Tuna caught near California still have traces of Fukushima radiation
http://rt.com/usa/tuna-fukushima-radiation-238/
Almost two years after a natural disaster ravaged a Japanese nuclear plant, Bluefin tuna that test positive for radiation poisoning continue to be caught off the coast of California.
Twenty-three months after a tsunami took the Fukushima power plant offline and triggered an international emergency, the effects of the disaster are still being felt thousands of miles apart. This week writer Monte Burke of Forbes draws attention to a new study that shows the lingering damages caused nearly two years ago.
Burke says that a new study from Daniel J. Madigan of Stanford University’s Hopkins Marine Station suggests that even waters in the East Pacific aren’t safe from the radiation. Bluefin off the coast of Japan are still showing signs of contamination almost two years after the incident, and migration patterns suggest that fish floundering near the other side of the ocean will continue to show evidence of radiation. And because relatively young Bluefin may have spent the majority of their lives in radioactive ocean waters near Japan, even infant fish are testing positive for radiation all this time later.
= new reply since forum marked as read
deformed sea creatures in the Gulf, radioactive sea creatures in the Pacific.
Please, let humankind WTFU regarding what we are doing to the life support systems of our planet. The 'environment' is not just pretty scenery for the privileged to jog through. Earth is our only home.
Just, wow. 
That's when I'll buy canned tuna again.
Of the ones that were identifiably recent arrivals from Japan, the average Fukushima cesium contamination was about 2 Bq/kg.
The average fish in the study had about 400 Bq/kg of Potassium 40.
Interestingly enough... the fish that were not recent arrivals (with no Fukushima radiation), had K40 levels in the 500-700 Bq/kg range.
So by avoiding the Fukushima-contaminated fish... you would be increasing your radiation dose. 
Both cesium and potassium are beta emitters.
So the obvious questions is - Given that tuna normally has beta radiation of between 300-700 Bq/kg... why do you really care about an additional 2 Bq when you don't know whether the one you're eating was on the high or low end of an entirely natural range?
The anti-nukes can't pretend that this ignorant position isn't really something that many of them believe as long as you're around. Who needs a straw man when you're willing to adopt those positions?
"manmade" radiation is no more or less dangerous than the same type of radiation from a "natural" source.
Most isotopes emit more than one type of radiation when they decay, and of course so doing change into another isotope, which will emit more radiation when it in turn decays
Cesium 134 decays to Xenon 134 - which is not radioactive.
Cesium 137 does make a quick stop to Barium 137m, but that's gone within minutes and you're left with stable Barium 137.
Potassium is actually more likely to decay by more than one path - but both are stable daughters.
So once again... there are three elements involved and all are beta emitters. That natural one found in all tuna emitts hundreds of times the amount of radiation that the cesium does. Go ahead and tell us again why that's still dangerous because out bodies aren't adapted for the manmade stuff. I need the laugh.
Neither is particularly long or short (one is about 2.5 years and the other is about 30 years)
So like you say they decay and keep emitting.
Like I say? I wouldn't be so ignorant to pretend that when something decays to stability that it "keeps emitting".
And in that decay there are now 2 different kinds of emitters emitting radiation in your body and for how long.
There are lots of them emitting inside your body. But your body can't tell the difference between a beta ray from one or another. If you eat a serving of this tuna you'll have 400,000-600,000 beta disintigrations in your body in the first hour. One or two thousand of them will be from the Cesium (only some of which is from Fukushima). Which can you happen to pick off the shelf could make 100-times the difference as whether or not it swam near Japan.
24 hours a day, 7 days a week this un-natural man made radiation that our bodies are not adapted to
Always reliable in doubling-down on the tinfoil hatery. Your body had better be adapted to it... since it's been there since you were born.
And you laugh at it.
Oh heavens... I hope I didn't give you that impression.
I was laughing at you.
