The Flathead Lake Monster is commonly known as the Montana Nessie. Said to be located in Flathead Lake in Montana. It's existence hasn't been proven yet though. It's very similar in appearance to the Loch Ness Monster supposedly. A eel-shaped creature, it's round with a wavy body like a snake which spans from 20 to 40 feet. It has grayish-black eyes. Is brownish to blue-black. Said to have many humps comeing above the surface of the water when spotted.