I think the best we can do is try to get on record every perspective possible and then each use our reasoning to make our own conclusions.
John Friend, since he lives in San Diego and that is where Scripps Institutue of Oceanography - UC San Diego is, ought to try to get one of their marine sciences professors on his show to get their mainstream academia perspective on Fukushima Pacific impacts. John ought to have a powerful set of questions for the professor and at least get that take on record.
If nothing else, if will show us how marine sciences officialdom has an "official story" that is far far different that most of the stories we see on rense.com.
One thing I can say for sure, when you get these academic experts trying to give us clear information on a politically hot topic like this, we will all get treated to usual inconclusive tap dancing and bovine excrement.