Cowryshells (also spelled "cowrie"), are marinesnails of the genusCypraea (familyCypraeidae), found chiefly in tropical regions, especially around the Maldives or the East Indies. The shell itself is smooth and more or less egg-shaped, with a long, narrow, slit-like opening (aperture). Sizes range from 5 mm (1/5") for some Europeanspecies to 10 cm (4") for the Tiger Cowry, Cypraea tigris.
Cowries (esp. Cypraea moneta) were used as a currency in Africa (e.g., Nigeria) and elsewhere. They are also worn as jewelry or otherwise used as ornaments or charms, as they are viewed as symbols of womanhood, fertility, birth and wealth. Many find the shiny, porcelain-like shells pleasing to look at.
Cowry shells are sometimes used in a way similar to dice, e.g., in board games like Pachisi, or in divination (cf. Ifá and the annual customs of Dahomey). A number of shells (6 or 7 in Pachisi) are thrown, with those landing aperture upwards indicating the actual number rolled.
Upwards of loo species are recognized, and they are widely distributed over the world - their habitat being the shallow water along the sea-shore.
The best known is the money cowry or Cypraea moneta, a small shell about half an inch in length, white and straw-coloured without and blue within, which derives its distinctive name from the fact that in various countries it has been employed as a kind of currency.