Siesta Beach, FL
Credit: Thomas Winz / Getty Image

"Perfect for swimming," is Leatherman's succinct description of this Sarasota County stretch. "Absolutely perfect." The water can reach 89 degrees in late summer and remains clear year round. At the Great International White Sand Beach Challenge in 1987, Siesta was honored for having the world's whitest and finest sand.

"It's like powdered sugar," Leatherman says. "You want to feel it between your toes."