Trash in sea bottom

The sea bottoms are increasingly covered with trash. And much of it is just thrown by people on boats or ships. This kind “there isn’t any contamination, since we cannot see it” attitude s very dangerous. Using it, the compounds for chemical warfare have been dumped in sea bottoms in barrels, which are now rusting and starting to leak. It is possible that some of the unexplained mass deaths of marine animals have been caused by dumped, now leaking poisons planned to be used in chemical warfare. The exact locations in, e.g., Baltic Sea are poorly known, as quite a lot probably was dumped from Soviet Union, where transparency in such things was not important. The problems with trash in sea bottom is that sea currents such as the Golf stream can move the objects far from where they have initially been thrown away. So, it is good that one only sees the beautiful sea scenery, and not the trashy bottom.