Hutt Lagoon’s placing pink colour is because of algae that live in the water, Dunaliella salina. When subjected to sunlight, the algae makes beta-carotene, the crimson pigment located in carrots and also other vegies. The pink colour on the lakes is attributable to a kind of algae termed Dunaliella salina, https://jamesu517sss3.plpwiki.com/user