It was called Splash.
Daryl Hannah and Tom Hanks had the lead roles.
Yes, it has been done! -In fact, it can be 'fully functional' as Daryl Hannah found while filming Splash! in 1984. See the link below for more information:
That would be the 1984 comedy "Splash", in which Tom Hanks dates a shapeshifting mermaid.
Daryl Impey was born on 1984-12-06.
Tom Hanks made two movies in 1988: Big and Punchline.
Mermaid Legend was created on 1984-04-14.
Splash (1984)
Daryl Boston debuted on May 13, 1984 and played his final game on August 11, 1994.
the little mermaid and h2o and aquamarine "Mr. Peabody and the Mermaid" (1948). Stars William Powell, Ann Blyth, Irene Hervey. "Miranda" (1948). Stars Glynis Johns, Griffith Jones. "Mad About Men" (1954). Sequel to "Miranda". Stars Glynis Johns, Donald Sinden, Margaret Rutherford. "Mermaids of Tiburon" (1962). Stars George Rowe, Diane Webber. (Warning: Mermaids are topless). "Splash" (1984). Stars Tom Hanks, Daryl Hannah, Eugene Levy, John Candy. "The Little Mermaid" (1989). Animated. Stars Jodi Benson, Rene Auberjonois, Christopher Daniel Barnes, Buddy Hackett. "Aquamarine" (2006). Stars Emma Roberts, Joanna Levesque, Sara Paxton.
Hannah Bowley was born on 1984-01-29.
Rodney Hannah was born on 1984-08-09.
Snorks - 1984 A Sign of the Tides The Littlest Mermaid 2-9 was released on: USA: 9 November 1985