What Caused This Lake To Turn Pink?

You’d be forgiven for thinking that these photos have been tampered with, but the waters of Lake Hillier in Western Australia really are bright pink. Experts believe that the lake got its colour from the ‘high salinity combined with the presence of a salt-loving algae species known as Dunaliella salina and pink bacteria known as halobacteria.’ Whatever the reason, there is no doubting that Hillier is one of the most unique looking lakes on the planet. The fact that it is located on Middle Island, a small island off the coast of south-west Australia, makes it all the more mysterious.