You're talking about Florida.
On land, you have bugs, lizards, frogs, and SNAKES!!!
In the ocean, on either coast, you have sharks and barracuda. They are always there, but sharks are usually not seen unless you're diving an offshore reef. I've lived in Florida most of my life and I have NEVER gone diving or snorkling anywhere without seeing a barracuda...usually close enough to reach out and touch.
But truthfully, jellyfish, Portuguese Man-O-War, and rip currents are much more of a problem -- as are other fish like bluefish and king mackerel when they are running. They actually hurt people; sharks rarely do, and barracuda almost never do.
Yes there are shark sightings, and don't ever take your daughter for a helicopter/airplane ride along the beaches, because she'll never set foot in the ocean again.
But tens of millions of bathers enter Florida waters every year with almost no incidents. You are MUCH safer in the ocean than on the highway.
And if you want waves, go to the Atlantic Coast.