Peicellariae (sing. pedicellaria) are commonly found on Echinoderms, particularly of the class Asteroidea. They serve to keep the body surface clear of encrusting organisms, though some pedicellariae aid in food capture. Each pedicellaria is typically composed of three forceps-like extensions which can pinch or cut off settling larvae. Pedicellariae are normally present around the base of a spine. They are often referred to as specialized jaw-like appendages, used for protection of the papulae.