Series 3: 20. Loggerhead Sea Turtle
Series 3 - Water Bears
Animated deep sea adventures with Captain Barnacles and his explorers. The Octonauts venture into a dangerous red-hot lava tube to rescue a teeny tiny water bear.
The Over, Under Adventure
Animated deep sea adventure series. The Octonauts' mission to explore Antarctica becomes a desperate rescue as a group of sea stars and urchins are threatened by a brinicle.
Series 3 - Siphonophore
Animated deep sea adventures with Captain Barnacles and his explorers. Kwazii and Dashi become entangled in a strange deep-sea creature - a siphonophore.
Series 3: 19. Hammerhead Sharks
Series 3 - Urchin Invasion
Animated deep sea adventures. The Octonauts head to the kelp forest to visit Shellington's sister, Pearl, and her newborn son Periwinkle.
Series 3 - Immortal Jellyfish
Animated deep sea adventures. Shellington and the Octonauts try to track an unusual creature: a jellyfish that can live forever!
Series 3 - Sea Sponge
Animated deep-sea adventures. A sea sponge that houses other sea creatures in its pores suffers from a mysterious illness and Peso must figure out the cause.
Series 3 - Red Rock Crabs
Animated deep sea adventures. When Shellington and the crew try to gather some skittish crabs who have drifted away from home, they get help from some old friends.
Series 2 - Gulper Eels
Animated deep sea adventures with Captain Barnacles and his explorers. Hungry gulper eels as well as undersea tremors threaten Inkling and Kwazii.
The Mariana Trench Adventure
Special episode of the animated deep sea adventure series. Tweak has designed a brand-new Deep Sea Station to study the deepest, darkest reaches of the ocean.
Octonauts Special: Great Swamp Search
Octonauts Special: Operation Deep Freeze
Octonauts Special: The Amazon Adventure
Animated series. 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!
Series 4: 7. Octonauts And The Loneliest Whale
Series 1 - The Great Penguin Race
Animated deep sea adventures with Captain Barnacles and his explorers. The Octonauts cheer Peso on as he goes home to compete in an annual tournament.
Series 3 - Barracudas
Animated deep-sea adventures with Captain Barnacles and his explorers. Shellington and the Vegimals are on a mission to replant a mangrove forest.
Creature Reports - The Snot Sea Cucumber
The Octonauts sing about underwater creatures. The Octonauts share a few fun facts about the snot sea cucumber.
Series 1 - The Decorator Crab
Animated deep sea adventures with Captain Barnacles and his explorers. When important objects go missing from their ship, the Octonauts watch out for the thief.
Creature Reports - The Giant Squid
Captain Barnacles and his intrepid band of explorers, the Octonauts, sing about underwater creatures. The Octonauts share some fun facts about the giant squid.