I worry more about the stuff we don't know about that washed away. Things are washing up onto the West Coast now. Motorcycles, cars, trucks, whole chunks of docks. Our Son and his family live outside of Tacoma Wash. He said there are "thousands" of barrels floating onto the Coast, with no way of knowing what's in them.
Still, I don't think it's as bad as the Mercury Time Bomb the Nazis left us on the Ocean floor. There are several thousand tons of refined weapons grade mercury, sitting in the holds of WWII era German subs. We know the locations of only 2-3 of these. The subs were taking the Mercury to Japan. Mercury is needed to produce explosives, Japan had no reliable source.
Official accounts stress these shipments only occurred late in the war. Nazi records indicate they were going on as early as 1943.
The problem is, the Japanese records of what actually made it to Japan were never found. In 43 and 44 U Boats were being sunk all over the North and South Atlantic, who knows how many were headed for Japan.
Mercury contamination of Seafood wasn't spoken of until the Late 50's early 60's and then it was blamed on industrial pollution. At that time it was accepted. However to some, it seemed too much, too quickly to be coming from landfill runoff etc.
Norway has one of the sites just 60 miles off their coast. 60 tons of Mercury, sitting in a rusting sub. How many more? And where are they?
Here on the East Coast, there have long been warnings about eating too much seafood. Esp. pregnant women. Bluefish seem to have the highest levels. There are doctors who say to limit eating Bluefish, others tell us not to eat it at all.
If the worlds largest single source of nutrients becomes inedible, then what?