Across the vast Pacific, the mighty bluefin tuna carried radioactive contamination that leaked from Japan's crippled nuclear plant to the shores of the United States 6,000 miles away _ the first time a huge migrating fish has been shown to carry radioactivity such a distance.
"We were frankly kind of startled," said Nicholas Fisher, one of the
researchers reporting the findings online Monday in the Proceedings of
the National Academy of Sciences.
The levels of radioactive cesium were 10 times higher than the amount
measured in tuna off the California coast in previous years. But even
so, that's still far below safe-to-eat limits set by the U.S. and