An animated film about a mermaid is 'The Little Mermaid' starring ARIEL, which has five letters. The Little Mermaid is a 1989 American animated musical fantasy film produced by Walt Disney Feature Animation and released by Walt Disney Pictures. It is based on the Danish fairy tale of the same name by Hans Christian Andersen. The film tells the story of a mermaid princess named ARIEL who dreams of becoming human and falls in love with a human prince.