Accredited by the Professional Association of Diving Instructors as a 5-Star Instructor Development Center, Charleston Scuba's experienced staff leads aqueous adventures at deep-sea destinations. A free shuttle bus service delivers the soon-to-be-immersed to the Ashley Marina, from where they are taxied to their chosen diving domain aboard the Trinity. There are seven reefs and ledges to explore including the Indigo Ledges, a natural reef lined with soft corals, sponges, and crustaceans, and the Anchor Ledges, a novice-friendly, 60-feet dive that serves as a venue for meeting friendly tropical fish and their distrustful lobster sidekicks (The Gardens, 105 Foot Ledges, and Turtle Ledges are not included in this Groupon.) Eric's Double Ledges is a palace of five-feet ledges with arches and overhangs, providing a majestic habitat for large grouper, nurse sharks, and the eponymous Eric, who waves regally at passing divers and rides atop a giant jewel-encrusted tortoise. All charters meet at Charleston Scuba at 7:00 am to prepare for their expeditions.