The monologues which comprise the film were intentionally written after the entire film was shot. Each shoot day consisted of showing up at the beach and Cody Clarke coming up with scenarios for the characters to perform, with all dialogue left up to them, as it would not be heard. After all the shoot days, a rough cut of the film was constructed of all the best shots and takes, and Cody wrote the monologues to that footage.
All of the shark facts rattled off by the main character are true, or close to true.
One of Jules Roscoe's favorite chunks of monologue is the 'pea soup' part, despite not liking pea soup herself.
The first 'shark movie' without a shark in it.
Cody Clarke has expressed interested in making other 'No' movies, including a sequel called 'No Zombies', which would be an existential zombie movie with no zombies in it.