Port Gregory, Western Australia.

The Pink Lake gets its spectacular colour from the algal blooms of the microscopic algae Dunaliella salina. Dunaliella salina algae bloom when conditions are salty, sunny and warm, as found in the Hutt Lagoon near Port Gregory.
The algae produce carotenoids to protect themselves from these harsh conditions and the carotenoids are what gives the lakes their unusual and beautiful colours.

The algae is cultivated and harvested in the Hutt Lagoon and the natural mix of carotenoids (including beta and alpha carotene, cryptoxanthin, lutein and zeaxanthin) are extracted.
These are then sold world-wide for use in dietary supplements, aquaculture feeds and as a natural food colouring.