Sarah, I know exactly what the Loch Ness monster is, and people believe it could be a Plesiosaurus. I've read books about the unsolved and whatnot. The Loch Ness monster could also be just a giant octopus or squid, and all you're actually seeing is the tentacles. But, if you ask me, the Plesiorsaurus is more plausibe. Not to mention there are other tales, much like the Loch Ness tale, including one for the St Lawrence River. That monster is nicknamed Nelly or Nessie or something stupid like that.
If ya don't believe me go type in Loch Ness monster at google, then type in Plesiosaurus. I've done that on more than one occasion.