Breakthrough in search for America's 'Loch Ness monster' as giant 20ft creature captured on sonar

There's been a surprising breakthrough in the search for America's answer to the Loch Ness monster. Take a look for yourself:

She believes that the clip serves as evidence for the legendary monster of Lake Champlain in Vermont, which has been delightfully nicknamed 'Champ'.

Katy herself has amassed a small but dedicated team of supporters as part of her 'Champ Search' group.

And it's safe to say they are intrigued by her recent findings, which resulted from a recent trip on her boat 'Kelpie II'.

In the sonar readings, a long object can be seen moving through the lake at a depth of around 42.5 feet, using what looks like a fin to propel itself through the water.

Kate then goes on to compare the footage to other sonar readings for a sturgeon, a small perch fish and a small whale, highlighting the 'major difference in movement and size'.

Tim wrote: "This latest experience, however, may have been even more gratifying and enlightening as the video allows for a look at how the 'monster' may move through the water and provide some clues as to the nature of the creature."

Many viewers were just as excited about the discovery, with one writing: "Awesome capture CS, saw your blip on coast2coast carousel. Definitely a slithering, plesiosaurish thing… 

"It would be nice to see a very large sturgeon 20+ feet on same scale, for reference, as another commenter mentioned. Anyway great job and looks fun!"

Another said: "Excellent work Miss E. I don't think sonar footage or evidence comes much better than that!"

A third, who said they were left 'speechless' by the footage, chimed in: "I feel like we are definitely coming extremely close to proving Champ as a real species to science very soon this is very good sonar footage!

"Absolutely amazing the animal looks very serpentine! This is the best evidence I’ve ever seen of Champ!"

Well, looks like Kate's findings have definitely floated their boats.

Oh, and if you're still wondering, cryptozoology is a subculture that searches for and studies unknown, legendary or extinct animals whose existence is, well, up for debate.

Think Bigfoot, the Loch Ness and our new friend Champ.