Rostanga setidens (N.H. Odhner, 1939)
Thordisa setosa (W.H. Pease, 1860)
Discodoris sordii (A. Perrone, 1990)
Thordisa souriei A. Pruvot-Fol, 1953
Jorunna spazzola (Er. Marcus, 1955)
Carminodoris spinobranchialis J.A. Ortea & I. Martínez,1992
Atagema spinosa (J.J. Risbec, 1928)
Sclerodoris spinulosa (G.P. Farran, 1905)
Asteronotus spongicolus T.M. Gosliner & Á. Valdés,2002
Platydoris spongilla J.J. Risbec, 1928
Atagema spongiosa (E.F. Kelaart, 1858)
Jorunna spongiosa J. Alvim & A. Pimenta,2013
Discodoris stellifera (H.F.A. von Iheringin A.J.B.M. Vayssière, 1904)
Geitodoris sticta M.C. Miller, 1996
Baptodoris stomascuta (P. Bouchet, 1977)
Discodoris stragulata (F.D. Abraham, 1877)
Platydoris striata (E.F. Kelaart, 1858)
Halgerda stricklandi S.J. Fahey & T.M. Gosliner,1999
Platydoris tabulata (F.D. Abraham, 1877)
Thordisa tahala G.L. Chan & T.M. Gosliner,2007
Sclerodoris tanya (Ev. Marcus, 1971)
Sclerodoris tarka R.F. Burn, 1969
Taringa telopia Er. Marcus, 1955
Geitodoris tema (M. Edmunds, 1968)
Peltodoris temarensis M. Edmunds, 2011
Jorunna tempisquensis Y. Camacho-García& T.M. Gosliner, 2008
Halgerda terramtuentis H.W. Bertsch & S. Johnson,1982
Halgerda tessellata (L.S.R. Bergh, 1880)
Halgerda theobroma S.J. Fahey & T.M. Gosliner,2001
Anisodoris timorensis L.S.R. Bergh, 1905
Halgerda toliara S.J. Fahey & T.M. Gosliner,1999
Jorunna tomentosa (G.L.C.F.D. Cuvier, 1804)
Sclerodoris trenberthi (R.F. Burn, 1962)
Atagema tristis (J. Alder & A. Hancock,1864)
Discodoris tristis L.S.R. Bergh, 1899