Calypso's search for the Britannic: For 70 years, the sudden sinking of the mighty British ship Britannic, larger than her sister ship Titanic, has been shrouded in mystery. Jacques Cousteau reveals the full story of November 21, 1916 when, on her 6th journey as a hospital ship, Britannic exploded and sank into the Aegean Sea. With recollections of a survivor, then a young nurse, Cousteau and crew uncover whether the vessel was mined or torpedoed, if it secretly carried British troops, and how a single mine or torpedo could sink a supposedly impregnable ship. Diving for Roman plunder: More than a century before the birth of Christ, a storm sank a Roman galley laden with plundered Greek treasures. Join Captain Cousteau and the Calypso crew in retrieving art objects from 200 feet beneath the surface, including two rare bronze statues. But this is more than an art recovery mission: an archaeologist seeks evidence supporting a theory that the Greeks may have held the key to the Industrial Revolution and modern computer technology.