Mysterious Pink Lake In Australia - Lake Hillier

Lake Hillier is a bubble-gum-pink lake on the edge of Recherché Archipelago’s largest island in Western Australia. 

The tiny lake only spans about 600 meters wide but its rose pink colour in unmistakable. The reason for the lake's color is still under investigation, and so far no one has come up with a reasonable explanation. However, the most probable explanation according to some scientists involves the low nutrient concentrations and growth of Dunaliella salina & Halobacterium. The island and lake are thought to have been first charted by the Flinders expedition in 1802.

Presumably their only use for this pink lake is to bottle and export it as treatment for non-Australian problems like upset stomachs, nausea, heartburn, diarrhea, and indigestion. Similarly another pink lake named 'Lake Retba' is located in Senegal.