Waterhorses Are Not Loch Ness Monsters

Supernatural creatures with no true physical form, waterhorses can be identified only by badly distorting Scottish folklore. They do not act like or resemble Nessie in any meaningful respect. Moreover, they are part of global folklore and have no unique association with Loch Ness. There is a story about Saint Columba doing a miracle to convert the local Picts to Christianity. In the story, he defeats a water beast of some kind by making the sign of the cross and telling it to go away. But there's nothing in particular that makes it sound like the Loch Ness monster in this legend.