There are other reasons to worry about the Pacific bluefin, such as overfishing and mercury contamination.

CNN: Fukushima tuna study finds minuscule health risks

Mercury contamination at Minamata, for example, caused terrible nerve damage among residents during the 1970s.

CNN: The War Mangas

And Yili issued a recall of its formula due to high mercury contamination.

FORBES: Chinese Mothers Risk Arrest For Buying Safe Baby Formula

Burning coal is the single greatest cause of mercury contamination in the environment.

FORBES: Maine Wind Project Wins $102 Million U.S. Loan Guarantee

In large doses, mercury contamination can affect the health and populations of fish and wildlife, as it harms their central nervous and reproductive systems.

FORBES: Coal Plants Belching Out Less Mercury