The word Michumash, from which the name Chumash is derived, means «makers of shell bead money» and is the term mainland Chumash used to refer to those inhabiting the islands. (nps.gov)
A close examination of shell beads from Blombos Cave (top) suggests that ancient humans there started off with one style of jewelry (bottom) and then shifted to another (middle) ov (sciencemag.org)
Visit the museum and experience the Chumash people, «the ones who make shell bead money.» (sbnature.org)