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Lake Natron, Tanzania by udphoto: Arguably the most caustic lake in the world, this shallow salt lake is fed by the Southern Ewaso Ng'iro River and also by mineral-rich hot springs. High levels of evaporation leave concentrations of salt and sodoium carbonate (natron). The red color is due to spiriulina, a blue-green algae with red pigments. #Photography #Lake_Natron #Tanzania
Senegal's Lake Retba, or as the French refer to it Lac Rose, is pinker than any milkshake. Experts say the lake gives off its pink hue due to cyanobacteria, a harmless halophilic bacteria found in the water. Lake Retba has a high salt content, much like that of the Dead Sea, allowing people to float effortlessly in the massive pink water.
Gippsland Lakes, Australia. An unusually high concentration of Noctiluca scintillans, a bioluminescent microorganism, turned the water a bright, glowing, ethereal blue.