A Day at the Beach After beach plans for Michael and Amy's family are ruined, Barney takes the Backyard Gang to the beach. They play in the sand, explore a pirate ship, and meet a mermaid. Details Casts Posters Title A Day at the Beach Release Date 1989-04-06 Runtime 00 Hours 30 Minutes Genres Family Adventure Fantasy Music Production Companies Unknown Production Countries Sandy Duncan... Mom / Molly the Mermaid... Bob West... Barney (voice)... Original Size (1400x2100) Original Size (831x1246)