The study examines the impact of bottom trawling on atmospheric CO₂ emissions and ocean acidification. Using satellite-inferred fishing events and carbon cycle models, the authors find that 55-60% of CO₂ released into the water column by bottom trawling is emitted to the atmosphere within 7-9 years. Between 1996 and 2020, trawling could have released up to 0.34-0.37 Pg CO₂ yr⁻¹ to the atmosphere globally, contributing to a cumulative increase in atmospheric CO₂ concentrations of 0.97-1.14 ppm. The study also highlights that trawling can lead to localized ocean acidification, particularly in semi-enclosed seas like the East and South China Seas. The findings suggest that managing bottom trawling could be an effective climate solution, reducing atmospheric CO₂ concentrations and mitigating ocean acidification.The study examines the impact of bottom trawling on atmospheric CO₂ emissions and ocean acidification. Using satellite-inferred fishing events and carbon cycle models, the authors find that 55-60% of CO₂ released into the water column by bottom trawling is emitted to the atmosphere within 7-9 years. Between 1996 and 2020, trawling could have released up to 0.34-0.37 Pg CO₂ yr⁻¹ to the atmosphere globally, contributing to a cumulative increase in atmospheric CO₂ concentrations of 0.97-1.14 ppm. The study also highlights that trawling can lead to localized ocean acidification, particularly in semi-enclosed seas like the East and South China Seas. The findings suggest that managing bottom trawling could be an effective climate solution, reducing atmospheric CO₂ concentrations and mitigating ocean acidification.