The Deep
The Deep is a TV show on CBBC. Ant and Fontaine follow clues to find their missing grandparents that lead them all over the amazing underwater world! The program has been available since 2024. A total of 52 episodes have been broadcast, most recently in September 2025.
Last episode
The Deep
Ant and Fontaine discover the secret of the Bajau Laut people, a tribe of sea nomads living in the South China Sea. The pair are determined to help them - but how do you find a fish that walks?
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Ant has created a clever machine to clean up a vast oceanic rubbish dump. However, when the machine is been eaten by a huge creature, it's up to the Nektons to save it.
The Nektons are busy recovering sunken shipping containers, so when Bethany the fish finds herself in danger, only Jeffrey can save her!
The Nektons help locate a legendary Singaporean glass cabinet. However, they discover it is guarded by a terrifying and familiar creature.
Mad Madeline steals the dangerous Sceptre of Queen Dorius.
A mysterious dolphin in a sophisticated electronic harness zaps all the Rover's power!
Does Dolos really have a lead on finding Ant’s grandparents? Or is he leading the Nektons into a dangerous chasm between moving tectonic plates for nefarious purposes?
Three baby monumental turtles hatch, and they are the size of city blocks! The playful babies accidentally sink a fishing trawler!
Ant searches a deep chasm for clues to his grandparents' fate but is stunned to find Mad Madeline there!
Ant and Fontaine realise that their grandparents found Lemuria before them - but where are they now?
Series 3
The Nektons find the Queen’s sceptre. But faced with the Kraken and the Electric Ray Monumential together, can Ant make it work?
The Nektons explore Lemuria but Fontaine realises the others are being affected by a dangerous algae. Can she find an antidote?
The Nektons return to the mysterious Lemurian Gates they found previously. Exploring within, they’re stunned to discover Lemuria is here!
Jeffrey is kidnapped, in his 'Jeffrey Knight', by Dark Orca pirates. Can Jeffrey turn the tables and save himself?
Ant wants to go faster than the speediest fish in the sea - the sailfish. But he hasn’t counted on a deadly oil spill that threatens to destroy them.
The Nektons try to save an island from the 'purple tide' that legend says will destroy everything. To save it, they need to locate the Protector.
Ant tries to locate a 'diamond-horned sea-unicorn' as a present for Fontaine’s birthday. But Dolos and Devil Daniels are also hunting it.
The Nektons find an amazing underwater crop circle. It’s been built by a giant male puffer fish to attract a mate! Can Ant help the romance along?
Devil Daniels insists he’s relocating a dangerous killer whale. But it’s a scam that turns dangerous! Our heroes need to save Ant and the whale.
The Aronnax and Alpheus’s sub are trapped within a giant jellyfish! They’ve been eaten and the jellyfish won’t let food out!