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biodiversity explorer

the web of life in southern Africa

Mollusca (snails, limpets, mussels, chitons, squid, octopuses, etc)

Life > Eukaryotes > Opisthokonta > Metazoa (animals) > Bilateria > Lophotrochozoa

Pear Limpet Patella cochlear (photo H.G. Robertson, S.A. Museum).


Nudibranch Mandelia mirocornata (Mandeliidae), named after Nelson Mandela (photo kindly supplied by Ángel Valdés and Terry Gosliner, California Academy of Sciences - copyright) 

Garden snail Helix aspersa (photo H.G. Robertson, S.A. Museum).


  • Class: Aplacophora. Worm-shaped deap-sea molluscs without shells. See the Aplacophora Home Page.
  • Class: Bivalvia (Bivalves)
  • Class: Cephalopoda (Cephalopods)
  • Class: Gastropoda (Gastropods)
    • Subclass: Prosobranchia (winkles, whelks and limpets)
      • Archaeogastropoda
      • Mesogastropoda
      • Neogastropoda
    • Subclass: Opisthobranchia (sea slugs and nudibranchs)
      • Acochlidioidea
      • Cephalaspidea (bubble shells)
      • Runcinoidea
      • Sacoglossa
      • Anaspidea (sea hares)
      • Thecosomata
      • Gymnosomata
      • Notaspidea
      • Nudibranchia (sea slugs). Includes a species recently named after Nelson Mandela called Mandelia mirocornata.
    • Subclass: Pulmonata (snails, slugs and false limpets)
      • Archaeopulmonata
      • Basommatophora
      • Stylommatophora
  • Class: Monoplacophora
  • Class: Polyplacophora (Chitons).
  • Class: Scaphopoda (Tusk shells)