NZ Mollusca

Phylum and Class Index



  • Mollusca
  • MonoplacophoraMonoplacophora
    Deep-water, limpet-like molluscs. Exclusively marine.
  • PolyplacophoraPolyplacophora
    Chitons. 8 plaits or valves, embedded in surrounding girdle.
  • GastropodaGastropoda
    Snails, slugs and nudibranchs. Marine, land and freshwater.
  • ScaphopodaScaphopoda
    Tusk Shells. Exclusively marine.
  • BivalviaBivalvia
    Clams, Mussels, Oysters, Pipi. Marine and freshwater.
  • CephalopodaCephalopoda
    Octopus, Squid, Nautilus. Exclusively marine.


  • Echinodermata
  • AsteroideaAsteroidea
    Starfish or Sea Stars. Usually star-shaped with a central disc, and five arms
  • OphiuroideaOphiuroidea
    Star-shaped echinoderms with a distinct central disc, and usually five slender arms.
  • EchinoideaEchinoidea
    Sea Eggs, Kina and Sea Urchins belong to the group Echinoidea.