Researchers have found levels of persistent organic pollutants as much as 36 times higher in the muscle tissue of yellowfin tuna caught in the more industrialized areas of the northeast Pacific Ocean and northeast Atlantic Ocean than in tuna caught in waters of the West Pacific Ocean.

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Researchers have found levels of persistent organic pollutants as much as 36 times higher in the muscle tissue of yellowfin tuna caught in the more industrialized areas of the northeast Pacific Ocean and northeast Atlantic Ocean than in tuna caught in waters of the West Pacific Ocean.