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Ocean acidification threatens the Great Barrier Reef by reducing the viability and strength of coral reefs. The Great Barrier Reef, considered one of the seven natural wonders of the world and a biodiversity hotspot, is located in Australia. Similar to other coral reefs, it is experiencing degradation due to ocean acidification.
Covering nearly 133,000 square miles (345,000 square kilometers), the Great Barrier Reef is the world’s largest coral reef, home to more than 1,500 species of fish and 411 species of hard corals.
During that time, between 2016 and 2024, the Great Barrier Reef, the world’s largest coral reef ecosystem and one of the most biodiverse, suffered mass coral bleaching events.
The Great Barrier Reef Marine Park Authority (GBRMPA), the agency tasked with monitoring the reef's health, confirmed that "a widespread, often called mass, coral bleaching event is unfolding ...
The Great Barrier Reef experienced its first major bleaching event in 1998. Since then, bleaching events have increased in frequency, with three events occurring in the years 2016–2020. [53] Bleaching is predicted to occur three times a decade on the Great Barrier Reef if warming is kept to 1.5 °C, increasing every other year to 2 °C. [54]
Higher water temperatures in 2016 have hurt much of the corals in the reef, and 67% of the reef's northern section died. Great Barrier Reef hit with worst coral bleaching on record Skip to main ...
John Brewer Reef is within the Great Barrier Reef Marine Park. In March 2022 reef-wide cover of hard corals was 21.8 %, [6] with some concerns from mass coral bleaching. [7] Citizen scientists have reported over 240 species of fish and invertebrates, with the most notable being the whitetip reef shark. [8]
The report comes three days before a United Nations delegation is due to assess whether the reef’s World Heritage listing should be downgraded due to the ravages of climate change.