From the Dec. 21, 2013 Smarter Travel "best Beach Destinations in the Florida Keys" by Julianne Lowell.
1. JOHN PENNECAMP CORAL REEF STATE PARK-- Key Largo. Best for diving. SS Benwood, World War II wreck. Christ of the Abyss Statue, 25 feet deep.
2. FORT ZACHARY TAYLOR HISTORIC STATE PARK-- Key West. Best beach for snorkeling. Where the Gulf meets the Atlantic.
3. CALUSA BEACH, Bahia Honda State Park, Big Pine Key, Gulf side. Best for family fun.