A marine unit of the OPP has recovered the body of a 17-year-old North Bay boy.  The body of Christopher Stanley was recovered early Sunday night in a North Bay-area lake.  Stanley and another 17-year-old boy were in a fishing boat early Sunday morning when they both ended up overboard.      The motorized boat kept circling the boys as they cried out for help and residents on shore were able to rescue one of the boys.  An autopsy is being carried out on Stanley.