After their grandparents mysteriously disappeared a few years ago, Ant and Fontaine thought they'd never see them again. But new evidence shows they could still be out there! The Nekton's quest will take them all over the world and the stakes have never been higher!
Ant and Fontaine realise their grandparents found Lemuria before them! But where are they now? The Nektons follow the trail they left but run into predatory giant Sand Strikers! Was this the fate of their grandparents?
Ant searches a deep chasm for clues to his grandparent's fate. He stunned to find Mad Madeline there! She's been looking for the biggest sunken treasure ever! But all she's managed to find is the biggest monster!
Three baby Monumential turtles hatch and they're the size of city blocks! The playful babies accidentally sink a fishing trawler! Can the Nektons wrangle these creatures before they sink even more ships?
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?
A mysterious dolphin in a sophisticated electronic harness zaps all the power from the Rover! Ant and Fontaine manage to remove the harness, but can they rehabilitate this cybernetic dolphin to survive in the wild?
Mad Madeline steals the dangerous Sceptre of Queen Dorius! The Nektons find her, but she loses the sceptre! To get it back, Ant must face his fear of sawfish, aka fish with a "hedge-trimmer on their face!"
The Nektons help locate a legendary Singaporean glass cabinet, but discover it's guarded by a terrifying and familiar creature! Last time, they barely escaped with their lives! Will they be as lucky this time around?
Devil Daniels is copying all Ant's ideas. He even has his own pet fish-Bethany! The Nektons are busy recovering sunken shipping containers, so when Bethany finds herself in danger, only Jeffrey can save her!
A clever machine Ant created to clean up a vast oceanic rubbish dump, has been eaten by a huge creature! Can the Nektons save Ant's machine, save the creature, and try to save the planet all in one day?
The Bajau Laut people are sea nomads living in the South China Sea, and they're hiding a secret. When Ant and Fontaine discover the secret, they're determined to help them. But how do you find a fish that walks?
