What with Fukashima and the dying Oceans ... are cans of Tuna, Salmon, etc safe?

Probably cans from before 2011 will be OK, but those are prolly getting close to expiring

No, at least Pacific caught and west coast/Alaska farm fish.
I still buy Atlantic and S Atlantic caught fish but not much longer, stock up now!

Forget the radiation.

If you consider the mercury levels in most of these canned fish you should only eat them once a week or so.

If you stick to that, the radiation isn't going to hurt you, if there is any (that's another matter)

Get or build a Geiger counter if you're super scared.

My plan?

Pray over the fish in thanksgiving and ask it to be blessed, that it be healthy and good for the body in the name of Jesus Christ.

Apply faith, and if God takes you, all the better to go home.

Thanks for all your responses.

So, basically, there is no way to know the source of these canned sea foods (Pacific or Atlantic oceans)?

As a result, stock up now in order to hopefully get the least contaminated foods possible.