Submarine Jim
Season 1
Created by: Frédéric Martin
Network: CBBC
Season aired: 2026-01-11
Overview
A naive young Dolphin named Jim finds himself in charge of navigating the first-ever submarine on wheels! Jim is joined by his motley crew of underwater buddies as they journey across land and sea. Their water-filled tube has left the ocean to seek out an unlikely destination, the pristine waters of ‘Fishland.’ Luckily, with no set route in sight, their journey promises to be a long and winding one.
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Episodes · 26
Bob
A sea urchin harasses Jim - can he find a way out?
How to Shop
Jim dives into Cyril’s bold plan to get a red sauce humans use.
Foam Party
Jim feels left out when sardines throw a party he is not invited to.
King Pong
A ping-pong tournament exposes Jim and Bianca’s true skill levels.
Big Boy Pants
Jim tries to act more grown up to avoid a mutiny over the menu.
Off the Radar
Bianca’s past returns and the sub goes undercover to protect her.
The Vacation
Cyril secretly tags along on Jim and Bianca’s camping trip.
Road Rage
Jim gets behind the wheel to confront a road hog.
ScubaScooper
Jim’s robot cleaner thrills the sub - until limpets go missing.
The Hunt for the Red Pompom
Jim must find the pompom he took by mistake.
Going, Going... Gone!
Jim has to let Yannick go, but his charm makes it impossible.
The Dolphin for the Job
Jim goes for a game of ping-pong, but his crew barely notices.
Saving Private Sardine
Jim sets out to rescue sardines lost during a newspaper run.
Crunchyfish
A fake breaded mascot shatters Jim’s belief system.
Pit Stop
Jim implements various water-saving measures in the submarine.
Bianca's Crazy Day
Bianca must pay Roy’s ransom without Jim finding out!
The Expert
Jim and Bianca embark on a risky mission to retrieve onions.
Portrait of a Captain
Jim commissions bold portraits to inspire his crew.
The Sub Teacher
Jim swaps command for the struggles of student life.
The Lake Break
Jim takes the crew camping at the bottom of a lake.
USS Mean Shark
The sub is haunted by the USS Mean Shark - but what is its goal?
The Wonder of Choice-Making
Jim learns the fortune teller is actually Cyril in disguise.
Movie Night
Jim captures a human to find out the ending of a movie.
The Condiment Incident
A jar of pickles contaminates the submarine, causing chaos.
The Two-Headed Sub
Jim is sick, so Cyril and Bianca take over - together.
Captain Nice
Jim tries to be Captain Nice, but the Urchins take advantage.
