Submerged is a 2005 American action film directed by Anthony Hickox, who also wrote it with Paul de Souza and produced with Michael P. Flannigan, Daphne Lerner and David Varod.

The film stars Steven Seagal, William Hope, Vinnie Jones and Christine Adams.

At the U.S. Embassy in Montevideo, Uruguay, Secret Service agents are briefing the ambassador on a terrorist base when they suddenly go haywire and kill her and then themselves.

Later, in Washington DC, intelligence analyst Dr. Chappell (Christine Adams) concludes that some sort of mind control device must have been used.

Taken to the terrorist base, they are brainwashed by Dr. Adrian Lehder (Nick Brimble), a scientist who heads a secret CIA experiment in mind control, programming soldiers to become virtually unstoppable killing machines when they are given the right commands.

The Navy recruits Cody and his talented crew to take Chappell and special agent Fletcher (William Hope) with them in an effort to destroy the facility and take down Lehder.

So that was the original idea, and we story boarded it and we designed the creatures; like these little, mini kind of crab insects that could go down the drains of the submarine so you’d never know when they were coming.

The stunt guy had worked with Angelina Jolie on Tomb Raider and he showed me how to hang upside down from things, how to jump down into dams and how to strangle people with my knees.