They found worms had increased over time in chum and pink salmon, but not in sockeye or coho. "Seeing their numbers rise over time, as we did with pink and chum salmon, indicates that these ...

An Anisakis worm is seen in a filet of salmon. These parasitic worms can be up to 2 centimeters in length and are found in the flesh of raw and undercooked fish. Disclaimer: AAAS and EurekAlert!