File:Salt evaporation ponds on San Francisco Bay.jpg

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Salt evaporation ponds in the San Francisco Bay

Summary

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Description Salt evaporation ponds formed by salt water impounded within levees in former tidelands on the shores of San Francisco Bay. There are many of these ponds surrounding the South Bay. As the water evaporates, micro-organisms of several kinds come to predominate and change the color of the water. First come green algae, then darkening as orange brine shrimp predominate. Finally red predominates as dunaliella salina, a micro-algae containing high amounts of beta-carotene (itself with high commercial value), predominates. Other organisms can also change the hue of each pond. Colors include red, green, orange and yellow, brown and blue. Finally, when the water is evaporated, the white of salt alone remains. This is harvested with machines, and the process repeats.
Date Taken on 31 October 2009, 18:58
Source 2009-10_31_BOS-SFO_398
Author Doc Searls from Santa Barbara, USA
Object location37° 28′ 50.22″ N, 122° 01′ 28.46″ W Kartographer map based on OpenStreetMap.View this and other nearby images on: OpenStreetMapinfo

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w:en:Creative Commons
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This image was originally posted to Flickr by dsearls at https://flickr.com/photos/52614599@N00/4096329287. It was reviewed on 14 May 2020 by FlickreviewR 2 and was confirmed to be licensed under the terms of the cc-by-2.0.

14 May 2020

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current19:15, 14 May 2020Thumbnail for version as of 19:15, 14 May 20203,504 × 2,336 (5.4 MB)Evrik (talk | contribs)Transferred from Flickr via #flickr2commons

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