The Deep - Season 3

The Dark Orca pirates unwittingly steal a treasure that could awaken a Monumential.

The Internet being down is the worst thing imaginable for Ant and Fontaine - until Ant finds the sea monster responsible for this. Can he save both?

Trying to rescue Jess Gorman in an underwater cave proves dangerous for Ant and Fontaine until a manatee comes to their aid. But is it too late?

The Aronnax and Alpheus's sub are trapped within a giant jellyfish. They've been eaten and the jellyfish won't let food out.

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 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?

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 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 wants to go faster than the fastest fish in the sea - the sailfish. But he hasn't counted on a deadly oil spill that threatens to destroy them.

Jeffrey is kidnapped, in his 'Jeffrey Knight', by Dark Orca pirates. Can Jeffrey turn the tables and save himself?

The Nektons return to the mysterious Lemurian Gates they found previously. Exploring within, they're stunned to discover Lemuria is here.

The Nektons explore Lemuria but Fontaine realises the others are being affected by a dangerous algae. Can she find an antidote?

The Nektons find the Queen's sceptre. But faced with the Kraken and the Electric Ray Monumential together, can Ant make it work?