The pink colour of the lake is caused by the proliferation of the salt-loving (halophilic) green algae Dunaliella salina.
This microscopic algae produces a red pigment to protect itself and adapt to the salty environment, thus turning the lake pink.
As the salinity in the lake, which contains about 400 grams of salt per litre, decreases, the algae in question becomes unable to produce pigment and the lake begins to turn green.
