# Polymastia (sponge)

Polymastia is a genus of sea sponges containing about 30 species. These are small to large encrusting or dome-shaped sponges with a smooth surface having many teat-shaped projections (papillae). In areas of strong wave action, this genus does not grow the teat structures, but instead grows in a corrugated form.

## Species

The following species are recognised:
* Polymastia actinioides Koltun, 1966
* Polymastia affinis Thiele, 1898
* Polymastia agglutinans Ridley & Dendy, 1886
* Polymastia andrica de Laubenfels, 1949
* Polymastia arctica (Merejkowsky, 1878)
* Polymastia atlantica Samaai & Gibbons, 2005
* Polymastia aurantia Kelly-Borges & Bergquist, 1997
* Polymastia azorica Lévi & Vacelet, 1958
* Polymastia bartletti de Laubenfels, 1942
* Polymastia bicolor Carter, 1886
* Polymastia boletiformis (Lamarck, 1815)
* Polymastia bouryesnaultae Samaai & Gibbons, 2005
* Polymastia clavata Burton, 1959
* Polymastia conigera Bowerbank, 1874
* Polymastia corticata Ridley & Dendy, 1886
* Polymastia crassa Carter, 1886
* Polymastia craticia Hallmann, 1912
* Polymastia crocea Kelly-Borges & Bergquist, 1997
* Polymastia dendyi Whitelegge, 1897
* Polymastia disclera Lévi, 1964
* Polymastia echinus Kelly-Borges & Bergquist, 1997
* Polymastia ectofibrosa Boury-Esnault, Pansini & Uriz, 1994
* Polymastia fluegeli Lehnert, Stone & Heimler, 2005
* Polymastia fordei Lehnert & van Soest, 1999
* Polymastia fusca Bergquist, 1961
* Polymastia gemmipara Dendy, 1916
* Polymastia granulosa Brøndsted, 1924
* Polymastia grimaldi (Topsent, 1913)
* Polymastia harmelini Boury-Esnault & Bézac, 2007
* Polymastia hemisphaerica (Sars, 1872)
* Polymastia hirsuta Bergquist, 1968
* Polymastia hispidissima Koltun, 1966
* Polymastia inflata Cabioch, 1968
* Polymastia invaginata Kirkpatrick, 1907
* Polymastia isidis Thiele, 1905
* Polymastia janeirensis (Boury-Esnault, 1973)
* Polymastia koltuni Van Soest & Hooper, 2020
* Polymastia kurilensis Koltun, 1962
* Polymastia laganoides Lambe, 1895
* Polymastia littoralis Stephens, 1915
* Polymastia lorum Kelly-Borges & Bergquist, 1997
* Polymastia maeandria Wilson, 1904
* Polymastia mamillaris (Müller, 1806)
* Polymastia martae Boury-Esnault, Pansini & Uriz, 1994
* Polymastia massilis Carter, 1886
* Polymastia megasclera , 1934
* Polymastia murrayi Burton, 1959
* Polymastia nigra Alcolado, 1984
* Polymastia nivea (Hansen, 1885)
* Polymastia pachymastia de Laubenfels, 1932
* Polymastia pacifica Lambe, 1893
* Polymastia paupera Fristedt, 1887
* Polymastia penicillus (Montagu, 1814)
* Polymastia pepo Kelly-Borges & Bergquist, 1997
* Polymastia piscesae Austin, Ott, Reiswig, Romagosa & McDaniel, 2014
* Polymastia polytylota Vacelet, 1969
* Polymastia radiosa Bowerbank, 1866
* Polymastia rara Koltun, 1966
* Polymastia rubens Kelly-Borges & Bergquist, 1997
* Polymastia simplicissima Thiele, 1898
* Polymastia sola Pulitzer-Finali, 1983
* Polymastia spinula Bowerbank, 1866
* Polymastia svenseni Plotkin, Gerasimova & Rapp, 2018
* Polymastia tenax Pulitzer-Finali, 1986
* Polymastia thielei Koltun, 1964
* Polymastia tissieri (Vacelet, 1961)
* Polymastia toporoki Koltun, 1966
* Polymastia tropicalis Lévi, 1967
* Polymastia tubulifera Dendy, 1922
* Polymastia uberrima (Schmidt, 1870)
* Polymastia umbraculum Kelly-Borges & Bergquist, 1997
* Polymastia varia Verrill, 1907
* Polymastia villosa Desqueyroux-Faúndez & van Soest, 1997
* Polymastia zitteli (Lendenfeld, 1888)