Hymeniacidon

Hymeniacidon is a genus of sea sponges in the class Demospongiae. Some members of the genus are known to be mobile, achieving speeds of between 1 and 4 mm per day.

Species
The following species are recognised in the genus Hymeniacidon:


 * Hymeniacidon actites (Ristau, 1978)
 * Hymeniacidon addreissiformis Dickinson, 1945
 * Hymeniacidon agminata Ridley, 1884
 * Hymeniacidon assimilis Levinsen, 1887
 * Hymeniacidon atlantica Burton, 1948
 * Hymeniacidon burtoni Van Soest & Hooper, 2020
 * Hymeniacidon caerula Pulitzer-Finali, 1986
 * Hymeniacidon calcifera Row, 1911
 * Hymeniacidon calva (Ridley, 1881)
 * Hymeniacidon centrotyla Hentschel, 1914
 * Hymeniacidon chloris de Laubenfels, 1950
 * Hymeniacidon conica (Kirk, 1909)
 * Hymeniacidon corticata (Thiele, 1905)
 * Hymeniacidon digitata (Hansen, 1885)
 * Hymeniacidon dubia Burton, 1932
 * Hymeniacidon dystacta de Laubenfels, 1954
 * Hymeniacidon fallax Bowerbank, 1886
 * Hymeniacidon fasciculata (Fristedt, 1887)
 * Hymeniacidon fernandezi Thiele, 1905
 * Hymeniacidon flaccida Pulitzer-Finali, 1996
 * Hymeniacidon flavia Sim & Lee, 2003
 * Hymeniacidon fristedti (Topsent, 1913)
 * Hymeniacidon glabrata Burton, 1954
 * Hymeniacidon gracilis (Hentschel, 1912)
 * Hymeniacidon halichondroides (Thiele, 1898)
 * Hymeniacidon heliophila Parker, 1910
 * Hymeniacidon hentscheli Fernandez, Bravo-Gómez, Cárdenas & Hajdu, 2020
 * Hymeniacidon iberica (Ferrer-Hernandez, 1914)
 * Hymeniacidon informis (Burton, 1913)
 * Hymeniacidon insutus Koltun, 1964
 * Hymeniacidon kerguelensis Hentschel, 1914
 * Hymeniacidon kitchingi (Burton, 1935)
 * Hymeniacidon longistylus Desqueyroux, 1972
 * Hymeniacidon luxurians (Lieberkuhn, 1859)
 * Hymeniacidon mixta (Sara, 1958)
 * Hymeniacidon ovalae Tanita & Hoshino, 1989
 * Hymeniacidon perlevis (Montagu, 1818) crumb-of-bread sponge
 * Hymeniacidon petrosioides Dendy, 1905
 * Hymeniacidon plumigera Bowerbank, 1874
 * Hymeniacidon proteus (Ridley, 1884)
 * Hymeniacidon racemosa Brondsted, 1924
 * Hymeniacidon reptans (Cuartas, 1991)
 * Hymeniacidon rigida Dendy, 1897
 * Hymeniacidon rubiginosa Thiele, 1905
 * Hymeniacidon rugosa (Schmidt, 1868)
 * Hymeniacidon simplex (Bowerbank, 1866)
 * Hymeniacidon simplicima (Bowerbank, 1874)
 * Hymeniacidon sinapium Laubenfels, 1930
 * Hymeniacidon sphaerodigitata Bergquist, 1970
 * Hymeniacidon stylifera (Stephens, 1915)
 * Hymeniacidon sublittoralis Samaai & Gibbons, 2005
 * Hymeniacidon timonovi (Rezvoi, 1931)
 * Hymeniacidon torquata Topsent, 1916
 * Hymeniacidon ungodon de Laubenfels, 1932
 * Hymeniacidon upaonassu Fortunato, Pérez & Lôbo-Hajdu, 2020
 * Hymeniacidon variospiculata Dendy, 1922
 * Hymeniacidon zosterae Row, 1911