The Search for Lake Monsters

Beneath the surface of some of the largest lakes in the world mystery abounds.  Sightings of monstrous beast liter the history of mankind and even persist to this day in places like Loch Ness, Lake Okanagan, Crescent Lake, and Lake Champlain, to name a few.  This week explore the claims and history behind some of these monsters and weigh the science against the evidence to see how likely such monsters might actually exist.