Everglade airboat ride

We went on an airboat ride into the Everglades. We had a choice of a mangrove tour or a grassland tour, we took the grassland option. Alligators were everywhere, some were 12 foot 600 pounders. They seemed to ignore us. The airboats had huge V-8 engines with propellers like a plane, they were really loud, but could travel on 6" of water .