Leviathan

On the dark and forbidding ocean floor, the crew of a deep-sea mining rig discovers a sunken freighter that harbors a deadly secret: a genetic experiment gone horribly wrong. With a storm raging on the surface and no hope of rescue, the captain (Weller) and his team are propelled into a spine-tingling battle for survival against the ultimate foe a hideous monster that cannot die...and lives to kill! (official distributor synopsis)