Pink lakes are bodies of water that appear pink due to the presence of certain microorganisms, algae, and high salt concentrations. These organisms, such as Dunaliella salina, produce pigments that give the water its distinctive hue. The lakes are often found in arid regions where evaporation rates are high, leading to increased salinity. One of the most famous pink lakes is Lake Hillier in Australia, known for its vibrant color and unique ecosystem. Other notable examples include Laguna Colorada in Bolivia and Salinas de Torrevieja in Spain. These lakes attract tourists and researchers alike, fascinated by their unusual appearance.