Deluded Scientists Think They Can Reassure the Public on the Fukushima Tuna.

[eppur_se_muova]

4. Then there's this ...

... mercury levels in yellowfin tuna had increased at an annual rate of almost 4 percent from 1998 through 2008. Rising mercury levels in oceans because of pollution from coal-fired power plants and other industrial sources are to blame, the study suggested.
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Even using the current EPA limit, our experts’ analysis of Food and Drug Administration data indicates that a 48-pound child would go over that limit by eating more than 1.4 ounces of albacore per week, which is about one-third of a can. A woman weighing about 140 pounds would exceed it by eating more than 4.5 ounces of albacore weekly.
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http://www.consumerreports.org/cro/magazine/2015/06/too-much-tuna-too-much-mercury/index.htm


For the University of Michigan study on mercury in tuna, researchers reanalyzed data from four other studies that measured total mercury levels in the muscle tissue of yellowfin tuna that were caught in the North Pacific near Hawaii: 111 fish in 1971, 104 fish in 1998 and 14 fish in 2008. They found that concentrations of the toxin in Hawaiian yellowfins did not change between 1971 and 1998, but over the next 10 years, mercury levels shot up at a rate of 3.8 percent or more per year.
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When you eat seafood containing methylmercury—the form found in seafood—more than 95 percent is absorbed into your bloodstream.
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http://www.consumerreports.org/cro/news/2015/02/levels-of-mercury-in-tuna-are-on-the-rise/index.htm


A 2009 study led by researchers at the U.S. Geological Survey and Harvard University found that mercury levels measured in the waters of the northern Pacific Ocean had risen about 30 percent over 20 years. But the Hawaiian yellowfin tuna study is the first to document a consequent increase in mercury levels of open-water fish, according to the study’s authors. Calling for more stringent reductions in mercury emissions, they warned that if mercury continues to be deposited into the ocean at current rates, mercury levels in the North Pacific will double by 2050. “Mercury contamination of ocean fish is a serious global health issue," they concluded.
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the UM paper: http://onlinelibrary.wiley.com/doi/10.1002/etc.2883/abstract (abstract only; full paper behind paywall)

Seems more worth worrying about than does water-soluble cesium.

PS: Albacore is considered the safer tuna to eat.