Loch Ness Monster (and other Lake monsters)

Despite excellent expeditions with sophisticated electronic equipment, the lake monsters of the world continue to elude scientists. Yet spontaneous sightings by good witnesses, although rare, persist.

The Loch Ness monster, or Nessie, is undoubtedly the most well-known of these aquatic mysteries. But other deep, cold lakes around the world have their own legendary beasts: Chessie in Chesapeake Bay, Storsie in Sweden's Lake Storsjön, Selma in Norway's Lake Seljordsvatnet and "Champ" in New York's Lake Champlain among others.

Descriptions of this creature, too, are amazingly similar:

a large creature with a long neck a horse-like head a humped back Most sightings report the humps protruding from the surface of the water (which skeptics dismiss as being almost anything, from schools of fish to floating logs), but occasionally a lucky witness will see the creature stretch its neck high above the water and look around a bit before submerging.

Photo and video evidence is rare. And although some of the photos are tantalizing (most notably the famous "flipper" photo taken by the Rines expedition in 1975), most such "proof" is fuzzy or inconclusive at best.

If the creature does exist, many researchers suspect that it could be a kind of plesiosaur - an animal from the age of the dinosaurs that is thought to have become extinct more than 66 million years ago. Could a lineage of these incredible creatures possibly have survived?