Radioactive cesium from Fukushima found in tuna caught off U.S.
Trace amounts of radioactive cesium released from Japan's crippled Fukushima Daiichi nuclear power plant have been found in bluefin tuna caught off the western coast of the United States, according to a study in the Proceedings of the National Academy of Sciences published online Monday.

While the amounts are not considered a health hazard, the detection reflects the magnitude of the nuclear disaster, which resulted in the release of massive amounts of radioactive materials into the atmosphere and sea.
[link to english.kyodonews.jp]
.