This 100km long beach is entirely composed of tiny cockle shells and is one of only two shell beaches in the world. L' Haridon Bight is the bay around which the beach curves while the Faure Sill is a sandbank which cuts off much of the bay’s exit, creating a unique environment. The water in the bay evaporates at a fast rate owing to the climate and white colour of the shallow seabed while the salts do not. The Faure Sill maintains this isolated volume of especially saline water. This environment does not suit the predators of cockle shells so they thrive. Dugongs also flourish here.
This detail picture was shot at sunset. Above the high tide mark, the shells are naturally mixed with limestone to create a solid conglomerate which can be cut into bricks and used in construction. This mining was stopped when the area of Shark Bay was designated a world heritage site with the exception of mining to maintain two historical buildings within the town of Denham.