​Marine Heatwaves in Western Australia Intensify Due to Climate Change

A new analysis by Climate Central revealed that the marine heatwaves (MHWs) off Western Australia, which caused the death of over 30,000 fish in January 2025, were made up to 100 times more likely due to climate change. These heatwaves, which began in September 2024, are still ongoing and intensifying.

What are marine heatwaves?

  • MHWs occur when sea surface temperatures rise 3–4°C above average for at least five days.
  • They can last for weeks, months, or even years, affecting marine ecosystems.
  • Since 1982, the number of MHW days has doubled, becoming more frequent and intense.
  • MHWs have increased by 50% over the past ....
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Ecology & Environment