In polyclads, the mouth is positioned mid-ventrally (Fig.1) They have a specialized glandular pharynx that can protrude out when feeding. They have a plicate pharynx (Fig. 2) which is a long, muscular tube that can be retracted into a sheath-like cavity.

As carnivores, they prey on small sized invertebrates such as ascidians and small crustaceans. (Newman et al., 2003) . Flatworms have a preference for ascidians (Fig. 3) and they can glide over the surface of the colony, sucking out multiple zooids (of an ascidian)  at one go.