The Mysterious Pink Lake


Pink LakeThe Australian continent is well known for its magnificent natural wonders, and exotic landscapes. As untamed as it may seem, Australia is actually one of the most urbanized countries, which is notorious for the tourist attractions located in Melbourne and Sydney.

The Hillier Lake is considered one of Australia’s natural wonders, and a place of mystery. The Ulunu “Sacred Stone”, the Great Coral Reef, the Pink Lake and the Eucalyptus forest are considered the four great natural treasures of Australia. The most interesting thing about the lake is, as the name conveys, the beautiful pink color for which scientists have yet to find an explanation. The strange thing about the water is that it preserves its color even after It is bottled. Although the distinctive color of the water is usually pink, it might also shift from red to shades of darker pink, depending on the quantity of Dunaliella salina.

There have been many theories about the lake’s color, but only two seem to have a stronger basis. The first one stated that the coloration is determined by the presence of a bacteria or alga which changes its form when in contact to the sun, however after thorough tests no sign of alga or bacteria were discovered. The only unusual thing was the high salinity level, which led to the second theory. A small number of scientists considered that the salt in the water reflects the sunlight in a way that the lake becomes pink, creating an optical illusion. This theory however fails to explain why the water remains pink even after it is stored in bottles.

Both theories, however, played an important part in understanding why the Hillier Lake is the way it is. Recent studies show that the green alga Dunaliella salina, the halobacterium Halobacteria cutirubrum and the high concentration of brine pawn are to blame. Once the salinity level of the lake water reaches a certain value, given the proper light conditions , the alga will begin to store the red pigment beta carotene. The color of the lake will result from the perfect balance of H cutirubrum and D.Salina.

Whatever the explanation, the facts are clear, the lake is extremely beautiful, and you should definitely add it to your to do list, if ever in Australia. Not only is the lake itself spectacular, but the bird life is also beautiful. The lake has been marked as an Important Bird Area because it supports a significant amount of Hooded Plovers and Banded Stilts.

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