For the Irish mythology character, see 
Clíodhna.
| Cliona | 
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| Cliona celeta | 
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| Scientific classification | 
| Domain: | Eukaryota | 
 
| Kingdom: | Animalia | 
 
| Phylum: | Porifera | 
 
| Class: | Demospongiae | 
 
| Order: | Clionaida | 
 
| Family: | Clionaidae | 
 
| Genus: | Cliona Grant, 1826
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| Species | 
| See text | 
| Synonyms | 
| List  
Anthosigmella Topsent, 1918Bernatia Rosell & Uriz, 1997Delaubenfelsia Dickinson, 1945Euryphylle Duchassaing & Michelotti, 1864Idomon Gray, 1867Osculina Schmidt, 1868Papillella Vosmaer, 1885Papillina Schmidt, 1862Poterion Schlegel, 1858Pronax Gray, 1867Raphyrus Bowerbank, 1862Rhaphiophora Gray, 1867Rhaphyrus Bowerbank, 1864Sapline Gray, 1867Spongia (Poterion) Schlegel, 1858Taguilla Bowerbank, 1874Tapiliata Bowerbank, 1874Vioa Nardo, 1839
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Cliona is a genus of demosponges in the family Clionaidae. It contains about eighty described species.