United States of America
The Grand Traverse Bay Underwater Preserve is a preservation area that encompasses all of Grand Traverse Bay, a bay of Lake Michigan, in the U.S. state of Michigan. It is 295 square miles (760 km2) in size and is located off Traverse City, Michigan.
Listen to the audio guide for Grand Traverse Bay Underwater Preserve Free on WIP — starts by itself when you arrive, even with the screen off