Before Spottyman has time to sit down in his bath, the alarm rings and off they go to save the blue whale stuck on a lonely beach in North Wales.
- Derek Griffiths as Superted
- Peter Hawkins as The Narrator
- Jon Pertwee as Spottyman
- Victor Spinetti as Texas Pete
- Roy Kinnear as Bulk
- Melvyn Hayes as Skeleton
- Susan Blu as The Little Girl
- Billy Gilbert as The Whales
The Submarine and The Boat's theme to the Series 2 episode, Superted and the Gun Smugglers, & the Series 3 episode, Superted and the Whales.