| Taxonomic Hierarchy 
        
          |  |  |  |  |  |  | Kingdom | Animalia 
 – Animal, animaux, animals |  |  |  | Subkingdom | Bilateria 
 – triploblasts |  |  |  | Infrakingdom | Protostomia |  |  |  | Superphylum | Spiralia |  |  |  | Phylum | Mollusca 
 – mollusques, molusco, molluscs, mollusks |  |  |  | Class | Gastropoda Cuvier, 1797
 – gastropods, slugs, snails, escargots, gastéropodes, limaces, caracol, caramujo, lesma |  |  |  | Subclass | Orthogastropoda |  |  |  | Infraclass | Heterobranchia |  |  |  | Order | Aplysiida |  |  |  | Superfamily | Aplysioidea Lamarck, 1809 |  |  |  | Family | Aplysiidae Lamarck, 1809 |  |  |  | Genus | Aplysia Linnaeus, 1767 |  |  
          |  |  | Direct Children: |  |  |  | Species | Aplysia brasiliana Rang, 1828
 – sooty seahare, mottled seahare |  |  |  | Species | Aplysia californica J. G. Cooper, 1863
 – California seahare |  |  |  | Species | Aplysia cervina (Dall and Simpson, 1901) |  |  |  | Species | Aplysia dactylomela Rang, 1828
 – spotted seahare |  |  |  | Species | Aplysia depilans Gmelin, 1791 |  |  |  | Species | Aplysia donca Ev. Marcus and Er. Marcus, 1960 |  |  |  | Species | Aplysia fasciata Poiret, 1798 |  |  |  | Species | Aplysia geographica (A. Adams and Reeve, 1850) |  |  |  | Species | Aplysia juliana Quoy and Gaimard, 1832
 – walking seahare |  |  |  | Species | Aplysia morio (A. E. Verrill, 1901)
 – atlantic black seahare, sooty seahare |  |  |  | Species | Aplysia parvula Morch, 1863
 – pygmy seahare |  |  |  | Species | Aplysia punctata |  |  |  | Species | Aplysia reticulopoda Beeman, 1960
 – net-foot seahare |  |  |  | Species | Aplysia vaccaria Winkler, 1955
 – California black seahare |  |  
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