Andrew David

Parasites do very well for themselves, which is why they are so common in the animal kingdom. Geoffrey Read, CC BYIf you’re an oyster lover, seeing a shaggy worm slither across your appetizer is revolting – even though such worms are harmless to people. An internet search using the keywords “oyster” and “worm” will bring up a large cache of images, each one less palatable than the next. As a biologist, I study invasive species including these mud blister worms. Despite their high gross-out facto