Underwater is a 2020 American science fiction horror film directed by William Eubank and written by Brian Duffield and Adam Cozad. It stars Kristen Stewart as Norah, Vincent Cassel as Captain, T.J. Miller as Paul, Jessica Henwick as Emily, John Gallagher Jr. as Smith, Mamoudou Athie as Rodrigo, Fiona Rene as Godmother, Gunner Wright as Lee, Amanda Troop as Poseidon Patty.