I Think that The Nessie Is Fake, As the Picture That was Taken of Nessie (Which was In Black and White) Was just a Sub Marine, As the Photographer Told The Media after a While. He Admitted it Was a Hoax.
You Guys Might Think Im Talking Crap Here But this Is my Theory of The "Nessie"
After The Hoax the Government Must Have heard Of the story, So Maybe They created This Thing that went under Water, Maybe a Submarine Or something. So Every So often it Will Appear above the Surface. The Reason i think this is because the Government Could Earn Money by Making Hoaxes Like These.
Another Crazy Theory of Mine IS That the Murky Water could just be Pollution and It's Fairly Cold Down Scotland And around Lake Nessie so theres Bound to be Foggy Conditions,Which also Might be affecting how Things look. As for the Ripples in the Water, It could just be that tonnes of Local Hooligans/Proffesional Researchers are trying too search for the Nessie, Thus Making Ripples in the water.
that's What i Think, but i think My second Theory is More Logical.
Sig And Avy made by me...Raikiri :D