Colombia: Pink sea
El Salar de Galerazamba, otherwise known as Colombia's Pink Sea, is a magical looking place, and although it looks like it came from a fairy tale, it's real purpose isn't so sweet.
The sea is actually a salt mine and the bright pink hue is caused by colorful salt-loving microbes which create pigmented protein to absorb the sun's energy.The bright pink color is only visible for two months out of the year in February and March when water levels are low causing a high concentration of microbes. During the rest of the year, the water is a rich shade of blue like on the other side of the quarry. Despite the high concentration of salt, the water is harmless and you are welcome to swim in it.
El Salar de Galerazamba is located about an hour Northeast of Cartagena on the coast of Colombia within the small pueblo of Galerazamba. The town is accessible from Cartagena via multiple buslines and it takes about an hour to get there.