This species of tapeworm sounds like I wouldn't want it.(Well not that I would want a tapeworm.) It's called Diphyllobothrium latum, the broad fish tapeworm. This is the largest tapeworm found in humans growing up to 18 m, or 60 feet in length. Usualy traveling through three hosts throughout it's life cycle: - a microscopic freshwater crustacean, Cyclops - a fish that eats the Cyclops. - then a HUMAN! (usualy through Sushi, or sashimi) Every day a single worm may discharge up to 1 million fertilized eggs into it's host's feces.