This species is called “money cowry” because the shells were historically widely used in many Pacific and Indian Ocean countries as shell money before coinage was in common usage.

It is a quite small cowry, up to 3 cm (1.2 in), irregular and flattened, with very calloused edges and roughly subhexagonal. The color is pale (from white to dirty beige), but the dorsum seems transparent, often greenish grey with yellowish margins, with sometimes darker transverse stripes and a delicate yellow ring. The opening is wide and white, with pronounced denticules. The mantle of the live animal is mottled with black and off-white.

This is a very common species which is found widely in Indo-Pacific tropical waters. It is present in numerous regions, including East and South Africa, Madagascar, the Red Sea and the Persian Gulf, Maldives, eastern Polynesia, Galapagos, Clipperton and Cocos islands off Central America, southern Japan, Midway and Hawaii, and northern New South Wales and Lord Howe Island.

This cowry lives in intertidal rocky areas and shallow tide pools among sea weed, coral remains, and empty bivalve shells. It can be found on and under rocks in shallow water and on exposed reefs at low tide. It feeds on algae and marine vegetation growing on loose rocks and pieces of dead coral.

Shells of this cowry were commonly used as a medium of exchange in many areas of Africa, Asia and the Pacific islands until the late 19th century. The Maldives provided the main source of cowrie shells, throughout Asia and parts of the East African coast. Huge amounts of Maldivian cowries were introduced into Africa by slave traders. It was also traded to Native Americans by European settlers. The shell is still used in divination rituals in some African animist religions.

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Monetaria moneta

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Monetaria moneta

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Monetaria moneta

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Monetaria moneta

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Monetaria moneta

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Monetaria moneta – bumpy!

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Monetaria moneta – large

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Monetaria moneta – nice colour and rostration!

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Monetaria moneta – rostrate with dark patch!

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Monetaria moneta – rostrate!