Felimare acriba (Er. Marcus& Ev. Marcus, 1967)
Chromodoris adeima N. Yonow, 1984
Glossodoris aeruginosa W.B. Rudman, 1995 Coral Sea
Chromodoris africana C.N.E. Eliot, 1904 73 mm
Thorunna africana W.B. Rudman, 1984 Tanzania, Dar es Salaam16 mm
Felimare agassizii (L.S.R. Bergh, 1894) Galapagos
Chromodoris aila Er. Marcus, 1961
Hypselodoris alaini J.A. Ortea, J. Espinosa& Y. Buske, 2013 Guadeloupe
Chromodoris albescens (Schultz in R.A. Philippi, 1836)
Noumea alboannulata W.B. Rudman, 1986 Coral Sea
Durvilledoris albofimbria W.B. Rudman, 1995
Chromodoris albolimbata L.S.R. Bergh, 1907
Goniobranchus albomaculatus W.H. Pease, 1866
Goniobranchus albonares (W.B. Rudman, 1990) Western Australia
Chromodoris albonotata L.S.R. Bergh, 1875
Goniobranchus albopunctatus A. Garrett, 1879 New South Wales
Goniobranchus albopustulosus (W.H. Pease, 1860)
Hypselodoris alboterminata T.M. Gosliner& R.F. Johnson, 1999
Goniobranchus alderi (C. Collingwood, 1881)
Goniobranchus alius (W.B. Rudman, 1987)
Miamira alleni (T.M. Gosliner, 1996)
Chromodoris alternata (R.F. Burn, 1957) Australia, Victoria
Felimare amalguae (T.M. Gosliner& H.W. Bertsch, 1988)
Chromodoris ambiguus W.B. Rudman, 1987 Australia, Victoria
Ceratosoma amoenum (T.F. Cheeseman, 1886) South Australia58 mm
Hypselodoris andersoni H.W. Bertsch& T.M. Gosliner, 1989
Glossodoris angasi W.B. Rudman, 1986 New South Wales
Ardeadoris angustolutea (W.B. Rudman, 1990) Marshall Islands
Chromodoris annae L.S.R. Bergh, 1877 Queensland
Goniobranchus annulatus (C.N.E. Eliot, 1904)
Mexichromis antonii (H.W. Bertsch, 1976)
Hypselodoris apolegma (N. Yonow, 2001)
Thorunna arbuta (R.F. Burn, 1961) Tasmania
Glossodoris ariponensis (E.F. Kelaart, 1859)
Ceratodoris armata C.N.E. Eliot, 1913