The most familiar form may be the wampum created by the Indigenous peoples of the East Coast of North America, ground beads cut from the purple part of marine bivalve shells. The shell most widely used worldwide as currency was the shell of Cypraea moneta, the money cowry. This species is most abundant in the Indian Ocean, and was collected in the Maldive Islands, in Sri Lanka, along the Malabar coast, in Borneo and on other East Indian islands, and in various parts of the African coast from Ras Hafun to Mozambique.