The Little Mermaid: live-action

The movie came out on digital download on 25 July 2023, with physical releases (Blu-Ray and DVD) following on 19 September 2023.

Extras:

• Song Along Version - Watch the movie with on-screen lyrics
• Hotter Under the Water - Behind-the-scenes featurette split into five chapters:
• A Tale of the Bottomless Blue
• I Know Something's Starting Right Now
• Down Where It's Wetter
• Explore That Shore Up Above
• Do What the Music Say
• Song Breakdowns
• The Scuttlebutt on the Sidekicks
• Passing the Dinglehopper
• Bloopers

The official novelization of the film is written by Faith Noelle, and features some on-set photos of the film as below.

"Make a Splash" is a picturebook of the film, adapted by Ashley Franklin and with illustrations by Paul Kellam.

"Adventures on Land" is a picturebook covering Ariel's first two days on land, and uses images from the film along with text by Brittany Mazique.

This Little Golden Book picturebook of the film is adapted by Lois Evans.

J. Elle's "Against the Tide" is a YA prequel novel about Ariel at fifteen, set not long before the movie starts. In it, Ariel is about to become Protector of her very own sea territory, for although Triton is king, his seven daughters each have their own territory to govern.

Ariel is excited but also nervous, because it's a big responsibility she's not sure she's ready for. But the day of her Protector Ceremony is ruined when her sister Mala goes missing, seemingly kidnapped. All that's left behind is a note in Mala's hand that "What could have saved Mother could save me, too". Triton has his own investigation, but Ariel feels that he's missing important clues, and she starts her own investigation.

Along with that whodunit mystery, Ariel has to contend with her father's overprotectiveness, and the fraught relationships between her sisters, who have become estranged from one another since their mothers' death. Ariel herself struggles being the youngest princess, i.e. she's not taken seriously, and her lack of memories about their mother makes her feel like an outsider in her family. But as Ariel's investigation picks up, she enables her sisters to reconnect, learns some important lessons about the underwater society they live in, and meets a well-traveled but shy little fish named Flounder.

"Guide to Merfolk" is written by Eric Geron and illustrated by Arianna Rea, Denise Shimabukuro and Max Narciso. It's a picturebook/artbook in the style of an "in-universe" referral textbook owned by Prince Eric, and which was gifted to him by his mother Queen Selina. The queen gave Eric the book in the hopes of teaching him his people's beliefs that merfolk are real and dangerous, but Eric is skeptical. The book has beautiful pencil-style illustrations amidst what can be considered the merfolk lore of the movie, plus Eric's opinionated scribblings on various pages.

Only hints of this lore are in the final film, and even then that lore doesn't entirely fit with the film as it is, but it stills makes for an interesting companion piece, with such details of a suggested past where humans and merfolk coexisted, a legend of how the sea king's wife was killed due to the manipulations of a sea witch, details of Ariel and her sisters' responsibilities as rulers of different portions of the sea, plus glimpses of Eric's personality in his comments on the pages.