Kaneohe Bay, Oahu, 2 feet, 28mm

Kaiona, Oahu, 1 foot, 19mm

Waimanalo, Oahu, 1 foot

Makapu'u tidepool, Oahu

Kahalu'u tidepool, Hawaii

Kahalu'u tidepool, Hawaii

Moku o Loe, Kaneohe Bay, Oahu

Rare except on Maui and Hawaii, it is abundant everywhere else in the Indo-West Pacific.  Used as currency in many countries until the 1800's.  Found exposed during the day on weed-covered rocks on silty sand or wave benches in shallow water.  Has an attractive zebra-striped mantle.  Attains 1.5 inch.