Southwest Florida has been facing two harmful algal blooms: the red tide bloom, which stretches from Naples to Sarasota, has been impacting coastal waters since last fall. And, the toxic blue-green algae bloom that started in July in Lake Okeechobee and has worked its way down the Caloosahatchee River and into the estuary. Now, marine scientists say a third kind of algae called Oscillatoria showing up around where the two meet, being fueled by nutrients provided by decomposing marine life . And,