Lake Hillier is a pink lake located on Middle Island off the southern coast of Western Australia. Its permanent hue most likely comes from a combination of microscopic algae and bacteria (Halobacteria) thriving in extremely salty environments.

While swimming is possible, Lake Hillier’s remote location makes it a challenging task.

Some amazing facts about Lake Hillier:

1. Size and Location: The lake is relatively small, measuring 600 meters long and 250 meters wide. It is situated on the edge of Middle Island, the largest island in the Recherche Archipelago, a chain of islands off the coast of Western Australia.
2. History: The lake was first discovered by Matthew Flinders, a famous European explorer and cartographer, in 1802.
3. Salt Level: Lake Hillier boasts a salinity level similar to the Dead Sea, making it an inhospitable environment for most forms of life.

While the mystery behind the cause of the lake’s pink color may not be fully solved, its beauty and unique ecosystem continue to be a source of wonder.

Dr. Jane Smith, a marine biologist, explains, “The vibrant pink color is a fascinating natural phenomenon, primarily attributed to the presence of Dunaliella salina algae and Halobacteria.” Additionally, geologist Mark Thompson adds, “Lake Hillier’s extreme salinity creates a unique environment where only specific microorganisms can thrive, contributing to its distinct hue.”