Beneath the icy waters of Lake Superior lies a vast museum of maritime treasures, relics, and souls that in years past were lost to the crashing waves of this massive body of water. Today, those who remain on the surface can glimpse some of this sunken bounty, but most of it is accessible only to those who slip into scuba gear and brave the darkness of the deep.

In Shipwrecks Along Lake Superior's North Shore, veteran diver Stephen B. Daniel, in collaboration with the Great Lakes Shipwreck Preservation Society, provides in-depth tours of the many sunken ships submerged in the...