The "killer whale movie" you're looking for is Killer Whale, released January 16, 2026, a survival thriller starring Virginia Gardner and Mel Jarnson, directed by Jo-Anne Brechin, about two friends trapped in a lagoon with a vengeful orca named Ceto. It's an action/horror/sci-fi film by Lionsgate, available in theaters and on digital platforms, with a plot focusing on an vengeful orca seeking revenge for captivity.