The great lakes are fresh water...predominantly...but being connected to the Atlantic ocean via the St. Lawrence river...there is also some salinity...you will still sink like a rock.
Even in Chicago...down by the Soldier Field area...you can smell the salt.
I had a friend in the Air Force back in the day who claimed to “know” that the USSR would never aim nukes at the Great Lakes because that amount of fresh water was too valuable to contaminate. Who knows if that was (is) true?
The great lakes are fresh water...predominantly...but being connected to the Atlantic ocean via the St. Lawrence river...there is also some salinity...you will still sink like a rock.
Even in Chicago...down by the Soldier Field area...you can smell the salt.