food ingestion involves expansion of the pharynx through contraction of radial contractile tissues in the complete mesenteries (note the expanded diameter of the individual featured in the drawings below Right). 30min after ingestion the anemone resumes its feeding posture, often with the column base partially constricted (see drawing). 6h after exposure to a food-extract stimulus, an anemone may sway around seemingly in search for the food. An upwards peristaltic contraction of the column leads to egestion of food residues. Shrivelled, or fully contracted, individuals are often seen, although the stimulus that causes this is not well known