The Great Lakes are big–but you don’t realize they are THAT big. The Living Great Lakes, the summer reading for Underwater Robotics, reveals the enormous reach of the Great Lakes, through science, history and environment. Humans have been fishing and boating the Great Lakes for thousands of years. In 1634, a French trader, probably the first European to enter Lake Michigan, went ashore around Green Bay and thought he had reached China. The surface area of the Great Lakes is roughly the size of New York, New Jersey, Connecticut, Rhode Island, Massachusetts, New Hampshire and Vermont combined. There is enough water in the Great Lakes to cover the lower, flattened, 48 states to a depth of 10 feet. And through it all, author Jerry Dennis keeps searching for core meaning of the lakes, hence his subtitle: Searching for the Heart of the Inland Seas.