See this article from 2006:
Scientist pours cold water on Loch Ness dinosaur theory
02 November 2006 By SHÂN ROSS
A LOCH Ness Monster theory which suggests the creature is a living dinosaur has been dealt a blow by scientists. Many believe that Nessie is a plesiosaur, a long-necked marine reptile which sought refuge in
Dr Noe, whose findings are reported in this month's New Scientist, told experts at a meeting of the Society of Vertebrate Palaeontology in
If the surgeons photo is a fake and Nessie does not stick it's head out of the water in this fashion then it could still be a plesiosaur. However It is unlikely . I know most science is guesswork and we all set out to prove our theories are right and then someone comes along and tries to prove the theory wrong...thats how it works in academic life... but I feel this scientist may be right . The neck of an elasmosaurus is ridiculously long and would be difficult to hold upright. I would love nessie and other lake monsters to be living dinosaurs but sadly it is unlikely and more likely that they are either an unknown creature or a giant eel or huge fish. Still would be exciting to find the answer though.......anyone got a large fishing net they are not using?