National GeographicJul 30, 2026In southern Italy's Tremiti Islands, diving helps protect the seaOff the coast of Puglia, the Tremiti Islands offer an underwater world of natural and archaeological treasures. One local is determined to preserve them.14 things in this storyMarlin TremitiPlaceOffers excursions, courses, and scenic boat tours.Baia dei PagliaiSightFeatures towering limestone shaped like haystacks.Cala degli InglesiSightSite where the steamship Lombardo sank in 1864.Cala delle RondinelleSightNamed for the swallows that nest here each spring.Lucio Dalla's retreatSightOnce owned by the influential singer-songwriter.Laboratory of the SeaPlaceScientific research arm funded by Marlin Tremiti.San Domino Posidonia FestivalFestivalSummer event with talks and underwater photographers.Project 3DM/ITPlaceModular structures to encourage marine regeneration.Touring Club Italiano (TCI) outpostHotelAccommodation on San Domino island.Coastal pathTrailWell-maintained trail on San Domino island.Cala MatanoSightTiny cove cradled by pines and limestone cliffs.Punta del DiavoloSightWesternmost tip of San Domino island.SagittarioPlaceEnrico Massone's boat for trips around the archipelago.Grotta del Bue MarinoSightRead the full piece at National Geographic →
