On Tuesday
the Japanese government said it expected it would have to look at the
international monitoring of radioactive fish products following the
discovery of a tainted tuna caught off the coast of southern California,
but first needed more information.
Low levels of nuclear radiation from the
tsunami-damaged Fukushima power plant have turned up in bluefin tuna off
the California coast, suggesting that these fish carried radioactive
compounds across the Pacific Ocean faster than wind or water can.
Scientists reported on Monday small amounts of cesium-137 and cesium-134
were detected in 15 tuna caught near San Diego in August 2011, about
four months after these chemicals were released into the water off
Japan's east coast.
Japan's chief cabinet secretary said the government
still needs more information on this issue. Japan said it will continue
to research and monitor the effects of the radioactive material released
into the ocean around Fukushima since the March 11, 2011 tsunami
crippled and caused a meltdown at the reactors owned by Tokyo Electric
Company.
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Most of the radiation was released over a few days in
April 2011, and unlike some other compounds, radioactive cesium does
not quickly sink to the sea bottom but remains dispersed in the water
column, from the surface to the ocean floor.
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