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Supporting the urgency of climate action to combat marine heatwaves

Published July 8, 2026 at 6:52 PM UTC

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The escalating frequency and intensity of marine heatwaves present a clear and pressing threat to global marine ecosystems. In 2024, the world witnessed unprecedented SSTs, setting new records and leading to widespread coral bleaching and disruptions to marine life. The Mediterranean Sea, for instance, experienced record-high-intensity heatwaves affecting 62% of its area. These events are primarily driven by climate change, reduced cloud cover, altered ocean currents, and a strong El Niño event. The persistence of such extreme conditions highlights the urgent need for comprehensive global action to mitigate climate change. Implementing strategies to reduce greenhouse gas emissions, protect marine habitats, and enhance the resilience of marine species is crucial. Failure to act could result in irreversible damage to marine biodiversity, affecting food security and economies reliant on marine resources.