In Memoriam: "Thingamajigger" is dedicated to its writer, Chuck Menville.
Keep Circulating the Tapes: Only over half of the series is available on VHS and LaserDisc (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 (except, surprisingly, the pilot "Whale of a Tale").
Kids' Meal Toy: In 1993, Burger King released a set of four toys; wind-up toys of Ariel and Sebastian, and squirt toys of Flounder and Urchin.
Due to passing away earlier, 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.
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).
Miscellaneous Trivia
This was the only animated Disney series of the 1990s to not be part of The Disney AfternoonorOne Saturday Morning, since it aired on CBS. However, it did air on international versions of the former.