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.Brusca, R.C. & Brusca, G.J. 2002. Invertebrates Second Edition Sinauer Associates. Hooper J.N & van Soest R.W.M.(eds). 2002. Systema Porifera: A Guide to the Classification of Sponges Kluwer Academic/Plenum Publishers, New York
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
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