To create the water effect in the film, lube was used.
The reason for Adam Elliot's films lack of traditional dialogue (I.E. Conversations) is because of the films low budget requiring to lip sync the dialogue.
The second feature film by Adam Elliot since "Mary and Max" (2009). His other films range from under ten minutes (his family clayography trilogy "Uncle" (1996), "Cousin" (1998), and "Brother" (1999)) to around twenty minutes (the academy award winning "Harvie Krumpet" (2003) and his previously most recent work "Ernie Biscuit" (2015)).
Adam Elliot's work is often heavily narrated. This movie appears to be the first one primarily narrated by a female actor (Sarah Snook). Although Mary and Max (2009) did have scenes narrated by Toni Colette and Bethany Whitmore (as well as the late Phillip Seymour Hoffman), the majority of the film was narrated by Barry Humphries. Other main narrators include: William McInnes, Geoffrey Rush, and John Flaus.
Director Adam Elliot likes using snails in his work. In this film they are a thematic focus. In his last feature film "Mary and Max" (2009) Max has pet snails named after famous physicists and in his debut short film "Uncle" (1996) the nameless titular Uncle liked to collect and smash the ones on his mailbox every Monday.