I was wondering are there any good spots to metal detect near shore for coins? I mean east coast states have all this history. Im in mid Michigan and would like to dive for old coins and bottles, so if you know any good spots please let me know 

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Yup. The St. Clair river is the place to dive for bottles, china, anchors, or you name it. Getting in the water is fairly easy along the river. Lots of dangers though. Very high current, lots of boat traffic, lots of fish hooks and fishing line in the water, and lots of debris to bang into or get stuck on. If you go, I recommend going with someone that has experience in the river who can show you the way. That said, I feel the river is some of the best diving a diver can do. So diverse and you will never get bored!