Hutt Lagoon is a massive lake in Western Australia that gets its pink color from a particular type of algae — Dunaliella salina — that grows in the water. The lagoon contains the world’s largest microalgae production plant, where the algae is farmed for its beta-carotene and then used as a food‑coloring agent and source of Vitamin A in other products. Hutt Lagoon also provides a commercial supply of Artemia brine shrimp, a specialty feed used by prawn and fish farmers and in the aquarium fish trade.