image035 (by Moist_von_Lipwig)
The Rio Caño Cristales - most colorful river (caused by algae and moss seen through the water), Colombia.
These photos of the Rotten Sea in Crimea by Sergey Anashkevych capture the eerie beauty of its red water. The water has turned red because of a reaction between algae and the excessive saline from its location in an abandoned salt mine.
Perpetual Calendar, 2013 | by Arina Pozdnyak