1 - The 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.

2 - The 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.

3 - The 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!

4 - The 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.

5 - The 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!

6 - The 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.

7 - The 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.

8 - Operation Deep Freeze

9 - The Great Swamp Search

10 - Octonauts and the Great Swamp Search

Tweak and the Octonauts go to The Everglades to visit her dad, Ranger Marsh and help him rescue some non-native creatures before a storm hits. The team's recently built GUP-K is also there to save the day.

11 - Octonauts and the Caves of Sac Actun

The Octonauts embarked on an underwater adventure navigating a set of challenging caves to help a small octopus read return home to the Caribbean Sea.

12 - Octonauts and the Great Barrier Reef

In this musical special the Octonauts must find a way to hold back hungry swarms of Crown of Thorns starfish to save a new friend's fragile reef home.

13 - Octonauts and the Ring of Fire

The Octonauts create a Mantis Shrimp Robot to save the oceanic creatures from a tsunami and volcanic eruptions in the Pacific Ring of Fire.