The red tides are a naturally occurring event that have become exacerbated by nutrient runoff from the Kissimmee R/Lake Okeechobee watershed. These red tides are becoming more extensive and longer lasting.
There are two distinct though connected toxic bloom problems in Florida. 1) large toxic blue green algal blooms in Lake Okeechobee from ag runoff into the Kissimmee River. These toxic blooms are released to downstream coastal estuaries, and 2) the red tides you're seeing along the Gulf coast that are killing everything from minnows to whale sharks. The Okeechobee nutrient/BGA problem is thought to contribute nutrients that enhance red tide blooms. Both blooms are killing fish either via toxins, oxygen depletion or both. Pretty much there are lots of dead animals and even sick people from Lake Okeechobee all the way into the Gulf and to Atlantic coast estuaries. That's aside from runoff problems affecting the Everglades.
Florida has to realize that you cannot have agriculture, or at least not fertilizer-intensive crops like sugar cane, in the Everglades watershed. The system is too sensitive to nutrient enrichment. Until Florida realizes this and does something major about it, then the problem will just get worse and worse. Yes, tourism will suffer big time. It already is. You're complaining about it.