The Great Barrier Reef has faced severe damage from recent bleaching events caused by rising ocean temperatures. A 2025 study published in Coral Reefs highlights the devastating impact of the 2024 Fourth Global Coral Bleaching Event at Lizard Island, revealing up to 92% coral mortality.
Researchers used drone technology to capture high-resolution imagery of the reef before, during, and after the bleaching event, providing unprecedented precision. The drones enabled them to document the extent of coral bleaching and assess coral mortality over large areas.
The study revealed that coral mortality rates in some areas surpassed 92%, with certain sections experiencing total collapse. This finding is alarming, as Lizard Island has long been considered a resilient part of the Great Barrier Reef. Despite environmental challenges in recent years, the reef had shown signs of recovery prior to the 2024 bleaching event.
The study highlights the sensitivity of coral ecosystems to even modest increases in ocean temperature. As global warming continues, coral reefs around the world will likely face greater threats, with potential irreversible damage if immediate action is not taken. The research underscores the urgent need for action to protect marine life and prevent further collapse of the reef ecosystem.
The loss of coral cover not only affects marine life but also has significant socioeconomic consequences, particularly for communities reliant on coral reefs for tourism and fishing industries. A broader initiative to monitor and protect coral reefs across Australia is underway, with funding from the Australian Museum Lizard Island Critical Grant.
Source: https://dailygalaxy.com/2025/07/drone-coral-mortality-great-barrier-reef