What exactly is marine archaeology? It is the study of past human cultures with an emphasis on how humans interacted with the world's oceans, lakes and river systems. It tends to be best known for its focus on shipwrecks, it is really the study of everything connected to seafaring. Dive in with the NOAA Ocean Today Every Full Moon series to find out what we can learn from the bottom of the seafloor. Jim Delgado, renowned maritime archaeologist, will guide you through what maritime archaeology is, what he has seen and discovered and why it’s helpful in understanding more about how we live, think and work today.