Grania

Grania is a genus of marine annelid worms in the class Clitellata. They are found at many depths in sands throughout the world. They are generally about 2 cm in length and mostly colorless or white, though Grania colorata, a recently discovered species found in the Great Barrier Reef, is green.

Species
There are 72 species in the genus Grania which have been identified. They include:
 * Grania acanthochaeta Rota & Erséus, 1996
 * Grania algida Rota & Erséus, 1996
 * Grania alliata Coates & Stacey, 1993
 * Grania americana Kennedy, 1966
 * Grania angustinasus Rota & Erséus, 1996
 * Grania antarctica Rota & Erséus, 1996
 * Grania aquitana Rota & Erseus, 2003
 * Grania ascophora Coates, 1990
 * Grania atlantica Coates & Erséus, 1985
 * Grania bekkouchei Prantoni, De Wit & Erséus, 2016
 * Grania bermudensis Erséus & Lasserre, 1976
 * Grania brasiliensis Prantoni, De Wit & Erséus, 2016
 * Grania breviductus De Wit, Rota & Erséus, 2009
 * Grania bykane Coates, 1990
 * Grania canaria Rota & Erseus, 2003
 * Grania capensis Prantoni, De Wit & Erséus, 2016
 * Grania carchinii Rota & Erséus, 1996
 * Grania carolinensis Prantoni, De Wit & Erséus, 2016
 * Grania cinctura De Wit & Erséus, 2007
 * Grania chilensis Prantoni, De Wit & Erséus, 2016
 * Grania colorata De Wit, Rota & Erséus, 2009
 * Grania conjuncta Coates & Stacey, 1993
 * Grania crassiducta Coates, 1990
 * Grania curta De Wit & Erséus, 2007
 * Grania cryptica Prantoni, De Wit & Erséus, 2016
 * Grania darwinensis  Coates & Stacey, 1997)
 * Grania dolichura Rota & Erséus, 2000
 * Grania ersei Coates, 1990
 * Grania euristila Coates & Stacey, 1997
 * Grania fiscellata De Wit & Erséus, 2007
 * Grania fortunata Rota & Erseus, 2003
 * Grania fustata De Wit & Erséus, 2007
 * Grania galbina De Wit & Erséus, 2007
 * Grania hastula Coates, 1990
 * Grania hinojosai Prantoni, De Wit & Erséus, 2016
 * Grania hirsuticauda Rota & Erséus, 1996
 * Grania homochaeta De Wit, Rota & Erséus, 2009
 * Grania hongkongensis Erséus, 1990
 * Grania hylae Locke & Coates, 1999
 * Grania hyperoadenia Coates, 1990
 * Grania incerta Coates & Erséus, 1980
 * Grania inermis Erséus, 1990
 * Grania integra Coates & Stacey, 1997
 * Grania lasserrei Rota & Erséus, 1997
 * Grania laxarta Locke & Coates, 1999
 * Grania levis Coates, 1985
 * Grania longiducta Erséus & Lasserre, 1976
 * Grania longistyla Coates & Stacey, 1993
 * Grania macrochaeta  Pierantoni, 1901)
 * Grania mangeri  Michaelsen, 1914)
 * Grania maricola Southern, 1913
 * Grania mauretanica Rota & Erseus, 2003
 * Grania mira Locke & Coates, 1998
 * Grania monochaeta  Michaelsen, 1888)
 * Grania monospermatheca Erséus & Lasserre, 1976
 * Grania novacaledonia De Wit & Erséus, 2007
 * Grania ocarina Rota, Erséus & Wang, 2003
 * Grania occulta De Wit & Erséus, 2010
 * Grania ovitheca Erséus, 1977
 * Grania pacifica Shurova, 1979
 * Grania papillata De Wit & Erséus, 2007
 * Grania papillinasus Rota & Erseus, 2003
 * Grania parvitheca Erséus, 1980
 * Grania paucispina  Eisen, 1904)
 * Grania postclitellochaeta  Knöllner, 1935)
 * Grania principissae  Michaelsen, 1907)
 * Grania pusilla Erséus, 1974
 * Grania quaerens Rota, Wang & Erséus, 2007
 * Grania reducta Coates, 1985
 * Grania regina De Wit, Rota & Erséus, 2009
 * Grania roscoffensis Lasserre, 1967
 * Grania simonae Prantoni, De Wit & Erséus, 2016
 * Grania sperantia Rota, Wang & Erséus, 2007
 * Grania stephensoniana Rota & Erséus, 1997
 * Grania stilifera Erséus, 1990
 * Grania tasmaniae Rota & Erséus, 2000
 * Grania torosa Rota & Erseus, 2003
 * Grania trichaeta Jamieson, 1977
 * Grania unitheca Prantoni, De Wit & Erséus, 2016
 * Grania vacivasa Coates & Stacey, 1993
 * Grania variochaeta Erséus & Lasserre, 1976
 * Grania vikinga Rota & Erseus, 2003