Middle Island Sinkhole - Thunder Bay National Marine Sanctuary - August 15-16, 2006

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Uploaded by on Sep 15, 2009

The video shows purple cyanobacterial mats thriving in a groundwater influenced environment and a major source of groundwater outflow from an area called the 'alcove' by project researchers. Video provided by the Thunder Bay National Marine Sanctuary - http://thunderbay.noaa.gov and the Great Lakes Environmental Research Laboratory - http://www.glerl.noaa.gov

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