Cowrie Shells

Molluscs | Clams | Oysters | Cowrie Shells | Squid, Octopus, Cuttlefish | Nautilus | Nudibranchs | Chitons | Snails

A live cowrie

Cowrie shells belong to the largest subclass of gastropods - the Prosobranchia, a group that includes periwinkles, limpets, whelks, conchs, abalones and other familiar shells.

Habitat and feeding

Cowries are common in tropical waters and may be found under boulders and in crevices among the coral where they feed primarily on sponges.

Physiology

Usually oval in shape with a flattened base and narrow opening, the spiral nature of the cowrie shell is obscured by the outer whorl.

The cowries are most attractive as live animals when the lobes of their mantle are extended over the shell, protecting the glossy surface, and often adding a striking contrast to colour.

The tiger cowrie (Cypraea tigris), stands out by its size and dark, spotted pattern, while the smaller tan and white cowrie (C. cribaria), has a brilliant orange mantle with a striking tan and white shell.

Threats

The shells of Cowries are popular collectors items because of their 'high gloss' finish.

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