Greenpeace Japan has been monitoring radiation levels in sea food for the past several months.  They say Pacific cod and tuna are proving to be very susceptible to cesium contamination.

The Fukushima Daiichi nuclear plant is not only spewing radiation into the air, but pouring it into the Pacific Ocean.

Greenpeace Japan tested seafood in just five supermarkets in Japan, from October through the beginning of November.  Out of 75 samples, 27 were positive for radioactive cesium 134 and 137.

They found that Pacific cod was the most contaminated, along with Bigeye and Skipjack tuna.  The fish had been caught off the coasts of Hokkaido, Iwate and Miyagi.  These are areas directly affected by the radiation pouring into the Pacific Ocean.

The researchers discovered that canned fish could potentially be more contaminated, because in Japan regulations for canned fish are less strict than fresh fish.  Greenpeace Japan says they did find a small level of radiation in a can of mackerel.