Sunken WWI sub is leaking TNT into the North Sea
A World War I submarine that sank nearly 110 years ago has been leaking explosive pollutants into the North Sea for decades. What’s more, ocean researchers say the problem may worsen over time—not only near the German vessel itself, but at thousands of similar shipwrecks. On April 19, 1917, Germany’s UC-30 submarine was attempting to return home due to engine problems when it struck a British mine near the Danish island of Rømø. All 27 crew members perished, and the sub remained missing until its rediscovery almost a century later in 2016. As part of the North Sea Wrecks research project, marine ecologists recently collaborated with Danish navy divers to visit the UC-30’s remains. There, they collected water and sediment samples as well as mussels and starfish specimens that lived near the vessel’s remains. Subsequent laboratory analysis showed that traces of TNT are filtering into the surroundings from at least some of the submarine’s six torpedoes and 18 mines. The residual toxins aren’t concentrated in one specific area, either. “We found traces of TNT in …









