Noumea romeri J.J. Risbec, 1928
Hypselodoris rosans (L.S.R. Bergh, 1889)
Chromodoris roseopicta A.E. Verrill, 1900
Chromodoris rubra L.S.R. Bergh, 1905
Ardeadoris rubroannulata (W.B. Rudman, 1986)
Goniobranchus rubrocornutus (W.B. Rudman, 1985)
Hypselodoris rudmani T.M. Gosliner& R.F. Johnson, 1999
Chromodoris rudolphi L.S.R. Bergh, 1880
Goniobranchus rufomaculatus (W.H. Pease, 1871)
Glossodoris rufomarginata (L.S.R. Bergh, 1890)
Felimare ruthae (Ev. Marcus & R.N. Hughes,1974)
Felimida ruzafai (J.A. Ortea, J.J. Bacallado& Á. Valdés, 1992)
Cadlinella sagamiensis (K. Baba, 1937)
Hypselodoris sagamiensis (K. Baba, 1949)
Hypselodoris saintvincentia R.F. Burn, 1962
Hypselodoris samueli G.M. Caballer & J.A. Ortea,2012
Berlanguella scopae J.A. Ortea, J.J. Bacallado& Á. Valdés, 1992
Ardeadoris scottjohnsoni H.W. Bertsch& T.M. Gosliner, 1989
Felimare sechurana Hoover, Padula, Schrödl, Hooker& Valdés, 2017
Doriprismatica sedna (Er. Marcus & Ev. Marcus,1967)
Glossodoris semeion R. Winckworth, 1946
Goniobranchus setoensis (K. Baba, 1938)
Hypselodoris shimodaensis K. Baba, 1994
Doriprismatica sibogae (L.S.R. Bergh, 1905)
Mexichromis similaris (W.B. Rudman, 1986)
Noumea simplex (W.H. Pease, 1871)
Goniobranchus sinensis (W.B. Rudman, 1985)
Miamira sinuata (J.C. van Hasselt, 1824)
Felimare sisalensis D. Ortigosa & Á. Valdés,2012
Felimida socorroensis (D.W. Behrens, T.M. Gosliner& A. Hermosillo, 2009)
Glossodoris souverbiei (J.C.H. Crosse, 1875)
Gruvelia spahri J.J. Risbec, 1928
Thorunna speciosa W.B. Rudman, 1990
Noumea spencerensis W.B. Rudman, 1987
Felimida sphoni Ev. Marcus, 1971