Believe it or not, one of the best diving sites in the world is located just a few hundred miles south of the Texas/Louisiana border. The Flower Gardens, as they're known, are an oasis of coral only 60 feet below the surface of the water, surrounded by oil rigs and the much deeper waters of the Gulf. Plenty of dive shops in town can arrange trips out there, but Gigglin' Marlin is one of the few that will certify you, rent you gear and make sure you have the most out-of-this world experience in the process. The staff is extremely helpful and accommodating, whether you're trying to learn to dive, want to rent or buy dive gear, or need your tanks or regulator serviced. They've also got a full-blown travel service booking trips to the Flower Gardens, wreck dives, the Tortugas and more, and an indoor heated saltwater pool for dive instruction and beginners' swim lessons.