A netted dog whelk in the middle of a common mussel colony


Molluscs include the largest of all invertebrates - the giant squid. This is a diverse phylum, containing approximately 100,000 species, that includes snails, mussels and the pearly nautilus. Molluscs are soft-bodied and most species today still possess the ancestral shell. Some notable examples however, such as squid and slugs, have lost it.

Scientific name: Mollusca

Rank: Phylum

Common names:

  • Mollusca,
  • Mollusks

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The Molluscs can be found in a number of locations including: Great Barrier Reef. Find out more about these places and what else lives there.

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Discover what these behaviours are and how different plants and animals use them.

Egg layer Egg layer
Oviparous animals lay eggs, inside which the young then develop before hatching occurs. Birds, reptiles, amphibians, fish, invertebrates and even some mammals (the monotremes) all lay eggs but they're of very different size and construction.

Additional data source: Animal Diversity Web


  1. Life
  2. Animals
  3. Molluscs

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