Gallipoli's coastline became a maritime crossroads in the fifth century BCE when Greek settlers recognized the natural harbor's strategic position between the Adriatic and Ionian seas. The limestone peninsula, connected to the mainland by a seventeenth-century bridge, sheltered fleets that controlled grain routes to Athens and later served Byzantine, Norman, and Aragonese navies. By the sixteenth century, the old town's bastions and watchtowers monitored approaches from both land and water, a defensive architecture that remains visible from the sea today. The Ionian shore stretches twelve kilometers south from Porto di Gallipoli, a succession of limestone cliffs, sea caves, and sandy inlets that commercial ferries cannot access. Sant'Andrea Island, two kilometers offshore, supports one of the Mediterranean's few remaining colonies of rare Corsican gulls and Audouin's gulls, protected since 2006 under regional conservation ordinances. The island's eastern cliffs drop fifteen meters into water that stays between twenty-two and twenty-six degrees Celsius from June through September, creating conditions that support grouper, octopus, and schools of bream. Private boat tour Gallipoli operators run skippered charters from the harbor's eastern dock, departing daily between 09:00 and 20:00. Most vessels are six- to eight-meter open-deck motorboats, equipped with swim ladders, snorkeling gear, and sun canopies. Standard itineraries cover the southern coast, passing Punta della Suina and Baia Verde before reaching the marine reserve boundaries at Punta Pizzo. Water clarity peaks in morning hours, when visibility extends beyond twelve meters. Gallipoli boat charters typically include two to three swim stops, with durations ranging from three to five hours depending on route and weather. Operators provide snorkeling equipment, fresh water showers, and onboard aperitifs or seafood platters sourced from the harbor's morning fish market. The Sant'Andrea island route adds forty minutes to standard coastal itineraries, circling the reserve's perimeter without landing, as the island itself remains closed to visitors. Sunset departures between 17:30 and 18:00 align with golden-hour light that illuminates the old town's baroque facades and the cathedral's majolica dome from offshore perspectives unavailable to land-based viewpoints.