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Two colourful salt lakes flank the northwestern edge of the seaside city of Torrevieja on Spain’s Costa Blanca. Together, they form a nature reserve called Las Salinas de Torrevieja. One lake, in particular, stands out, as its eye-catching 'bubblegum' pink colour overshadows its green-tinted neighbour.

The sight is caused by the work of bacteria and algae. Halobacterium (also known as “salt bacterium”) thrives in salty places, as does a micro-algae called Dunaliella salina. These are the two magical ingredients that concoct the lake’s bizarre pinky hue. Despite its funky colour, the water is perfectly fine, though it can get rather smelly.

Torrevieja relies on its salt lakes. People have been collecting the mineral from the waters for centuries. In the early 19th century, they officially became a hub for Spain’s salt industry. In addition to boosting the city’s economy, the lakes also act as a natural spa. Supposedly, the sludge of mud and salt at the bottom have healing properties that can relieve common skin and respiratory ailments. The water’s high salt concentration makes it a fun place to relax and enjoy floating around with ease.

Flamingos, much like the local people, also frequent the pink lake. Feasting upon the algae-filled shrimp that live there giving their feathers that characteristic rosy tint that almost matches the water.