Helen Mirren

Princess Emilia

Pam Dawber

Pearl

Treat Williams

Prince Andrew

Karen Black

Sea Witch

Brian Dennehy

King Neptune (Narrator) (voice)

Shelley Duvall

Self - Host

Donna McKechnie

Anemone

Laraine Newman

Coral

Guy Boyd

The Captain

Geoff Hoyle

First Mate

Carinthia West

Charlotte

Shawn Erler

Boy on the Beach

John Achorn

Sailor (uncredited)

Patrick DeSantis

Sailor (uncredited)