While travelling in a west by southwest direction on the St. Lawrence River between Murray and Grenelle Islands, the operator of the vessel in question heard/felt a thump, and brought the vessel to a stop.  His first thought was that he had hit a shoal.  While checking his boat, he saw a body floating nearby.  Upon going back to retrieve the subject, he also noticed a floating marker, the type used by swimmers.  Operator cited waves and glare from the sun for his inability to see the swimmer.  Alcohol was not a factor in this incident.
ORLEANS                       