Mass Coral Mortality at One Tree Reef Signals Escalating Climate Threat
On 10th December 2025, scientists reported that nearly 75% of Goniopora (flowerpot/daisy) corals at One Tree Reef on the Great Barrier Reef have died following severe bleaching and an outbreak of black band disease.
- The losses occurred during the world’s fourth global mass bleaching event, which has now affected around 84% of coral reefs worldwide, the most extensive bleaching recorded to date.
- Extreme ocean heat caused prolonged bleaching, leaving corals weakened and highly susceptible to black band disease (BBD), a rare but aggressive bacterial infection that rapidly destroys coral tissue.
- Although Goniopora corals are usually considered thermally tolerant and long-lived, the combination of ....
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