I saw the quite high radiation readings from fish near Japan, and of import bans on seafoods from Japan.....but why are they not talking about how far fish range? The tuna is extremely fast swimmer, 40+ MPH, and swims *far*, at Dalhousie U. in Nova Scotia they put a tracker on a bluefin and found it went back and forth between the west coast and asia (to japan, for real!) 3 times in 20 months, 25,000 miles.