On: Japan's ocean radiation hits 7.5 million times legal limit

http://www.houshasen-pref-ibaraki.jp/present/result01.html

This is a site with real-time radiation levels . The readings from this, and several other sites, have been verified as accurate.

I see a disaster, but not a coverup.

edit: http://www.city.yokohama.lg.jp/kankyo/saigai/ is the radiation report from Yokohama.