Littlefoot's Adventures of The Little Mermaid is the second upcoming Land Before Time/Little Mermaid crossover film re-edited by yru17. It is unknown when it will appear on YouTube.
Littlefoot and his friends (along with Stan, Jesse, and their friends) time-travel back to the kingdom of Atlantica and reuntie with Ariel. And later they meet Prince Eric. They must help Ariel fulfill her old dream of being part of a human world and help her understand what being a human is like.
- Stan Marsh, Kyle Broflovski, Eric Cartman, Kenny McCormick, Mo, Ali, Bron, Shorty, Jesse Greenwood, Willy the Whale, Elvis, Randolph Johnson, Nadine, The Goonies (Mikey Walsh, Brand Walsh, Mouth Devereaux, Data Wang, Chunk Cohen, Andy Carmichael, Stef Steinbrenner, and Sloth Fratelli), Rex, Woog, Elsa, Dweeb, Celebi, Scooby-Doo, Shaggy Rogers, Velma Dinkley, Fred Jones, Daphne Blake, Scrappy-Doo, The Vultures (Buzzie, Flaps, Ziggy, and Dizzy), Jiminy Cricket, Zazu, Charlie Barkin, Itchy Itchiford, Mickey Mouse, Donald Duck, Goofy, Bugs Bunny, Daffy Duck, Jack Skellington, Oogie Boogie, Carface, Killer, Pete, The Machine, and Team Rocket (Cassidy and Butch) guest star in this film.
- Oogie Boogie, Carface, Killer, Pete, The Machine, and Team Rocket (Cassidy and Butch) will work for Ursula in this film.
- Jesse, Willy, and Randolph have faced Ursula before in Pooh's Adventures of Free Willy and then with Elvis and Nadine in Pooh's Adventures of Free Willy 2: The Adventure Home.
- Jiminy Cricket has teamed up with Littlefoot and his friends before in Littlefoot's Adventures of Sleeping Beauty, Littlefoot's Adventures of Free Willy 2: The Adventure Home, The Land Before Time/Star Wars saga, Littlefoot's Adventures of The Little Mermaid: Ariel's Beginning, and Littlefoot's Adventures of Rock-a-Doodle.
- Jiminy Cricket will see Littlefoot and his friends again in Littlefoot Meets The Swan Princess, the Disneyland version of Winnie The Pooh In Fantasmic!, and Littlefoot's Adventures of Pinocchio.
- Jiminy Cricket will see Ariel again in Winnie the Pooh's World of Color and Pooh's Adventures of The Princess Diaries.
- Jiminy Cricket will see Sebastian again in Winnie the Pooh's World of Color and Simba, Timon, and Pumbaa's Adventures of Pinocchio.
- The Vultures and Jiminy Cricket first faced Ursula before Pooh's Adventures of The Muppet Movie.
- Littlefoot and his friends, The Vultures, and Jiminy Cricket will face Ursula again in the Disneyland version of Winnie The Pooh In Fantasmic!.
- Like Disneydaniel93's film Pooh's Adventures of The Little Mermaid, this is an NTSC film with NTSC bits from The Land Before Time films, South Park: Bigger, Longer & Uncut, Free Willy 1-3, The Goonies, We're Back! A Dinosaur's Story, Pokémon 4Ever, the Scooby-Doo films, the All Dogs Go to Heaven films, the Mickey Mouse films, A Goofy Movie, An Extremely Goofy Movie, Space Jam, Looney Tunes: Back in Action, and The Nightmare Before Christmas.
- Both The Little Mermaid and All Dogs Go to Heaven were released in theaters on November 17, 1989. This happened around the same year The Land Before Time was first re-released on home video.
- The Little Mermaid was first released on home video in 1990, the same year that Universal Pictures (the studio that released The Land Before Time movies) celebrated its 75th Anniversary for movie making.
- The Little Mermaid was re-released in theaters in 1997, the same year that The Land Before Time V: The Mysterious Island was released straight to video, the first four Land Before Time films were re-released on home video as the sign language edition, the adult animated TV series South Park was first shown on Comedy Central, and Free Willy 3: The Rescue was also released in theaters.
- The Little Mermaid had a second home video release in 1998, the same year that The Land Before Time VI: The Secret of Saurus Rock and Scooby-Doo on Zombie Island were released straight to video and the first five Land Before Time films were re-released on home video under the Universal Studios Family Productions series.
- Both The Little Mermaid and Free Willy were first released on DVD in 1999, the same year South Park: Bigger, Longer & Uncut was released in theaters, the original 1997 DVD release of The Land Before Time was reprinted, and Scooby-Doo and the Witch's Ghost was released directly to home video.
- The Little Mermaid went back into the Disney Vault in 2009, the same year that We're Back! A Dinosaur's Story was first released on DVD, Scooby-Doo and the Samurai Sword was released directly to DVD, and the DVD releases of the first three Free Willy films were reprinted.