Dr. Greg McCullough
I took the pictures below late in the afternoon of the 17th of August, when first the water turned a deep forest green, and then a mess of foamy sludge appeared on the shores at Victoria Beach – a cottage community on a peninsula separating Traverse Bay from the rest of the South Basin to the west. The first group of pictures below were taken late in the afternoon of the 17th, towards the end of a period of near calm that had persisted since the previous afternoon. Air temperatures peaked around 28-29C on that and the previous day, under sunny skies. Likely cyanobacteria – bluegreen algae – rose to the surface – to maximize their exposure to light for photosynthesis – during the period of calm. Then shoreward drift of the surface layer, pushed by the rising wind, would have done the rest.
Larger images can be found on Dr. McCullough's page HERE.
A video showing the heavy wash of the waves through the sludge is is located below.