1The Great Penguin Race
The Octonauts cheer Peso on as he goes home to compete against an awesomely athletic penguin in an annual tournament: the Iron Clam Competition.
2The Great Christmas Rescue
The Octonauts travel to Professor Inkling's childhood home for Christmas, an undersea mountain. But they discover that a rockslide has endangered the local creatures - including a rare species of golden coral, and Inkling's little octopus nephew, Squirt! With the help of Tweak's latest invention, the Gup X, the Octonauts must rescue the creatures and save Christmas.
3The Amazon Adventure
In this special episode, the Octonauts travel deep down the Amazon river in search of a lost city - and Kwazii's long lost grandfather, Calico Jack!
4The Mariana Trench Adventure
Tweak has designed a brand-new Deep Sea Station to study the deepest, darkest reaches of the ocean, but the Octonauts face multiple challenges: from getting it down there, to the extreme environment and strange, prehistoric creatures that greet them once they arrive.
5The Very Vegimal Christmas
Christmas special of the animated deep sea adventure series. The Vegimals' plans for a Christmas feast aboard the Octopod are interrupted when the Octonauts are all entangled in a gigantic blob of sea snot!
6The Over Under Adventure
The Octonauts' mission to explore Antarctica becomes a desperate rescue as a group of sea stars and urchins are threatened by a brinicle - a rare underwater icicle that can freeze creatures on the sea bed.
7The Great Arctic Adventure
Peso goes with Barnacles to help his sister and her new polar cubs learn to navigate the harsh conditions of the frozen arctic.
8Operation Deep Freeze
9The Great Swamp Search