Yes fish bioaccumulate heavy metals (mainly mercury) particularly tuna, still Much (an estimated 40%) of the mercury that eventually finds its way into fish or

Yes fish bioaccumulate heavy metals (mainly mercury) particularly tuna, still Much (an estimated 40%) of the mercury that eventually finds its way into fish originates with coal-burning power plants and chlorine production plants. https://en.wikipedia.org/wiki/Mercury_in_fish https://en.wikipedia.org/wiki/Mercury_in_fish