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A rare and unusual specimen of algae preserved in clear chalcedony. Originally it would have been growing in silica-rich run-off from geothermal hot springs. Kaueranga Valley, Thames
Lake Menomin in Menomonie Wisconsin was overwhelmed with a blue-green algae bloom that caused the water to become toxic.
these are tracks left by snails in the algae on a shed door. view large to see squiggles within squiggles at bottom right
There was a very small freshwater creek entering the ocean at this point.
The entire course of the creek's journey over the rocks to the sea was carpeted in this interesting algae.
Photographed at Salt Point State Park, Sonoma County, California