The Fla keyes are bigger higher then these little barrier islands are they? Maybe I am wrong, I am thinking the fla barrier islands are just like the little Texas barrier islands which get wiped out and cut to pieces over time.
are they=aren't they
Not really, unless you want to say an area maybe a foot higher over sea level makes a big difference. Route 1 is the only road in and out of the keys (aside from Card Sound Road which isn't available until the Upper Keys and still dumps you off on Route 1). You can drive down Rt. 1 during good thunderstorms and have the water over the road.