Off the coast of Western Australia sits a 600-meter pool of vibrant bubblegum pink water, so jarring it looks like an industrial dye spill. But it is completely natural, and scooped into a glass, the water stays pink.

This episode dives into the bizarre science, dark history, and recent environmental twist of Lake Hillier. We trace its discovery, the doomed attempts to exploit it, the microbial war that creates its color, and why even the most extreme natural wonders can prove surprisingly fragile.

• Why the lake's permanent pink isn't an optical illusion, the color is physically suspended in the hyper-saline water
• How Matthew Flinders' 1802 expedition found it and named it after crewman William Hillier, who died of dysentery on the voyage
• The Andrews family's ill-fated 1889 salt-mining venture that collapsed becaus ...