Senegal, lake Retba
Lake Retba (or Lac Rose as locals know it) is separated only by some narrow dunes from the Atlantic Ocean, and, as expected, its salt content is very high.
Its salinity content compares to that of the Dead Sea, and during the dry season, it exceeds it.
Its distinct pink colour is caused by the Dunaliella salina bacteria, which is attracted by the lake’s salt content.
The bacteria produces a red pigment to absorb the sunlight, thus giving the lake its unique colour



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