What secrets sink to the bottom of the sea when a vessel goes under? Learn about how marine archeology is carried out, what the divers look for when they dive and explore shipwrecks, and how the information is pieced together to fill in gaps of the history of human migration. Specifically, the transatlantic slave trade, in which 12.5 million Africans were transported around the world against their will. Sharon welcomes Marine Archeologist Dr. Sean Kinglsey to share his expertise.