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Old 04/12/2017, 06:55 PM   #4279
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Join Date: Mar 2002
Location: Mountain View, CA, USA
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I'd guess that the second picture was cyanobacteria or dinoflagellates, but I'm not good at id'ing microbes. Dinoflagellates should show a flagellum somewhere, if the focus is at the appropriate plane. I didn't see any in your images, but there's the pesky depth of field issue.

Jonathan Bertoni
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