Crab Island is a submerged sandbar in Choctawhatchee Bay, about five minutes by boat from Destin Harbor, where 1 to 4 feet of turquoise water make it Destin’s most popular boating destination. You reach it only by boat, shuttle, or tour, never on foot or by swimming. Once anchored, expect floating vendors, live music, and hundreds of boats tied together during peak season. Destin welcomes more than 4.5 million...