Pink Lake is a salt lake in the Goldfields-Esperance region of Western Australia. It lies about 3 kilometres (2 mi) west of Esperance and is bounded to the East by the South Coast Highway.The lake is not always pink but the distinctive colour of the water changes as a result of green alga Dunaliella salina, halobacterium Halobacteria cutirubrum, and/or high concentration of brine prawn.

This lake is famous worldwide, at least its pictures are quite widespread on the Internet. This is not surprising, as this natural phenomenon is considered a paradox and looks like an unearthly object.

More Info: en.wikipedia.org