Sully Seagull is an actor. Often type cast as a Seagull, Seagull is best known for his roles as Seagull in The Lightouse (2019), Seagull on a tire in Barb and Star Go to Vista Del Mar (2021) and Steven Seagull in 2016's The Shallows, a debut for which film critic Kyle Buchanan named him "The Breakout Movie Star of the Summer".