Salt Evaporation Ponds
San Francisco, California, USA
This Overview captures salt evaporation ponds in San Francisco, California, USA. Here, water is channeled into these massive basins where it begins a transformation into brines. Over five years, the brines evaporate, concentrate, and travel several miles before they are collected as pure salt crystals. The massive ponds get their vibrant red colors from algae Dunaliella, a particular species of algae that thrives in extremely salty water.