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Spoiler warning: This section contains information relating to the plot, ending details or information of any kind.

This page will show all the episodes of the animated series of The Deep that has aired on CBBC.

Season 1


Season 2


Season 3

Overall No. Season No. Title Original Airdate Aired On
40 1 The Treasure March 4, 2019 CBBC
"The Dark Orca pirates unwittingly steal a treasure that can awaken a Monumential and possibly destroy them and the Nektons."
41 2 Off Line March 5, 2019 CBBC
"The internet being down is the worst thing imaginable for Ant and Fontaine - until Ant finds the sea monster responsible! Can he save both?"
42 3 Friends In Deep Places March 6, 2019 CBBC
"Trying to rescue Jess Gorman in an underwater cave proves dangerous for Ant and Fontaine until a Manatee comes to their aid."
43 4 Just Eaten March 7, 2019 CBBC
"The Aronnax and Alpheus' sub are trapped within a giant Jellyfish Monumential. They've been eaten and the jellyfish won't let food out."
44 5 Family Ties March 11, 2019 CBBC
"Devil Daniels insists he's relocating a dangerous killer whale. But it is a scam that turns dangerous - for Ant and the whale."
45 6 The Circle Game March 12, 2019 CBBC
"The Nektons find an underwater crop circle. It's made by a giant male puffer fish to attract a mate. Can Ant help the romance along?"
46 7 The Unicorn March 13, 2019 CBBC
"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."
47 8 Purple Tide March 14, 2019 CBBC
"The Nektons try to save an island from "The Purple Tide" that legend says will destroy everything. To save it, they need to find "The Protector"."
48 9 The Race March 18, 2019 CBBC
"Ant wants to go faster than the fastest fish in the sea - the sailfish. But he hasn't counted on a deadly oil spill."
49 10 Kidnapped March 19, 2019 CBBC
"Jeffrey is kidnapped, in his "Jeffrey Knight", by Dark Orca pirates. Can Jeffrey turn the tables and save himself?"
50 11 More Thunder and Lightning March 20, 2019 CBBC
"The Nektons return to the mysterious Lemurian Gates they found previously. Exploring within, they're stunned to discover Lemuria is here."
51 12 Lemuria March 21, 2019 CBBC
"The Nektons explore Lemuria but Fontaine realises the others are being affected by a dangerous algae. Can she find an antidote and save them?
52 13 The Sceptre Unknown CBBC
"The Nektons find the Queen's sceptre. But when faced with the Kraken and the Electric Ray Monumential together, Ant can't make it work."