Who owns the marine archaeology ‘Holy Grail’?

They may, or may not, have found the wreck of the Griffon. But even before the discovery has been confirmed in the waters of north-eastern Lake Michigan, a dispute has broken out over who would own what remains of the 17th century French vessel that experts have described as a “Holy Grail” of North American marine archaeology. The Griffon vanished ~ almost certainly in a storm ~ shortly after it had set out in early autumn 1679 on the return leg of its maiden voyage from Niagara at the eastern end of Lake Erie, to Green Bay on Lake Michigan.