These “worms” are a parasite named anisakid nematodes, sometimes referred to as herring worms or cod worms ... Control suggests 75 percent of wild Pacific salmon are infected with the parasite.” ...

Similar worms are routinely found in freshwater species as well. According to the story, 75 percent of wild Pacific salmon are infected with them, but they’re certainly not confined to the West Coast.

The parasites, anisakid nematodes, sometimes called herring worms or cod worms, are among the most ... Control suggests 75 per cent of wild Pacific salmon are infected with the parasite.