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Ocean Bombs: Wrecks Poisoning Marine Life
20 Sep
Summary
- TNT is leaking from aging submarine wrecks into the sea.
- Mussels exposed to wrecks showed oxidative stress and disruption.
- Millions of tons of munitions litter seabed, posing an ongoing threat.
Explosives from wartime wrecks are actively polluting the ocean, impacting marine ecosystems. A study confirmed that TNT is escaping from submarine wrecks, with compounds like 4-ADNT and 2-ADNT also being released as the explosives degrade. Scientists observed oxidative stress and metabolic disruption in mussels placed near these wrecks, indicating negative environmental consequences.
The SM UC-30 submarine wreck, in particular, showed high concentrations of these harmful substances due to direct seawater contact and heavy corrosion. While current pollution is believed to be localized, it is expected to worsen as wrecks deteriorate further. This issue is widespread, with an estimated 1.6 million tons of conventional munitions from World Wars I and II lying in German waters alone.
Addressing this threat is challenging; recovering or detonating the explosives is hazardous and costly. The findings underscore the persistent environmental damage from warfare, with submerged munitions continuing to contaminate marine life over a century after hostilities ceased. The study was published in Marine Pollution Bulletin.
