1. Every bubble in the film is hand-drawn.
2. Ariel's voice, Jodi Benson, sang "Part of Your World" in the dark so she could feel like she was in the dark.
3. Similarly, the song was almost cut because it was "too boring."
4. Sebastian could have had an English accent instead of a Jamaican one.
5. In an early version of the film, Ursula was Triton's sister.
6. Ursula was partially inspired by Madame Medusa from The Rescuers.
7. In Ariel and Eric's wedding scene, The Grand Duke and the King from Cinderella can be seen.
Source:
http://www.j-14.com/posts/10-totally-mind-blowing-facts-about-the-little-mermaid-17164/photos/the-little-mermaid-11-9730#photo-anchor
