In the opening scene when King Triton arrives at the arena, Mickey Mouse, Goofy, Donald Duck and Kermit the Frog can be briefly seen in the crowd of sea-people as mermen when he passes over them.
Originally, Sebastian was to have an English accent. It was lyricist/producer Howard Ashman who suggested he speak with a Caribbean accent. This opened the door to calypso-style numbers like "Under the Sea," which won the Academy Award.
Ariel's rendition of "Part of Your World" set a precedent for subsequent Disney animated musicals where the protagonist would vocalize his or her desires early in the film. The song was referred to by Howard Ashman as the "I Want" song. See also "Belle" in Người Đẹp Và Quái Vật (1991), "One Jump Ahead" in Aladdin (1992), "I Just Can't Wait To Be King" in Vua Sư Tử (1994), "Just Around the Riverbend" in Công Chúa Da Đỏ (1995), "Out There" in Thằng Gù Nhà Thờ Đức Bà (1996), "Go The Distance" in Dũng Sĩ Héc-quyn (1997), "Reflection" in Hoa Mộc Lan (1998), "Strangers Like Me" in Tarzan - Cậu Bé Rừng Xanh (1999), "I'm Still Here" in Hành Tinh Báu Vật (2002), "Almost There" in Công Chúa và Chàng Ếch (2009), "When Will My Life Begin?" in Công Chúa Tóc Mây (2010), "For the First Time in Forever" in Nữ Hoàng Băng Giá (2013) and "How Far I'll Go" in Hành Trình Của Moana (2016).
Ariel is the first Disney princess to have biological siblings.
Ben Wright's final film, released four months after his death following heart surgery. When he got the part of Grimsby, Prince Eric's manservant, the younger Disney folks had no idea that he had been the voices of Roger in 101 Chú Chó Đốm (1961) and Rama in Cậu Bé Rừng Xanh (1967). He had to tell them.