A whale's body is likely to be polluted due to bioaccumulation. It eats tons of fish, shrimp, larvae, plankton, crabs, krill, fish, and so on, and each tasy morsel likely has some PCBs and PDBE in its body. The more a whale eats, the more PCBs and PDBEs build up in its body. And because PCBs are fat-soluble, blubbery whales have even more room for storing these chemicals than most creatures do. By the time the time a whale dies and an amphipod eats it, that cetacean has become a veritable PCB buffet.