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Story summary
- A study finds chronic ocean warming reduces marine life by 7.2% for every 0.1°C increase per decade.
- Researchers analyzed 33,000 populations from 1993 to 2021, showing warming can cause biomass to drop 19.8% within a year.
- Marine heatwaves may temporarily boost some fish, but they mask the long-term decline caused by climate change and deoxygenation.
