Chromodoris splendens C.N.E. Eliot, 1904
Goniobranchus splendidus (G.F. Angas, 1864)
Doriprismatica stellata (W.B. Rudman, 1986)
Chromodoris striatella L.S.R. Bergh, 1877
Chromodoris strigata W.B. Rudman, 1982
Noumea subnivalis K. Baba, 1987
Cadlinella subornatissima K. Baba, 1996
Glossodoris subpulchella (F.D. Abraham, 1877)
Noumea sudanica W.B. Rudman, 1985
Diversidoris sulphurea (W.B. Rudman, 1986)
Felimare sycilla (L.S.R. Bergh, 1890)
Ardeadoris symmetrica (W.B. Rudman, 1990)
Thorunna talaverai J.A. Ortea, J.J. Bacallado& Á. Valdés, 1992
Goniobranchus tasmaniensis (L.S.R. Bergh, 1905)
Felimare tema (M. Edmunds, 1981)
Chromodoris tenerrima (E. Forbes, 1844)
Goniobranchus tennentanus (E.F. Kelaart, 1859)
Ceratosoma tenue F.D. Abraham, 1876
Chromodoris tenuilinearis G.P. Farran, 1905
Chromodoris tenuis (C. Collingwood, 1881)
Glossodoris thalassopora (L.S.R. Bergh, 1879)
Chromodoris thompsoni W.B. Rudman, 1983
Doriprismatica tibboeli (Á. Valdés & M.J. Adams,2005)
Mexichromis tica T.M. Gosliner, J.A. Ortea& Á. Valdés, 2004
Goniobranchus tinctorius (W.P.E.S. Rüppell& F.S. Leuckart, 1830)
Ardeadoris tomsmithi (H.W. Bertsch& T.M. Gosliner, 1989)
Felimare tricolor (F.J. Cantraine, 1835)
Mexichromis trilineata (A. Adams & L.A. Reeve,1850)
Ceratosoma trilobatum (J.E. Gray, 1827)
Goniobranchus trimarginatus (R. Winckworth, 1946)
Goniobranchus tritos (N. Yonow, 1994)
Chromodoris trouilloti J.J. Risbec, 1928
Hypselodoris tryoni (A. Garrett, 1873)
Goniobranchus tumuliferus (C. Collingwood, 1881)
Mexichromis tura (Er. Marcus & Ev. Marcus,1967)