On opposite sides of the planet from each another, two historic shipwrecks sit in a constant state of change. Both bear historical witness to the story of their day, yet they are very different: One is a Mediterranean cargo vessel from over 2,300 years ago, the other a Norwegian tanker that sank off the coast of New Jersey in 1964. Although they differ in nearly every way, the one key thing they share today is how divers and researchers across the globe uncover and honor their stories: the intersection of mission, art, skills and technology in a modern expedition.