The south-western Baltic Sea has about 3,000 kilograms of dissolved toxic chemicals released from unexploded ordnance, according to a new study. The substances were detected in almost all water samples taken in 2017 and 2018, with particularly high concentrations in the Bights of Kiel and L beck. The levels are still below thresholds for health risk, but highlight the urgent need for munitions clearance to minimize long-term risks.