# Tethya

Tethya is a genus of sea sponges belonging to the family Tethyidae. Members of this genus all have a spherical body form and some are known to be able to move at speeds of between 1 and 4 mm per day.

## Species

The following species are recognised in the genus Tethya:
* Tethya actinia de Laubenfels, 1950
* Tethya acuta Sarà & Sarà, 2004
* Tethya amplexa Bergquist & Kelly-Borges, 1991
* Tethya andamanensis Dendy & Burton, 1926
* Tethya asbestella Lamarck, 1815
* Tethya aurantium (Pallas, 1766)
* Tethya beatrizae Ribeiro & Muricy, 2011
* Tethya bergquistae Hooper, 1994
* Tethya bitylastra Mácola & Menegola, 2018
* Tethya boeroi Sarà, 1992
* Tethya brasiliana Ribeiro & Muricy, 2004
* Tethya bullae Bergquist & Kelly-Borges, 1991
* Tethya burtoni Sarà & Sarà, 2004
* Tethya californiana de Laubenfels, 1932
* Tethya citrina Sarà & Melone, 1965
* Tethya coccinea Bergquist & Kelly-Borges, 1991
* Tethya communis Bergquist & Kelly-Borges, 1991
* Tethya comorensis Sarà, Corriero & Bavestrello, 1993
* Tethya compacta Bergquist, 1961
* Tethya cyanae Ribeiro & Muricy, 2004
* Tethya deformis Thiele, 1898
* Tethya dendyi Sarà & Sarà, 2004
* Tethya densa Sarà, 1992
* Tethya diploderma Schmidt, 1870
* Tethya ensis Sarà, Gómez & Sarà, 2001
* Tethya expansa Sarà & Sarà, 2004
* Tethya fastigiata Bergquist & Kelly-Borges, 1991
* Tethya fissurata Lendenfeld, 1888
* Tethya flexuosa Sarà & Sarà, 2004
* Tethya gigantea (Lendenfeld, 1888)
* Tethya globostellata Lendenfeld, 1897
* Tethya globum Duchassaing & Michelotti, 1864
* Tethya gracilis Sarà, Sarà, Nickel & Brümmer, 2001
* Tethya gunni Sarà & Sarà, 2004
* Tethya hibernica Heim, Nickel, Picton & Brümmer, 2007
* Tethya hooperi Sarà & Sarà, 2004
* Tethya ignis Ribeiro & Muricy, 2004
* Tethya ingalli Bowerbank, 1858
* Tethya irisae Sorokin, Ekins, Yang & Cárdenas, 2019
* Tethya irregularis Sarà & Bavestrello, 1998
* Tethya japonica Sollas, 1888
* Tethya laevis (Lendenfeld, 1888)
* Tethya levii Sarà, 1988
* Tethya leysae Heim & Nickel, 2010
* †Tethya logani Dawson, 1857
* Tethya magna Kirkpatrick, 1903
* Tethya maza Selenka, 1879
* Tethya melinka Hajdu, Desqueyroux-Faúndez, Carvalho, Lôbo-Hajdu & Willenz, 2013
* Tethya meloni Corriero, Gadaleta & Bavestrello, 2015
* Tethya mexicana Sarà, Gómez & Sarà, 2001
* Tethya microstella Sarà, 1990
* Tethya minuta Sarà, Sarà, Nickel & Brümmer, 2001
* Tethya monstrosa (Burton, 1924)
* Tethya mortoni Bergquist & Kelly-Borges, 1991
* Tethya multifida (Carter, 1882)
* Tethya multistella Lendenfeld, 1888
* Tethya nicolae Ribeiro & Muricy, 2011
* Tethya norvegica Bowerbank, 1872
* Tethya novaecaledoniae Sarà, 1988
* Tethya nux (Selenka, 1867)
* Tethya omanensis Sarà & Bavestrello, 1995
* Tethya ornata Sarà, Bavestrello & Calcinai, 2000
* Tethya orphei Sarà, 1990
* Tethya ovum Sarà, Gómez & Sarà, 2001
* Tethya papillosa (Thiele, 1905)
* Tethya paroxeata Sarà, Gómez & Sarà, 2001
* Tethya parvistella (Baer, 1906)
* Tethya parvula Ribeiro & Muricy, 2011
* Tethya pellis Bergquist & Kelly-Borges, 1991
* Tethya peracuata (Topsent, 1918)
* Tethya popae Bergquist & Kelly-Borges, 1991
* Tethya pulchra Sarà, 1992
* Tethya pulitzeri Sarà & Sarà, 2004
* Tethya robusta (Bowerbank, 1873)
* Tethya rubra Samaai & Gibbons, 2005
* Tethya samaaii Ribeiro & Muricy, 2011
* Tethya sarai Desqueyroux-Faúndez & van Soest, 1997
* Tethya seychellensis (Wright, 1881)
* Tethya simi Sarà, Bavestrello & Calcinai, 2000
* Tethya socius Sarà, Gómez & Sarà, 2001
* Tethya solangeae Ribeiro & Muricy, 2011
* Tethya sollasi Bergquist & Kelly-Borges, 1991
* Tethya songakensis Kim & Sim, 2005
* Tethya stellagrandis (Dendy, 1916)
* Tethya stellodermis Sarà & Sarà, 2004
* Tethya stolonifera Bergquist & Kelly-Borges, 1991
* Tethya strongylata Sarà, Bavestrello & Calcinai, 2000
* Tethya taboga (de Laubenfels, 1936)
* Tethya tasmaniae Sarà & Sarà, 2004
* Tethya tenuisclera Sarà & Corriero, 1994
* Tethya topsenti Sarà, Bavestrello & Calcinai, 2000
* Tethya uljinensis Shim & Sim, 2008
* Tethya vacua Austin, Ott, Reiswig, Romagosa & McDaniel, 2014
* Tethya varians Sarà & Bavestrello, 1998
* Tethya viridis (Baer, 1906)
* Tethya wilhelma Sarà, Sarà, Nickel & Brümmer, 2001