This National Geographic exclusive, narrated by Martin Sheen, highlights the century's most celebrated underwater expedition. After years of research and exploration, Dr. Robert Ballard of Woods Hole Oceanographic Institution and a team of researchers lcoated the final resting place of the ill-fated S.S. Titanic, nearly two-and-one half miles beneath the surface of the icy Atlantic. Armed with sophisticated equipment, including the submersible deep-sea-craft Alvin and a myraid of remote video cameras, Dr. Ballard and his team became the first humans to see and photograph the Titanic since its sinking more than 85 years ago. Now the breathtaking footage of this exploration, as well as the intriguing story of the ship's discovery is presented in its entirety.