Thylacodes sipho

Endemic to Australia, found in all coastal states, more common in the south. The habitat is subtidal exposed reefs and rock platforms. ==Description==

Living in an irregularly coiled shell, up to 70 mm long, with a tube diameter of 4 to 10 mm. The early whorls of the shell are attached to a substrate such as rocks or shells, sometimes in aggregated groups. Feeding is on organic matter, trapped in strings of mucous, there is no operculum. ==References==