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Lake Hillier, Australia Pink lake? The source of the colour is still unknown but scientists believe that it is caused by the presence of red halophilic bacteria in the salt crust! Lake Hillier has no known adverse effects on humans so go ahead and swim in it!

Lake Hillier, Australia Pink lake? The source of the colour is still unknown but scientists believe that it is caused by the presence of red halophilic bacteria in the salt crust! Lake Hillier has no known adverse effects on humans so go ahead and swim in it!