Lake Retba, also known as Lac Rose, meaning Pink Lake, lies north of the Cap Vert peninsula of Senegal, at least 30km north-east of the capital, Dakar.
The lake is known for its pink waters and high salt content.
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Its pink waters is caused by Dunaliella salina algae which produces a red coloured pigment.
The lake is said to be intensely pink during the dry season (November through June), and less during the rainy season (July through October).
The lake has up to 40% salt content in some areas, which is mainly due to ingress of seawater and its subsequent evaporation.
Also, just like the famous Dead Sea, the lake is sufficiently buoyant that people can float easily.
The salt is mainly used by Senegalese fishermen to preserve fish, with about 38,000 tonnes of salt harvested from the lake each year.
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Lake Retba is under consideration by UNESCO as a World Heritage Site.
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