For those who like to imagine they're on a desert island, take the Jetty Boat to St. Jo Island.
An uninhabited island, St. Jo is located just north of Port Aransas. The island is approximately 28 miles long and is less than 2 miles wide at its widest point. It's a natural haven for fishermen and beach lovers. The Jetty Boat at Fisherman's Wharf is the only passenger ferry to St. Jo Island, leaves frequently. Be sure to take provisions along. Fisherman's Wharf is a great resource for this destination.