Latitude: 24.708 Longitude: -81.116
At the southern tip of Marathon Key is one of the longest bridges in the U.S. I kayaked beneath the bridge which runs parallel with the old highway, now a fishing pier and pedestrian/bike access to Pigeon Key. There is free parking at either end of the bridge, and on a stroll you will see all sorts of birds and fish. I still have an image of the manta ray I saw as a kid, as it passed under the bridge in the clear shallow water.