P-20 BORING SPONGE, Cliona celata

A bright yellow, corn-cob shaped sponge that exhibits pumping of water through prominent osculum. In juvenile stages, the Cliona sponge hollows out a system of cavities and canals in the dead shell, removing small fragments of material with amebocytes. Adult Cliona provides shelter for other aquarium animals and makes a striking focal point. They are also known as “Sulphur sponge.” Size: 9-12 cm.