Grimes, an amoral chimney sweep, occasionally likes to steal valuables from his clients. One day, on the verge of being caught, he frames his young apprentice, Tom, for the crime. Tom runs away and jumps into a river where, instead of drowning, he finds himself transformed into a mystical aquatic creature. Swimming and breathing effortlessly, he discovers a colorful underwater world replete with creatures both cruel and kind.
James Mason
Mr. Grimes / Voice of Killer Shark
Bernard Cribbins
Mr. Masterman / Voice of Eel
Billie Whitelaw
Mrs. Doasyouwouldbedoneby / Old Crone / Mrs. Tripp / Woman in Black / Water Babies 'Gate Keeper'
Tommy Pender
Tom
Samantha Gates
Elly
Joan Greenwood
Lady Harriet
David Tomlinson
Sir John / Voice of Polar Bear
Jon Pertwee
Salmon
David Jason
(voice)
Una Stubbs
(voice)
