Seasons & Episodes
Thirsty Times
Obo the computer is not working: Balty and Ponto have emptied the fresh water tanks on board the Hydronica while playing
Caught in a Net
Balty is caught in a drift net. How can he free himself? “Wait until the net floats up to the surface” advise the fi
Taste of the Sea
Salmon really are surprising fish! They travel up rivers to lay their eggs where they were born. They find their way by
Sounds of the Sea
Rudy the young porpoise has lost his mother. He has tried calling her, she cannot hear him over the noise of the boats.
Oily Feathers
Snail's Tale
Our heroes meet some starving snails. They cannot find the seaweed they feed on. The natural environment appears complet
Out of the Cold
Paul the emperor penguin needs the Hydronauts help. He is injured and cannot take care of his egg any more. A father who
Sixth Sense
Sharks are terrifying animals. And Balty is not going to argue. When he and Neptuna meet Paulo, the hammerhead shark, Ba
Treasure Hunt
The energy stone that makes Obo the computer work has disappeared. Neptuna and her friends must replace it so that they
Beauty Parade
Leon, the cleaning fish, lives on a coral reef. Like many species, he finds what he needs to live there. But the fish ha
A-maze-d
Tamara the turtle is lost: she left to lay her eggs on the beach and has not returned to the water at nightfall. Theo, h
Rapture of the Deep
The Hydronica has broken down at the bottom of the ocean. How can it be fixed if nobody can go outside because of the wa
Manatee
The manatees are very greedy animals. So when Johnny the young manatee falls ill, Neptuna and her friends think it is si
Whale Song
The whales seduce each other by singing. But our heroes are there to help him compose his song. And when Barnaby and his
The Road to Freedom
The Hydronauts meet Corky, a killer whale. But Corky is not like all the others. He once lived in an amusement park and
On the Ice
Because the ice is melting and hunting is difficult, Albert the polar bear and come to look for food on board the Hydron
A Lucky Day
The coral are preparing for a mysterious event. All would be going well if Ponto was not having such a run of bad luck.
Hide and Seek
It is not only Ponto and Balty who like playing hide and seek. Some little marine animals hide under driftwood to protec
A Whale for a Meal
The Hydronauts want to watch the right whales. But they are hiding, scared by too many gulls in the area. How can the wh
All for One, One for All
Dolphins live as a group so that they can better protect their young from the dangers of the sea. Not only do they prote
Phantom of the Sea
Balty is determined he has seen a ghost. On board, nobody believes him, especially not Ponto! Everybody knows there’s
Home Sweet Home
Ponto and Balty are fighting, they each want their own space. A bit like the crocodiles… While Neptuna helps Jonas the
The Kelp Ranger
The Hydronauts meet Otto, the ranger in an enormous forest of seaweed. But Otto looks after the forest on his own. It’
Low Tide
Ponto is sure that today Balty will meet the mammal of his life. While looking for her the Hydronauts meet many marine a
Doctor at Sea
Neptuna has lost her memory. Obo does not have a single remedy for her. A fish tells them that seahorses can cure numero
Close Encounters
Balty is sure of what he has heard: Neptuna wants to return to her planet without telling them! When Ponto thinks he has
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