A fringe of tentacles thrusts food into the Cavity.

http://en.wikipedia.org/wiki/Mouth

A fringe of tentacles thrusts food into the cavity and it can gape widely enough to accommodate large prey items. Food passes first into a pharynx and digestion occurs extracellularly in thegastrovascular cavity.Annelids have simple tube-like gets and the possession of an anus allows them to separate the digestion of their foodstuffs from the absorption of the nutrients.