Radioactive bluefin tuna crossed the Pacific to US

[suffragette]

34. I wonder what this says about levels in smaller fish, squid etc eaten there and along the journey

Fisher seems surprised mainly that the radiation was retained:

From the article in OP:
Bluefin tuna absorbed radioactive cesium from swimming in contaminated waters and feeding on contaminated prey such as krill and squid, the scientists said. As the predators made the journey east, they shed some of the radiation through metabolism and as they grew larger. Even so, they weren't able to completely flush out all the contamination from their system.

"That's a big ocean. To swim across it and still retain these radionuclides is pretty amazing," Fisher said.




Fisher was already aware of radiation in fish found in Japanese testing.

Here's some info on that in a Canadian article:

http://webcache.googleusercontent.com/search?client=safari&rls=en&q=cache:ixccf6OW04AJ:http://www.vancouversun.com/news/After%2BFukushima%2Bfish%2Btales/5994237/story.html%2BJapan+exported+%2476+million+of+food+products+to+Canada+in+2010&oe=UTF-8&hl=en&ct=clnk

In November, 18 per cent of cod exceeded a new radiation ceiling for food to be implemented in Japan in April – along with 21 per cent of eel, 22 per cent of sole and 33 per cent of seaweed.

Overall, one in five of the 1,100 catches tested in November exceeded the new ceiling of 100 becquerels per kilogram. (Canada’s ceiling for radiation in food is much higher: 1,000 becquerels per kilo.)

“I would probably be hesitant to eat a lot of those fish,” said Nicholas Fisher, a marine sciences professor at the State University of New York at Stony Brook.

Fisher is researching how radiation from Fukushima is affecting the Pacific fishery. “There has been virtually zero monitoring and research on this,” he said, calling on other governments to do more radiation tests on the ocean’s marine life.




Glad he is conducting and calling for more testing.