In this article we will discuss about the structure of Sycon with the help of a diagram.
1. It is a marine, colonial and hermaphrodite sponge which is found attached to rocks near sea shore in shallow waters.
2. Each sponge is a vase-like cylinder perforated with numerous ostia all over and a large osculum at the apex.
3. Osculum is surrounded with a fringe of monaxon spicules.
4. Canal system is of syconoid type.
5. Radial canals are lined with chonanocytes.
6. Skeleton is made up of monaxon, triaxon and tetraxon calcarious spicules.
7. Reproduces asexually and sexually.