Waterways in Florida

If you come down to Florida, take care in our waterways.  The only place I'd swim is a pool.  You can see into the water.  On the coast, you have to worry about sharks, jellyfish, and riptides.  In our freshwater areas, you have to worry about alligators, bacteria and amoebas.  I would add man made waterways to that list.  We just had a story about a child getting killed by a gator at a Disney resort.  They had a man made lagoon.  After the child was taken, they did a search and have found 5 gators so far.  I don't even know if they found the one that did it.