The Rangers are spurred into action by a rash of bizarre attacks on seafood shipments and restaurants. After some research, they find that the attacks are being led by a fish by the name of Captain Finn, who has modified a sunken submarine so that it holds water, allowing Captain Finn and his crew to traverse on land.
- Corey Burton as Dale, Zipper, All Hands
- Frank Buxton as Mr. Starfish, Fisherman, Prawn, Fish
- Peter Cullen as Monterey Jack, Truck Driver
- Jim Cummings as Barnacle Bill, Nemo
- Tress MacNeille as Chip, Gadget Hackwrench, Teenage Girl
- Rob Paulsen as Pizza Teen, Captain Finn, Fish
- The Nautilus appears in the episode as Captain Finn's ship.
- Sealand is based off real life theme park SeaWorld.
Home video releases