The director of the Clean Baltic Fund, Arnold Pork, claims that half a million tonnes of chemical weapons were dumped into the sea after World War II. The chemical weapons are allegedly located east of the Helsinki-Tallinn line, in waters that belonged to the former Soviet Union.
The Clean Baltic Fund, which has collected data about the Baltic for the last 16 years, says that the Soviet Union immediately began dumping chemical weapons that it seized from Germany, but that the dumping continued well into the 1970's.
Finland investigated the possibility of chemical weapons on the seabed when Nordstream applied for permission to build a massive underwater natural gas pipeline connecting Russia to Germany via Finland. The Ministry of Environment says no chemical weapons were found.
Pork says that Nordstream intentionally avoided energy rows and arguments over the chemical weapons with Baltic countries by applying for construction permission from the Nordic countries.