<Tr> <Th> Surface area </Th> <Td> 15 ha (37 acres) </Td> </Tr> <Tr> <Th> References </Th> <Td> </Td> </Tr> <P> Lake Hillier is a saline lake on the edge of Middle Island, the largest of the islands and islets that make up the Recherche Archipelago in the Goldfields - Esperance region, off the south coast of Western Australia . It is particularly notable for its pink colour . A long and thin shore divides the Southern Ocean from the lake . </P> <P> Lake Hillier is about 600 metres (2,000 ft) in length by about 250 m (820 ft) in width . The lake is surrounded by a rim of sand and a dense woodland of paperbark and eucalyptus trees with a narrow strip of sand dunes covered by vegetation separating its northern edge from the northern coast of Middle Island . The most notable feature of the lake is its pink, vibrant colour . The vibrant colour is permanent, and does not alter when the water is taken in a container . The pink colour is considered to be due to the presence of the organism Dunaliella salina . The Extreme Microbiome Project, part of the Association of Biomolecular Resource Facilities (ABRF), Metagenomics Research Group (MGRG), has performed a metagenomic analysis on the lake to find Dunaliella as well as Salinibacter ruber, Dechloromonas aromatica, and a few species of the Archaea . Air is the best mode of transportation for viewing the lake . At one point in its history the lake was used to collect salt . </P>

Where is the pink lake located in australia