Walking shots inside new found tunnel under Louisbourg fortifications, of scuba divers walking towards and away from camera, of walls of tunnel, water in tunnel. Long sequence of underwater shots (with blimped camera) showing bottom of ocean at 30 to 40 feet, scuba divers gliding back and forth, one with flounder inpaled on end of spear, another with two small starfishes, showing fishes, marine vegetation, schools of fish. LS of bay, TILT DOWN to man and woman examining old time anchor. Underwater TRAVELLING SHOT through seaweeds and turbid water. Shots of diver falling backwards into water from barge.