Clionaidae

Clionaidae is a family of ectoparasitic demosponges which are found worldwide. This group of sponges are well known for boring holes in calcareous material such as mollusc shells and coral skeletons, using both chemical and mechanical processes.

Genera
Genera within this family include:
 * Cervicornia Rützler & Hooper, 2000
 * Cliona Grant, 1826
 * Clionaopsis Rützler, 2002
 * Cliothosa Topsent, 1905
 * Dotona Carter, 1880
 * Pione Gray, 1867
 * Scolopes Sollas, 1888
 * Spheciospongia Marshall, 1892
 * Spiroxya Topsent, 1896
 * Volzia Rosell & Uriz, 1997