Xenia (coral)

Xenia is a genus of photosynthetic soft marine coral in the family Xeniidae. They resemble a mushroom, with "arms" coming out from the top that ends in many-fingered "hands". It is unique among corals because of its ability to use its "hands" to "pulse" or push water away from the colony in a constant, grabbing motion. Common names include fast-pulse Xenia. Species of Xenia are sometimes referred to as pulse corals.

Species
The World Register of Marine Species lists the following species:
 * Xenia actuosa Verseveldt & Tursch, 1979
 * Xenia amparoi Roxas, 1933
 * Xenia antarctica Kükenthal, 1902
 * Xenia bauiana May, 1899
 * Xenia crassa Schenk, 1896
 * Xenia crispitentaculata Verseveldt, 1977
 * Xenia cylindrica Roxas, 1933
 * Xenia danae Verrill, 1869
 * Xenia dayi Tixier-Durivault, 1959
 * Xenia delicata Roxas, 1933
 * Xenia depressa Kükenthal, 1909
 * Xenia distorta Tixier-Durivault, 1966
 * Xenia elongata Dana, 1846
 * Xenia fimbriata Utinomi, 1955
 * Xenia fisheri Roxas, 1933
 * Xenia flava Roxas, 1933
 * Xenia florida (Lesson, 1826)
 * Xenia fusca Schenk, 1896
 * Xenia garciae Bourne, 1894
 * Xenia grasshoffi Verseveldt, 1974
 * Xenia hicksoni Ashworth, 1899
 * Xenia humilis Verseveldt, 1977
 * Xenia intermedia Roxas, 1933
 * Xenia kukenthali Roxas, 1933
 * Xenia kusimotoensis Utinomi, 1955
 * Xenia lepida Verseveldt, 1971
 * Xenia lillieae Roxas, 1933
 * Xenia medusoides May, 1899
 * Xenia membranacea Schenk, 1896
 * Xenia mucosa Verseveldt & Tursch, 1979
 * Xenia multipinnata (Tixier-Durivault, 1966)
 * Xenia multispiculata Kükenthal, 1909
 * Xenia nana Hickson, 1930
 * Xenia novaebritanniae Ashworth, 1900
 * Xenia novaecaledoniae Verseveldt, 1974
 * Xenia plicata Schenk, 1896
 * Xenia puertogalerae Roxas, 1933
 * Xenia pulsitans Kent, 1893
 * Xenia quinqueserta May, 1899
 * Xenia rubens Schenk, 1896
 * Xenia samoensis Kölliker
 * Xenia sansibariana May, 1899
 * Xenia schenki Roxas, 1933
 * Xenia sexseriata Verseveldt, 1977
 * Xenia spicata Li, 1982
 * Xenia stellifera Verseveldt, 1977
 * Xenia ternatana Schenk, 1896
 * Xenia tripartita Roxas, 1933
 * Xenia tumbatuana May, 1898
 * Xenia umbellata Lamarck, 1816
 * Xenia viridis Schenk, 1896
 * Xenia viridus Schenk, 1896