Whales are specially sensitive to environmental contaminants, along with organochlorine-like polychlorinated biphenyls (PCBs), dichlorodiphenyltrichloroethane (DDT) and dioxins- and heavy metals, which include methylmercury. Each of those environmental contaminants accumulates within the bodies of apex predators inclusive of sperm whales, orcas, pilot whales and false killer whales. Most contaminated whale meat has come from species that consume fish or mammals together with dolphins, porpoises, sperm whales and