There are many things that go into a great diver - good training, the right equipment and experience. The building of experience has always been number one with us at Tiedemann's. Helping divers to get out and dive is one of the things we do best. We offer a large selection of specialty courses. We offer local beach and wreck dives through our dive club, the Long Island Groupers. We offer a complete dive travel service. We offer escorted dive trips.