Captiva Island - a small paradise off of the west coast of Florida. Only accessible by driving from Sanibel Island, connected to the mainland by a bridge. Captiva parrallels Fort Myers on the coast, and is also near Naples, FL.
Captiva's main attraction is South Seas plantation, a resort/yacht club that features beautiful white beaches, dozens of pools, and plenty of places to get sloshed and eat fish.
Highly recommended as one of the more beautiful locations in Florida to visit or vacation.