The Secret Behind Senegal's Pink Lake

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The water in Senegal's Lake Retba always seems to have a pinkish hue to it. However, catch it during the dry summer months when the saline levels are high and you will see it turn strawberry pink and sometimes, even red. The good news is that color is not the result of chemicals being dumped in the lake but nature, working its magical tricks!

Located in the Cape Vert Peninsula that lies north east of Senegal's capital Dakar, the lake's unusual appearance is caused by a salt-loving green micro alga called Dunaliella Salina that resides in the lake, known for its high concentration of the mineral.

As you can imagine, very few organisms can survive in such highly saline conditions. The only reason this single-celled organism is able to do so, is because of its ability to create large amounts of Beta-Carotene, that helps protect it against the intense light that reflects off the salt and also gives the algae its dark pink hue.

While the color may make the lake appear eerie and unsafe, the micro organism is safe not only to swim amidst, but also, consume - Good news for the locals that are constantly wading in to mine the salt. In fact, the algae are so rich in antioxidants that they are often harvested and used in cosmetics and dietary supplements.

This is not the only tiny organism able to transform water hues. In San Diego,CA and many other parts of the world, high concentrations of phytoplankton during certain time of the year, help turn the ocean waters a bright red during the day and an even cooler bioluminescent blue, at night!

Resources:amusingplanet.com, dailymail.co.uk

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Geography
290 Comments
  • jazmine2008
    jazmine2008about 1 year
    i don't think that's really safe or good for the environment but i do like the color pink. pink and black are my fav colors#please follow#
    • lunar3clipse
      lunar3clipseover 1 year
      Chemicals bad. Relief to be nature
      • unicornlover200
        unicornlover200about 3 years
        I WILL VISIT pink is my fav color l would love to see it 💖
        • strulovichover 3 years
          this is the most coolest lake in the UNIVERSE!!!!!! I wish i could see that in real life
          • jackey chanover 3 years
            cool
            • 😀about 4 years
              more Fact please ,😤
              • Coolover 4 years
                Cool
                • lovealmost 5 years
                  thanks for a school project
                  • random personalmost 5 years
                    can i swim in it...?
                    • jabout 5 years
                      cool