The film was shot in only 12 days for under $500K in the actual ocean with only one underwater sequence shot in a pool. Parts of the film also had to be re-written during shooting due to last minute issues with locations.
The trailer has been heavily criticized for spoiling much of the movie.
Production was completed in time for the first showing of Frenzy on SyFy August 15,2018 at 8:00 central time.