Maritime expert Dr. Robert Ballard, founder and president of the Institute for Exploration (IFE) at Mystic Aquarium in Connecticut, hosts this engaging examination of modern-day seafaring produced by the award-winning team at &NFi;National Geographic&NFi_;. Deep under the ocean's surface, countries are engaged in a battle of dominance that's lasted more than a century. Their tools: a stunningly sophisticated array of modern-day weaponry and technology.