Inside tip · Shark Bay & Monkey Mia
Shark Bay's Shell Beach is made of billions of tiny shells from what?
Answer: Shark Bay cockles
The Shark Bay cockle, a small burrowing mollusc found only in WA. In places the shells are 10m deep.
The water is clear and shallow, good for a cooling swim. In the early 1900s the shells were cut into blocks to build historic buildings in nearby Denham.
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