28 May 2012 Updated at 22:45 ET
Bluefin tuna record Fukushima radioactivity
Jonathan Amos
Science correspondent, BBC News
Pacific Bluefin tuna are among the great marine travellers
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Pacific Bluefin tuna caught off the coast of California have been found to have radioactive contamination from last year's Fukushima nuclear accident.
link-
http://www.bbc.co.uk/news/science-environment-18239107