The Sea Beast is written, directed, and produced by Chris Williams. Since the late 1990s, the prolific director has primarily worked for Disney. Mulan was his debut production, and he worked as a story artist on it. Since then, he's worked on some of Disney's biggest blockbusters in various capacities. He most recently worked as a co-director on Moana and directed Big Hero 6 in 2014.
Jed Schlanger, a producer on the movie, has previously worked on Dreamworks films such as 'How to Train Your Dragon: The Hidden World' and 'The Boss Baby'. Melissa Cobb, Netflix's VP of kids and family content, is mentioned as a producer, along with Christian Hejnal (Spider-Man: Into the Spiderverse) as an associate producer.