Bugula Invertebrate Anatomy Bugula spp. Gymnolaemata, O.Cheilostomata, sO.Anasaca, Div.
Bryozoans are suspension feeding, sessile, marine or freshwater organisms.
Individuals are usually less than 1 mm in length but almost always occur in colonies, which may be many centimeters in diameter. The mouth and anus are at the anterior end and are connected by a U-shaped gut. The feeding apparatus is a ring of ciliated tentacles known as a lophophore. The mouth is surrounded by the ring but the anus is outside it on the dorsal side. There is a well developed exoskeleton and a reduced body wall.