Here’s what you’ll learn when you read this story:For centuries, the legendary Loch Ness Monster has often been imagined as a creature that swims with extreme vertical undulations. Most eyewitness accounts of Nessie sightings do not describe arches, so if she does exist, she probably looks like what these witnesses think they saw. The Loch Ness Monster of Scottish lore has often been depicted as a serpentine creature undulating vertically in the water. Ancient texts going back to the sixth century A.D. describe sightings of a “watery beast” lurking in the depths of the loch. They instead think that vertical arches surfaced from a way to show that the creature slithered through the water even if the depiction wasn’t literal.