Pink lake (Hiller Lake ). The Lake Hillier is one of the natural wonder of Australia. It can only be seen from the sky since it is prohibited to walk on Middle Island in Western Australia. The reason for this permanent pink color remains undetermined but the best scientific hypothesis seems to linked to Dunaliella Salina, a green microalgae, and to halobacteria in the water.
Senegal's Lake Retba, or as the French refer to it Lac Rose, is pinker than any milkshake. Experts say the lake gives off its pink hue due to cyanobacteria, a harmless halophilic bacteria found in the water. Lake Retba has a high salt content, much like that of the Dead Sea, allowing people to float effortlessly in the massive pink water.