A stunned boat skipper is certain he found Nessie after seeing a plesiosaur on his sonar.
Shaun Sloggie said it was the most convincing sighting he’d ever seen.
Sonar boffins were also left intrigued.
It comes as experts revealed the best places to hunt for the legendary monster ahead of an organised search, as reported by What’s The Jam.
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Shaun said: “I have worked on Loch Ness for 11 years and this is the craziest contact I’ve ever seen.
“It was at a depth of about 300 feet and a good return.
“We have two sonar transducers pinging sound down at 200 kilohertz.
“So that’s 200,000 sound waves per second.
“It’s a powerful system and we can pick up objects clearly deep down.
“The curve shape to any contact means it contains air which suggests it was alive.
“It looks 100 per cent like the Loch Ness monster.
“Like an ancient dinosaur called the plesiosaur.
“Cruise Loch Ness has been doing this for nearly 60 years and it’s truly remarkable what we have picked up over the years.
“The loch is a time capsule that is slowly changing.
“The water is going from salt to fresh and the creatures in there have adapted and evolved to do the same.
“Large creatures are lurking in complete darkness in freezing cold at immense pressure.”
Shaun added that makers of his sonar equipment couldn’t explain the contact telling him it may well have been the Loch Ness monster.
Loch Ness experts have also revealed some of the best places to spot Nessie ahead of a huge watch of the world-famous loch.
The Loch Ness Experience Quest event involves experts, enthusiasts and curious visitors.
Organisers have highlighted locations where sightings might occur, including Urquhart Castle, Urquhart Bay, Bunloit, Fort Augustus and Lochend.
A mass surface watch will take place on Saturday, 30 May, with volunteers scanning the water from selected viewpoints around the loch.
The Quest event runs from Thursday 28 to Sunday 31 May.
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