Some halophiles are colourful microbes like purple sulphur microbes, the reddy/orange Salinibacter ruber and purple-coloured algae called Dunaliella salina. The combo of those microbes, And maybe some Other people, describes the pink colour of your lake. (When the science driving the pink drinking water at pink Lake Hillier pursuits you, https://douglasi284kkk0.idblogz.com/profile