Beautiful salt evaporation ponds are located in San Francisco Bay. The ponds are commonly separated by levees. Water in these ponds is brine which is taken from sea to produce salt. Ponds have different colors to indicate the salinity of each pond. Green ponds where green algae are predominant are in low to mid-salinity. Red ponds have higher salinity with red algae. Orange ponds are reported to have the highest salinity. In addition to algae called Dunaliella Salina, they can use micro-organisms and other bacteria such as Stichococcus which can change their hues as the salinity of the pond increases. Tourists around the world are attracted by these largest salt evaporation ponds. They can hire a helicopter to have an overview of salt ponds in the sunshine.
Salt evaporation ponds are situated in San Francisco Bay
In low to mid-salinity ponds, green algae are predominant
In middle to high salinity ponds, red algae are popular
Millions of tiny brine shrimps create an orange cast in mid-salinity ponds
The color tells how much salt there is left in water
The ponds are commonly separated by levees
The ponds provide a productive resting and feeding ground for many species of waterbirds
Salt evaporation ponds are man-made shallow ponds designed to produce salts from sea water or other brines
San Francisco Bay salt ponds in the United States are operated by Cargill
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