This book is one of the first to tell the story of the UDT -- the Underwater Demolition Teams first organized in World War II. Their job was strictly one of swimming into enemy beach areas and blowing up obstacles to amphibious invasion forces. At Normandy, Saipan, Pelelieu, Leyte Gulf and Okinawa they paved the way, saving hundreds of lives. How men are trained in UDT units today is explained and the future of SCUBA, skin diving and sea exploration are also touched upon. A quick and authoritative look at an important new form of sea warfare.