Hutt Lagoon aka the pink lake

Yallabatharra, Western Australia
Canon EOS 50D, 10-22mm @10mm, 1/250 sec, f/8, ISO100

A number of years ago, while travelling in the state of Victoria, we visited a pink lake, and were sorely disappointed to find it didn't have any pink colour at all.
While travelling to Kalbarri a couple of weeks ago for a holiday, we stopped at Hutt Lagoon, which is near Port Gregory, to have a look at another pink lake. This time we were not disappointed - the colour was amazing to look at.

The colour is due to a caroteinoid-producing algae called dunaliella salina, which exists in salty water, and produces beta-carotene. A BASF processing plant on the other side of the lake harvests the beta-carotene, which is used in cosmetics and in dietary supplements, as it is a food-colouring agent and a source of vitamin A.

If you are ever in the area, it is worthwhile having a look - although the colour does vary seasonally, and is dependent on the sun lighting.