A dragon hunting expedition leads Ant to an ancient scroll that holds clues to an amazing mystery. But his family are trapped by the dragon and only Ant can save them!

The Dark Orca pirates attack, they believe the Nektons have treasure aboard their sub.

An artificial intelligence programmed to run the sub and protect the Nektons tries to stop their rescue mission because it's too risky.

The object that Will and Ant are retrieving from the deepest part of the ocean is not what they expected.

Are aliens stealing things from a Japanese island and dragging them underwater? The Nektons investigate and find something even more dangerous and amazing!

Someone stole the rarest tortoise in the world and the Nektons are searching for it.

Captain Hammerhead captures the Nektons aboard his submarine! But when his sub begins to sink, only the Aronnax can help.

To find a piece of the mysterious Ephemychron, the Nektons have to fight off whirlpools, zero visibility and giant, robotic jellyfish.

The Nektons explore an underwater cave system inhabited by huge, prehistoric crocodiles. Ant befriends a new hatchling, much to the annoyance of its mother.

Ant and Fontaine hunt for the rarest of ocean creatures, the colossal squid. But it turns out to be smarter than them and thinks they look tasty.

The Nektons meet online superstar Devil Daniels, who will stop at nothing to reach the fame that he seeks.

Ant believes that a ghost sub is at sail somewhere out in the ocean - but when he actually finds it, the truth is even stranger.

While diving into a rare 'blue hole', a sinkhole in the middle of the sea, strange things begin to happen to the Nektons.

Ant and Fontaine have to deal with young fans visiting the Aronnax when they have to rescue a whale calf.

Dolos has sold two maps leading to the same treasure - one to the Nektons, the other to the pirates! Now it's a race to get there first.

As the Nektons explore a mysterious tunnel behind a huge undersea waterfall, strange creatures and strong currents surprise them at every turn.

The Nektons are arrested for stealing. Ant and Fontaine escape to prove their innocence, but whoever set them up is already two steps ahead.

Fontaine and Smiling Finn get stuck inside a giant clam as the dark orca pirates battle the Nektons for the giant pearl within.

Proteus, leader of the mysterious Guardians, traps the Aronnax in a magnetic field and kidnaps Ant, believing he is the key to finding Lemuria.

Devil Daniels, Monster Hunter, attempts to hunt a sire - a mythical creature whose song lures sailors to their doom.

A fish invades Jeffrey's home on the Aronnax. How can she get rid of it and its bad luck?

The Rover is swallowed by a huge prehistoric shark. Will and Fontaine manage to cling to its gills just inside its mouth.

The Nektons are trying to identify a unique life form. They've never seen it, they've only heard its sound: 'Bloop'.

A weird glowing fish has lured every fish in the area to its bioluminescence, and Kaiko and Will also fall under its spell.

While fighting over Viking treasure, the Nektons take over the Dark Orca. But the pirates in turn take over the Aronnax.

The Nektons explore a floating island and find the final piece of the Ephemychron in a cave. But the island has a terrible secret.