Birridas of Shark Bay

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Birridas of Shark Bay (2)

The most westerly point of the Australian continent, next to the Indian Ocean is called Shark Bay, an area of exceptional natural features and a World Heritage site. Thousands of years ago, when sea levels were much higher than they are today, birridas were landlocked saline lakes between sand dunes. The water was rich in sulphate of lime that was deposited onto the lake floor. When the sea level dropped, the lakes dried up creating salty hollows, and the sulphate of lime evaporated and became loose, powdery gypsum.

Birridas of Shark Bay (1)

 

Birridas of Shark Bay (2)

 

Birridas of Shark Bay (3)

 

Birridas of Shark Bay (4)

 

Birridas of Shark Bay (5)

 

Birridas of Shark Bay (6)

 

Birridas of Shark Bay (7)

 

Birridas of Shark Bay (8)

 

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