Fish catches, off the coast lines of Fukushima, Miyagi and Iwate Prefectures, is down 70%.  That’s from the beginning of April 2011 to the beginning of October 2011, compared to the same time last year.

Those three prefectures are the main fishing grounds for the local Japanese fishing industry.

The reasons are a combination of tsunami damage to ports (especially Miyagi, which was literally wiped out), and radiation contamination caused by Fukushima Daiichi nuclear power plant.  Most fishermen had voluntarily stopped fishing over radiation concerns, but some continued to fish, only to find out a lot of their catch was contaminated after it arrived at fish markets.

Contrary to the reassuring statements on the U.S. FDA website, there is no standardized Japanese government testing of fish (or any food product) for radiation contamination. Most contamination was (and still is being) found by private citizens groups, or local governments who acted on their own volition.