I’m not sure how helpful this is but some researchers have discovered that sometimes plankton, algae and other microbes get trapped between layers of ocean water moving in different directions.

Read the full article:
red tide research story

In the past we’ve heard from the Florida Government, Mote Marine, START and other government and semi-government entities that “There is no proof that red tide is caused by nutrient pollution. This site provided the evidence and other groups brought to meeting after meeting held by Mote Marine, FWC and others. finally after a few years these organizations and government entities stopped trying to say there was no link.

Several studies have come out recently proving the relations between nutrients like fertilizers from homeowners lawns, golf courses and those oh so important medians between roads (they really need to be fertilized?)
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