Didemnidae Giard, 1872
Diplosoma abbotti Eldredge, 1966
Diplosoma aggregatum Hirose & Hirose, 2009
Diplosoma antarcticum Kott, 1969
Diplosoma ata Monniot & Monniot, 1987
Diplosoma carnosum Drasche, 1883
Diplosoma fecundum Kott, 2004
Diplosoma gelatinosa Harant & Vernières, 1938
Diplosoma gemmifera Thiel, 1938
Diplosoma glandulosum Monniot, 1983
Diplosoma gumavirens Hirose E, Oka & Hirose M, 2009
Diplosoma handi Eldredge, 1966
Diplosoma hitatti Eldredge, 1966
Diplosoma lafargueae Vazquez, 1993
Diplosoma listerianum (Milne-Edwards, 1841)
Diplosoma longinquum (Sluiter, 1912)
Diplosoma lukini Romanov, 1989
Diplosoma macdonaldi Herdman, 1886
Diplosoma marsupiale Monniot, & Monniot, 2001
Diplosoma matie Monniot & Monniot, 1987
Diplosoma migrans (Menker & Ax, 1970)
Diplosoma mitsukuri Oka, 1892
Diplosoma modestum Michaelsen, 1920
Diplosoma multipapillata Kott, 1980
Diplosoma multitestis Monniot & Monniot, 1996
Diplosoma okai Tokioka, 1949
Diplosoma ooru Oka, Suetsugu & Hirose, 2005
Diplosoma pannosum Monniot, & Monniot, 2001
Diplosoma pavonina Monniot & Monniot, 1987
Diplosoma pizoni Ritter & Forsyth, 1917
Diplosoma ponticum Romanov, 1989
Diplosoma purpurea Sluiter, 1898
Diplosoma redika Monniot & Monniot, 1994
Diplosoma simiguwa Oka & Hiruose, 2005
Diplosoma simile (Sluiter, 1909)
Diplosoma simileguwa Oka, Suetsuga & Hirose, 2005
Diplosoma singulare Lafargue, 1968
Diplosoma siphonale Romanov, 1977
Diplosoma spongiforme (Giard, 1872)
Diplosoma translucidum (Hartmeyer, 1909)
Diplosoma tritestis Monniot, 1984
Diplosoma unitestis Monniot, & Monniot, 2001
Diplosoma variostigmatum Hirose & Oka, 2008
Diplosoma velatum Kott, 2001
Diplosoma versicolor Monniot & Monniot, 1994
Diplosoma virens (Hartmeyer, 1909)
Diplosoma viscosum (Savigny, 1816)
Diplosoma watanabei Hirose E, Oka AT, Hirose M, 2009
