The stuff in the picture looks to me similar to some of the surface films produced by a specie that forms 'floating' blooms because it appears to lack fine strands and is against the downwind bank/shoreline. Some of them are weakly mobile and can migrate up and down in the water column. When at the surface a gentle wind moves them to the leeward or downwind side.

Last edited by Bill Cody; 12/16/17 09:05 PM.
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