Hi Ohio Family,
The nearest place for snorkling would be Fathom Five National Marine Park at the end of the Bruce Peninsula in Ontario, Canada. It has a great worldwide reputation for snorkling because of the numerous shipwrecks, some only a few feet under water. Also, the water is extremely clear, with a glass bottom boat one can see 100 feet and more. Google maps gives me 335 miles from Toledo, Ohio to Tobermory, the town nearby.
Here are two links:
The official Parks Canada site:http://www.pc.gc.ca/eng/amnc-nmca/on/fathomfive/index.aspx
The Wikipedia page:http://en.wikipedia.org/wiki/Fathom_Five_N...nal_Marine_Park
Nearby camping is at Bruce Peninsula National Park:http://en.wikipedia.org/wiki/Bruce_Peninsula_National_Parkhttp://www.pc.gc.ca/eng/pn-np/on/bruce/index.aspx
More campgrounds are on rvparkreviews.com under Tobermory, Ontario, Canada, or on the website of the Ontario Private Campgrounds Association:http://www.campgrounds.org/
then click on search campgrounds, area maps, Grey/Bruce
Be advised that this is a very popular area and in the summer reservations are a must. Also, even though this is Canada, it does not snow or freeze in Tobermory in summer, the daytime high end of July beginning of August is around 72 to 80º F. ;-)
Have fun planning!