A marine biologist from the Smithsonian Institution's National Museum of Natural History leads this astonishing expedition to the Galapagos islands, a world that is still relatively new and evolving. Descending to depths of 3,000 feet, the scientists find a window into the past and a frontier for exploration. The mission: collect rare and unusual species for study at the Smithsonian and elsewhere--all part of a real-life exploration that will discover what is believed to be more than a dozen new species of marine life.