Winter means only the very brave (or very crazy) are dipping into the waters of the Chesapeake Bay. That might be a good thing. Beneath the calm waters of our beloved bay, a monster lurks — or so Maryland lore would have us believe. On a clear night in May 1982, Robert Frew and his wife Karen entertained friends at their home along the Bay. Around 7:30 p.m., when the calm water reflected the low sun’s rays, Robert looked out to admire the scene. “Look at that thing floating o