St. Lawrence Seaway trip Three days of Wreck/Drift diving, September 1st, 2nd and 3rd in the St. Lawrence River from the Canadian side.
Trip includes 3 days of 2 tank diving (2 days boat diving & 1 day shore diving) and 3 nights lodging on the St. Lawrence River with Continental breakfast. $450 passport required
http://www.1000-islands.com/diving/skindive.htm