Now, sonar technology has picked up a mystery image, 190m deep in Scotland’s largest loch, that one Nessie expert is calling the “most compelling” evidence of the existence of the legendary creature he has ever seen.
The 'solid and pretty big' sonar contact, measuring around 10m, was detected by a boat owned by Cruise Loch Ness, in Fort Augustus, Scottish Highlands.
The mystery creature is likely to feed on trout and eels at the bottom of the loch, which has the largest volume of freshwater in Britain.
Director Ronald Mackenzie, 48, said: “Who knows what it is, there is quite a lot of fish at the bottom of the loch, there is carnivorous trout and eels.
“I believe that there is something big living deep down in the Loch, who knows what it can be but I would love to think it's Nessie.
“It is something which is feeding on eels or trout. It is quite unusual.”
The mass was picked up around 4pm on Wednesday when Ronald was skippering a boat with technology from two years ago, about six miles from Fort August.
The dad-of-three added: “A sonar expert has looked at it and says it's genuine.
"There is definitely something down there.
“I'm going to give the image to the company which made the equipment to look at.”
Ronald has worked on Loch Ness all his life, and he hopes Nessie-hunters do not descend on it in the wake of the mystery image.
He added: “It is not usual for us to pick up a big contact on the sonar.
“It is quite modern equipment. It was at 190m deep, the loch is around 300m deep.”
Nessie expert Steve Feltham said Ronald’s sonar image was the “most compelling” evidence of the existence of the legendary creature he had seen.
He told the Daily Record: “It is extremely exciting. I have known Ronald Mackenzie for 30 years.
"He’s a Highland lad who does not seek publicity and shies away from the fanciful Nessie theories.
“I definitely think Nessie is an animal. I think we are getting closer to finding the answer.”
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