Carrabelle Beach is most of the way from Mexico Beach to Apalachicola. IT's beautifully open, with stark white sands. There aren't many shells, but other invertebrates are pretty common. We saw starfish, horseshoe crabs, and a shrimp.
During world war 2, Camp Gordon Johnston used this beach for amphibious training, including for D-Day. Other than a marker and a museum, there's not much left of the camp.