shell beach

Shell Beach is a beach in the Shark Bay region of Western Australia, located 45 km south-east of Denham. Situated on the northeastern side of the Taillefer Isthmus along the L'Haridon Bight, the beach is covered with shells for a 60 km stretch to a depth of 7–10 m. It is one of only two beaches in the world made entirely from shells.
Data from: en.wikipedia.org