(Source: panoplex)
Hutt Lagoon is a salt lake in Western Australia with a large population of Dunaliella salina algae giving the distinctive red and pink coloration. To survive, these organisms have high concentrations of β-carotene to protect against the intense light, and high concentrations of glycerol to provide protection against osmotic pressure. This salt lake is currently used as a Dunaliella salina algae farm for use in cosmetics and dietary supplements.
Photographs by Steve Back
From fastcodesign.com