The Glen Arbor Sun has an intriguing article on shipwrecks in the Sleeping Bear Dunes area that have been shifting with the sands over time. You won't need a boat or to perform any dives to see a couple of these wrecks. One of them is at Empire beach just west of the village of Empire. I myself have walked along the wooden skeleton that lies on the beach where water meets sand. It is pretty neat to think you are seeing a piece of a boat that sailed on Lake Michigan in the 1800s. Steve Harold, Director of the Manistee County Historical Museum, has studied the shipwrecks in the Sleeping Bear Dunes area and notes that this particular wreck has "moved a mile" in the 25 years he has studied shipwrecks in the area.
If you enjoy Michigan's maritime history you should read the full article here.