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.
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).