, with temperature readings already exceeding average conditions by 1.2°C.

With UNESCO requesting an update on the reef's health, there is an urgent call for increased efforts to protect this vital marine ecosystem. Experts warn that the coral's recovery remains uncertain, emphasizing the need for immediate action against climate change to prevent further devastation.