 CONT: There are many inconsistencies with the opening scene of the  episode. The water is seen to be shallow at times (too shallow for a  cruise ship), then the swimmer is seen from below at a great  distance; the swimmer and the life preserver are seen near each  other from above, then the swimmer is seen from below with the life  preserver nowhere near him. Reflections in the water of a shoreline  or docks in the background are visible in close