The salt lake of the Westgate Park in Melbourne, Australia, has attracted many visitors after it turned a vivid pink. /VCG Photo 

Though at first it looks like toxic pollution, the change in the lake's color is actually due to a natural phenomenon. /VCG Photo 

Due to the warm temperature and extreme salt levels, green algae at the bottom of the lake multiplied quickly, producing a pink pigment during its photosynthetic process. /VCG Photo

The two photos contrast the salt lake on normal days and what was captured on March 4. /TripAdvisor (L), VCG (R)