6) Lake Hillier

·         Lake Hillier – Australia:

Lake Hillier is a pink-colored lake on Middle Island, the largest of the islands and islets that make up the Recherche Archipelago, Western Australia. From above the lake appears a solid bubble gum pink. It is such a significant distinguishing feature of the archipelago that air passengers often crane their necks to take a glimpse of it. The cause for the color is still not clear, but speculations indicate that the color is due to a dye released by the bacteria that reside in it.