- The Danza: In the Greek dub, Áriel Konstantinídi voices Ariel.
- Disowned Adaptation: Many animators who worked on the original film disliked the television series, as they felt all their work was being trivialized.
- In Memoriam: "Thingamajigger" is dedicated to its writer, Chuck Menville.
- Keep Circulating the Tapes: Only about half of the series is available on VHS (plus three as part of the Disney Princess DVD line). The rest went unreleased. In 2018, however, the complete series was released on iTunes. In addition, the entire series is now available on Disney+ as of November 2019.
- However, for reasons unknown, "Whale of a Tale" (the pilot and very first episode) is missing from Disney+
- The Other Darrin:
- Due to Author Existence Failure, Ben Wright was unavailable to play Grimsby. He was replaced by another veteran character actor, Kay E. Kuter, in the TV series and The Little Mermaid II: Return to the Sea.
- Cathy Cavadini, Mary Kay Bergman and Sherry Lynn respectively voice Andrina, Arista and Adella instead of Kimmy Robertson, though the latter returned as Alana.
- Maurice LaMarche voices Scuttle instead of Buddy Hackett.
- Mona Marshall and Kath Soucie respectively voice Aquata and Attina instead of Caroline Vasicek.
- In the Japanese dub:
- Masahiro Anzai voices Sebastian instead of Tsunehiko Kamijo.
- Taro Ishida voices King Triton instead of Akira Kume.
- Hidetoshi Nakamura voices Louis instead of Yasutaka Anzai.
- Yu Hayashi voices Flounder instead of Daisuke Otomo.
- In the Norwegian dub, Guri Schanke voices Ariel instead of Sissel Kyrkjebø.
- Role Reprise: Returning from The Little Mermaid (1989) are Jodi Benson as Ariel, Samuel E. Wright as Sebastian, Pat Carroll as Ursula, Paddi Edwards as Flotsam and Jetsam, and Kenneth Mars as King Triton.
- What Could Have Been: An episode centering around how Ariel's mother died was pitched, but was rejected for being too dark. The script would later become The Little Mermaid III: Ariel's Beginning.
- Before this, an attempt was made at a live-action show with puppets, Little Mermaid's Island, with Jim Henson Productions co-producing for the Disney Channel (then a pay service); Henson and Disney were attempting a merger at the time. Grimsby would've been the only other recurring human, here as a friendly sea captain. However, Henson was disappointed in the results; it wasn't long after this that he died and the merger was called off (Disney would eventually acquire the Muppets characters in 2004).
Trivia / The Little Mermaid: The Series