This is an older post but I think it's worth a re-post:

Title: Tuna carrying radio active material across Pacific
Source: ABC Australia, Pacific Beat
Author: Wayne Shields
Date: July 15, 2012

Dan Madigan, Stanford University: [...] so in 2011, the fish we measured — because we didn’t know what we’d see and we weren’t really convinced we’d see anything — we only measured 15 fish, and what was amazing was that we found it in all 15 bluefin tuna that we looked at. These were known from their size to be migrants from Japan, so they had only by the nature of when we sampled them and how long it takes them to cross the Pacific, we know they’d only been in the water around Japan for at most two months, probably less, maybe less than a month. So our big simple question was what will bluefin look like that migrate over this year that have spent their entire life from egg stage growing up in the waters off Japan? The concentrations of radioactivity had decreased, but the amount of time the animals have to spend in that water before they make their long migrations has increased. So we really don’t know what to expect. And there’s many other species that use those waters off Japan and migrate long distances, and as of now none of them have been looked at, and again people really want to know what species are carrying this radioactivity and which aren’t, and that’s what we’re trying to do.

[...]

There’s a relatively new, I think it’s somewhere in the range of one to two years old, funding site called petri dish, so that petridish.org, and we actually just launched our project on that site. And it’s a really cool idea what they’ve done. Their idea is instead of applying to grant agencies in the traditional fashion, it allows the public to go on this website, check our scientific projects, find one that interests them and contribute. And we really found after our first study we were overwhelmed by the public response, and it was clear that people want to know more about what’s going on and this is a chance for them to put a contribution of their choice, a small or a larger contribution towards figuring that out and doing a solid comprehensive study of lots of different species. So that’s what we’re doing and Petri Dish reached out to us and we just launched our project on there, so I’m encouraging anyone who’s interested in this story to go on that site. And we really want people to focus on and let us know the animals that they are interested in; whether it be ones they eat or ones they just like, so it could be sea turtles or whales, because you really like sea turtles or whales. Or it could be albacore because you eat a lot of albacore, it’s really up to you. And the nice thing is that the people who contribute are kept up to date with the work, they’re basically already directly taking part in the work and depending on how much you contribute you get something from the researchers, whether it be a thank you letter from all the researchers, other forms of swag like t-shirts, framed photographs of your study animal of choice, there’s kind of a wide variety there and you can check that all out on the site too.
Learn more here: http://www.petridish.org/projects/fukushima-trips-transport-of-radi...