Phantom Below (also known as USS Poseidon: Phantom Below and Tides of War) is the first film released by Hawaii-based studio Pacific Films. Its world premiere was at the Hawaii International Film Festival on March 31, 2005. The film is notable in that it has three different editions: one for general audiences, another with eight additional minutes for Japanese audiences, and one with a homosexual theme (Tides of War) as an original film production for LGBT-interest television channel here!.

It was filmed entirely on the Hawaiian island of Oahu and employed hundreds of local actors and crew members. It was produced and directed by Brian Trenchard-Smith and stars Adrian Paul as Commander Frank Habley and Mike Doyle as his lover, Lt. Commander Tom Palatonio.