Whalefall is a 2026 American survival thriller film directed and produced by Brian Duffield, based on the 2023 novel by Daniel Kraus, who co-wrote the script with Duffield. The film follows a scuba diver who, while searching for the remains of his estranged father, is swallowed alive by a sperm whale and attempts to escape. Elisabeth Shue, John Ortiz, Jane Levy, and Emily Rudd also star in supporting roles.

Summary from Wikipedia (CC BY-SA).