About Erronea errones (Linnaeus, 1758)
The shells of Erronea errones are very common. On average, they reach a length of 20–28 millimetres (0.79–1.10 in), with a maximum size of 45 millimetres (1.8 in) and a minimum size of 13 millimetres (0.51 in). Their dorsum is usually pale brown or greenish, with very variable patterns of darker greenish transverse bands or spots. The base of the shell and the teeth of the aperture are white. In living cowries, the greenish, papillose mantle provides camouflage. This species is distributed in the East Indian Ocean along the coasts of South India, the Andaman Islands, Madagascar and Tanzania, and in the West Pacific Ocean along Indonesia, Malaysia, the Philippines, New Caledonia, Samoa and Australia. These cowries live in shallow tropical waters at low tide, usually under rocks or stones, and feed on algae.