PtychodactisPtychodactis is a genus of sea anemones. It is the only genus in the monotypic family Ptychodactinidae.SpeciesThere are two species recognized in the genus:Ptychodactis aleutiensis Eash-Loucks, Jewett, Fautin, Hoberg & Chenelot, 2010Ptychodactis patula Appellöf, 1893