Over a hundred years after the loss of a German submarine in the North Sea, science has discovered that its impact on the marine ecosystem is felt even now. The German submarine UC-30 was lost in April 1917 due to an explosion of a British mine near Rømø, Denmark, leaving 27 people dead. The wreck had lain hidden in the depths of the North Sea for close to a century until recently when scientists identified TNT contamination from the wreck in the water, sediment, and marine organisms. The discovery is just another example of the less-known side effect of the two world wars, namely the presence of thousands of sunken ships and weapons which are rusting away under the water.
