Acera bullata (O. F. Müller, 1776) accepted as Akera bullata O. F. Müller, 1776
Acera bullata var. nana Jeffreys, 1867 accepted as Akera bullata O. F. Müller, 1776
Acera elegans Locard, 1886 accepted as Akera bullata O. F. Müller, 1776
Acera spirata Staadt, 1913 † accepted as Akera spirata Staadt, 1913 †
Aceras africana Locard, 1897 accepted as Cylichnium africanum (Locard, 1897)
Aceras elegans Locard, 1886 accepted as Akera bullata O. F. Müller, 1776
Aceras fischeri Locard, 1897 accepted as Cylichnium africanum (Locard, 1897)
Aclesia africana Engel, 1926 accepted as Bursatella leachii Blainville, 1817
Aclesia areola Pease, 1860 (uncertain > unassessed )
Aclesia euchlora H. Adams & A. Adams, 1854 accepted as Aplysia (Phycophila) euchlora A. Adams, 1861 accepted as Phycophila euchlora (A. Adams, 1861)
Aclesia freeri L. E. Griffin, 1912 accepted as Bursatella leachii Blainville, 1817
Aclesia glauca Cheeseman, 1878 accepted as Bursatella leachii Blainville, 1817
Aclesia longicauda Engel, 1927 (uncertain > taxon inquirendum )
Aclesia nigra Engel, 1927 (uncertain > taxon inquirendum )
Aclesia ocelligera Bergh, 1902 accepted as Bursatella ocelligera (Bergh, 1902)
Aclesia orientalis Engel, 1926 (uncertain > taxon inquirendum )
Aclesia polyomma (Mörch, 1863) accepted as Stylocheilus polyomma (Mörch, 1863)
Aclesia pusilla Bergh, 1905 (uncertain > taxon inquirendum )
Aclesia rickettsi MacFarland, 1966 accepted as Stylocheilus rickettsi (MacFarland, 1966)
Aclesia rosea Engel, 1926 accepted as Bursatella leachii Blainville, 1817
Aclesia varicolor Bergh, 1905 accepted as Phyllaplysia varicolor (Bergh, 1905)
Akera aperta Hedley, 1899 accepted as Oxynoe aperta (Hedley, 1899)
Akera bayeri Ev. Marcus & Er. Marcus, 1967
Akera bullata O. F. Müller, 1776
Akera constricta Kuroda, 1947
Akera eliai Shalem, 1928 † accepted as Hamlinia eliai (Shalem, 1928) †
Akera flexilis T. Brown, 1844 accepted as Akera bullata O. F. Müller, 1776
Akera julieae Á. Valdés & Barwick, 2005
Akera silbo Ortea & Moro, 2009
Akera soluta (Gmelin, 1791)
Akera spirata Staadt, 1913 †
Akera striatella (Lamarck, 1804) †
Akera tasmanica C. E. Beddome, 1883 accepted as Diaphana tasmanica (C. E. Beddome, 1883)
Akera thompsoni Olsson & T. L. McGinty, 1951 accepted as Akera bayeri Ev. Marcus & Er. Marcus, 1967
Aplysia (Aplysia) nigra A. d'Orbigny, 1836 represented as Aplysia nigra A. d'Orbigny, 1836
Aplysia (Metaplysia) badistes Pilsbry, 1951 accepted as Aplysia juliana Quoy & Gaimard, 1832
Aplysia (Neaplysia) nettiae Winkler, 1959 accepted as Aplysia californica J. G. Cooper, 1863
Aplysia (Phycophila) euchlora A. Adams, 1861 accepted as Phycophila euchlora (A. Adams, 1861)
Aplysia (Phycophila) ocellata A. Adams, 1861 accepted as Tethys (Phycophila) adamsi Pilsbry, 1896
Aplysia (Pruvotaplysia) concava G. B. Sowerby I, 1833 represented as Aplysia concava G. B. Sowerby I, 1833
Aplysia (Pruvotaplysia) parvula Mörch, 1863 represented as Aplysia parvula Mörch, 1863
Aplysia (Tethys) benedicti Eliot, 1900 accepted as Aplysia argus Rüppell & Leuckart, 1830
Aplysia (Varria) dactylomela Rang, 1828 represented as Aplysia dactylomela Rang, 1828
Aplysia (Varria) extraordinaria (J. K. Allan, 1932) represented as Aplysia extraordinaria (J. K. Allan, 1932)
Aplysia (Varria) inca A. d'Orbigny, 1836 represented as Aplysia inca A. d'Orbigny, 1836
Aplysia aequorea Heilprin, 1888 accepted as Aplysia dactylomela Rang, 1828
Aplysia albopunctata Deshayes, 1853 accepted as Aplysia punctata (Cuvier, 1803)
Aplysia allochroa Bergh, 1908 (uncertain > nomen dubium )
