Welcome to Padre Island National Seashore
The island is home to all the coastal wildlife found elsewhere along the coast and then some. There's excellent birding, of course, plus numerous coyotes, white-tailed deer, sea turtles and more. It offers a delightful day's outing for anyone who wants to try a little natural beauty, or a major adventure for anyone who wants to escape civilization.
The excellent park map is free at the entrance. Besides showing the island in great detail, it has good information about flora, fauna and various activities such as fishing and beachcombing.