That article is complete BS. They claim all sorts of sources, but don't actually cite them (or the links go to other conspiracy theorist sites, not any government/science sites).
For people wondering about radiation levels, this is a good chart to give a sense of scale:
http://xkcd.com/radiation/
Not that I believe
these numbers either, but they claim that a fish was caught RIGHT NEXT TO the plant that had radiation of 740k Bq/kg. For comparison, eating that fish is about the same as eating 5,000 bananas. So a lot, yes, but not exactly lethal. And that is right next to the plant. Another way of looking at that: it would give you about the same amount of radiation as getting 2 mammograms. Also, it is still less than the recommended yearly limit for radiation.
I can't to find exact measurements off the US coast right now, but it is a safe bet that they are still WELL within background limits.
Is the radiation a problem? Somewhat. But it is being managed and mitigated. That article is simply trying to freak people out to get page views (which means ad money).
In the future, a quick way to tell when an article is BS: if the first sentence is "You’re going to want to use every share button at the bottom of this article...", just stop reading.