The important aspect of this research, according to the Stanford News, was that:
"The work supports the idea that the Fukushima radioisotopes can be used to reliably determine the previously unknown trans-oceanic movements of juvenile Pacific bluefin tuna. This information could be used to prevent tuna from being overfished."
Would You Like a Side of Hot Seaweed With Your Hot Tuna?
Reporting on the same information, the Two Rivers Tribune in northern California noted:
"On the coast of California, there is a deep sea kelp forest at Corona del Mar that now contains concentrations of radiation that are 250 times higher than levels found in kelp prior to the Japanese nuclear accidents. A research article published in Scientific American reports that radiation accumulated in fish that ate near the kelp". Presently, there is no research as to what is the exact effect on fish and their offspring will be from the increased levels of radiation that are being found".
"The Japanese government has banned both the domestic sale and international export of most fish that are caught off the Fukushima coast. Radiation levels are still rising two years after the nuclear accidents. In January of 2013 the tested levels of cesium were about 2,540 times what is considered safe for human consumption. Strontium levels are 240 times the legal limit."
It's Not a Cover-up If Governments Gather No Useful Information, Is It?
Apparently there is no comprehensive, Fukushima-related radiation testing being carried on by the U.S. Canadian, or other governments whose people are directly affected. Nor is there any international body publicly performing this work.
The Global Monitoring Division of the Earth System Research Laboratory of the National Oceanic & Atmospheric Administration (NOAA) of the U.S. Dept. of Commerce monitors global levels of "carbon dioxide, carbon monoxide, methane, nitrous oxide, surface and stratospheric ozone, halogenated compounds including CFC replacements, hydrocarbons, sulfur gases, aerosols, and solar and infrared radiation."