Aplysia angasi G. B. Sowerby I, 1869 accepted as Aplysia argus Rüppell & Leuckart, 1830
Aplysia anguilla G. B. Sowerby I, 1869 (uncertain > taxon inquirendum )
Aplysia annulifera Thiele, 1930 accepted as Aplysia argus Rüppell & Leuckart, 1830
Aplysia argus Rüppell & Leuckart, 1830
Aplysia ascifera Rang, 1828 accepted as Dolabrifera ascifera (Rang, 1828)
Aplysia atromarginata Bergh, 1905
Aplysia australiana Clessin, 1899 accepted as Aplysia parvula Mörch, 1863
Aplysia benedicti Eliot, 1900 accepted as Aplysia argus Rüppell & Leuckart, 1830
Aplysia bourailli Risbec, 1951 accepted as Aplysia dactylomela Rang, 1828
Aplysia brasiliana Rang, 1828
Aplysia brasiliensis G. B. Sowerby I, 1833 (uncertain > taxon inquirendum )
Aplysia brongniartii Blainville, 1825 (uncertain > nomen dubium )
Aplysia brugnatelli van Beneden & Robb, 1835 accepted as Petalifera petalifera (Rang, 1828)
Aplysia brunnea F. W. Hutton, 1875 accepted as Aplysia juliana Quoy & Gaimard, 1832
Aplysia bursatella Rang, 1834 accepted as Bursatella leachii Blainville, 1817
Aplysia californica J. G. Cooper, 1863
Aplysia cedrosensis Bartsch & Rehder, 1939
Aplysia cervina (Dall & C. T. Simpson, 1901)
Aplysia chierchiana Mazzarelli & Zuccardi, 1889 accepted as Aplysia inca A. d'Orbigny, 1836
Aplysia cirrhifera Quoy & Gaimard, 1832 accepted as Bursatella leachii Blainville, 1817
Aplysia citrina Rang, 1828 accepted as Stylocheilus longicauda (Quoy & Gaimard, 1825)
Aplysia concava G. B. Sowerby I, 1833
Aplysia cornigera G. B. Sowerby II, 1869
Aplysia cronullae Eales, 1960 accepted as Aplysia extraordinaria (J. K. Allan, 1932)
Aplysia cuvieri Delle Chiaje, 1828 accepted as Aplysia punctata (Cuvier, 1803)
Aplysia dactylomela Rang, 1828
Aplysia denisoni E. A. Smith, 1884 accepted as Aplysia extraordinaria (J. K. Allan, 1932)
Aplysia depilans Gmelin, 1791
Aplysia depressa Cantraine, 1835 accepted as Petalifera petalifera (Rang, 1828)
Aplysia dolabella Cuvier, 1805 (uncertain > nomen dubium )
Aplysia dolabrifera Rang, 1828 accepted as Dolabrifera dolabrifera (Rang, 1828)
Aplysia donca Ev. Marcus & Er. Marcus, 1960 accepted as Aplysia morio (A. E. Verrill, 1901)
Aplysia dumortieri Cantraine, 1835 accepted as Aplysia punctata (Cuvier, 1803)
Aplysia dura Eales, 1960
Aplysia ecaudata Rang, 1828 accepted as Dolabella auricularia ([Lightfoot], 1786)
Aplysia elongata (Pease, 1860)
Aplysia euchlora A. Adams, 1861 accepted as Phycophila euchlora (A. Adams, 1861)
Aplysia eusiphonata Bergh, 1907 accepted as Aplysia maculata Rang, 1828
Aplysia excavata G. B. Sowerby I, 1869 accepted as Aplysia sydneyensis G. B. Sowerby I, 1869
Aplysia extraordinaria (J. K. Allan, 1932)
Aplysia fasciata Poiret, 1789
Aplysia ferussaci Rang, 1828 accepted as Aplysia punctata (Cuvier, 1803)
Aplysia fimbriata A. Adams & Reeve, 1850 accepted as Aplysia argus Rüppell & Leuckart, 1830
Aplysia fimbriata A. Gould, 1850 (uncertain > taxon inquirendum )
Aplysia gargantua Bergh, 1907 accepted as Aplysia maculata Rang, 1828
Aplysia gelatinosa Rang, 1828 accepted as Notarchus indicus Schweigger, 1820
Aplysia geographica (A. Adams & Reeve, 1850) accepted as Syphonota geographica (A. Adams & Reeve, 1850)
Aplysia ghanimii Golestani, Crocetta, Padula, Camacho-García, Langeneck, Poursanidis, Pola, Yokeş, Cervera, D.-W. Jung, Gosliner, Araya, Hooker, Schrödl & Á. Valdés, 2019
Aplysia gigantea G. B. Sowerby I, 1869
Aplysia gigas Rang, 1828 accepted as Dolabella auricularia ([Lightfoot], 1786)
Aplysia gilchristi Bergh, 1907 accepted as Aplysia maculata Rang, 1828
Aplysia gouldii H. Adams & A. Adams, 1854 (uncertain > taxon inquirendum )