Kingdom Animalia Linnaeus, 1758 - animals
  
 Phylum Mollusca Linnaeus, 1758 - molluscs
    
 Class Gastropoda Cuvier, 1795 - snails and slugs
      
 Subclass Opisthobranchia Milne-Edwards, 1848 - opisthobranchs
 see Order Opisthobranchia Milne-Edwards, 1848
        
 Order Nudibranchia Cuvier, 1814 - "true" nudibranchs
          
 Genus Acanthodoris Gray, 1850
          
 Genus Aegires Lovén, 1844
          
 Genus Aeolidia Cuvier, 1798
          
 Genus Armina Rafinesque, 1814
          
 Genus Bornella Gray, 1850
          
 Genus Calma Alder & Hancock, 1855
          
 Genus Chromodoris Alder & Hancock, 1855
          
 Genus Corambe Bergh, 1869
          
 Genus Coryphella Gray, 1850
          
 Genus Dendrodoris Ehrenberg, 1831
          
 Genus Dendronotus Alder & Hancock, 1845
          
 Genus Doris Linnaeus, 1758
          
 Genus Embletonia Alder & Hancock, 1851
          
 Genus Fiona Alder & Hancock, 1853
          
 Genus Glaucus Forster, 1777
          
 Genus Hexabranchus Ehrenberg, 1828
          
 Genus Janolus Bergh, 1884
          
 Genus Phyllidia Cuvier, 1797
          
 Genus Polycera Cuvier, 1817
          
 Genus Rostanga Bergh, 1879
          
 Genus Scyllaea Linnaeus, 1758
          
 Genus Trinchesia Ihering, 1879