Salt ponds in the San Francisco Bay
The unusual spectacle can be seen in the San Francisco Bay. When viewed from a distance, the picture resembles the Dutch tulip fields, although vegetation place has an indirect relationship. In fact, the bright spots is nothing but salt ponds that are used for the extraction of salt from sea water.
In artificial ponds water evaporates and leaves only a crystallized salt, colored algae and micro-organisms, and its hue depending on the degree of salinity
Ponds with low and medium salinity have a greenish or pinkish color, and the higher the salinity, the more water a reddish pigment
Also, the weather also affects the color of the water body. In the pouring rain ponds palette changes, and sometimes does become transparent.