From the Japanese Ministry of Agriculture and Fisheries press page you can find the latest sampling of radioactivity in fish
The Japanese ministry of culture, education, sports, science and technology posts the level of radioactivity at monitoring stations 30km offshore
- The Iinternational Atomic Energy Agency at Monaco posts a regular powerpoint presentstion summarising the Japanese data
- analysis of Japanese measurements 30km from shore shows that activity is below detection threshold for most instruments but that those that do show some activity show relatively high levels
CNRS Toulouse have run simulations that attempt to show how the radionuclides emitted in the sea and deposited from atmosphere would circulate in the Pacific. They urge caution in using these results.