The Water Horse: Legend of the Deep (stylised on-screen as simply The Water Horse) is a 2007 fantasy drama film directed by Jay Russell and written by Robert Nelson Jacobs, based on Dick King-Smith's children's novel The Water Horse. It stars Alex Etel as a young boy who discovers a mysterious egg and cares for what hatches out of it: a "water horse" (loosely based on the Celtic water horse) which later becomes the fabled Loch Ness Monster. The film also stars Emily Watson, Ben Chaplin and David Morrissey.

Plot

In present-day Scotland, a couple of American tourists meet an old man who, upon request (after seeing the surgeon's photo) tells them about the Loch Ness Monster and why the photo is a fake.