I am now going to look into how the Japanese ocean current could concievably carry radioactive debris or particals around the Pacific. Don't they say that Washington State and Oregon coastlines are warmed by the Japanese current?

The Northern Pacific surface currents form a clockwise loop which is mostly closed. Deep-water currents form a clockwise loop round the entire Pacific, but it would take decades for contamination to get that far down. Bye-bye to the Northern Pacific tuna and salmon fishery, at least.