Northeast Michigan’s Thunder Bay National Marine Sanctuary is estimated to contain over 200 shipwrecks. In this episode, we speak with sanctuary superintendent Jeff Gray about the significance of these world-class wrecks, the rich history they contain, and the wealth of scientific research and recreational opportunities that the sanctuary has to offer. We also dive into how NOAA, its partners, and the community of Alpena, Michigan, work together to advance the sanctuary’s mission of preservation, research, and recreation.