The Water Horse: Legend of the Deep.

Name: The Water Horse: Legend of the Deep
Genre: Adventure, Fantasy, Family
Released: 2007-12-25
Duration: 111 min
Cast: Emily Watson, Alex Etel, Ben Chaplin, David Morrissey, Brian Cox

A secret this big needs a whole loch.

During World War II, a Scottish boy finds an unusual egg near Loch Ness. The creature that hatches becomes his closest companion, but hiding a rapidly growing water horse is difficult with soldiers stationed nearby.

74%Tomatometer88 critics · Rotten Tomatoes

Checked Oct 20, 2026. About these scores

Why it’s a little special

A mischievous creature friendship grows into an atmospheric adventure about grief, trust and letting go.

BEFORE YOU PRESS PLAY

Know the story.
Know your little people.

Parental guidance suggested

US film rating

A missing father and wartime grief, military weapons, explosions, animal peril and dangerous water scenes. Some sequences are frightening despite the playful beginning.

Our notes are a starting point, not an age recommendation. G and PG films can still include intense moments. You know your family best.

BEHIND THE SCENES

The little details.

Directed by: Jay Russell
Starring: Emily Watson, Alex Etel, Ben Chaplin, David Morrissey, Brian Cox, Priyanka Xi, Marshall Napier, Joel Tobeck, Erroll Shand, Ian Harcourt, William Patrick Johnson, Bruce Allpress
Written by: Robert Nelson Jacobs
Produced by: Robert Bernstein, Douglas Rae, Barrie M. Osborne, Charlie Lyons, Charles Newirth, Jay Russell
Release date: December 25, 2007
Runtime: 111 minutes
Genre: Adventure, Fantasy, Family
Studio: Revolution Loch Productions, LLC
Language: English