WILHELM SCREAM: When the Water Horse knocks over the patrol boat, one of the secondary soldiers cries out as he flies into the water.
Prints were shipped to some theaters under the fake title "Discovery".
The title, 'The Water Horse', is a reference to the kelpie, a malevolent beast of Celtic lore that would disguise itself as a horse to lure unsuspecting victims to it. Once the unfortunate soul had mounted the kelpie, it would drag him or her down to their watery death.