Animated deep sea adventures. The Octonauts head to the kelp forest to visit Shellington's sister, Pearl, and her newborn son Periwinkle.Source: CBeebies
Series 1 - The Whale Shark
Animated deep sea adventures with Captain Barnacles and his band of explorers. Dashi is swallowed by a whale shark so the Octonauts venture inside to rescue her.
Series 3: 20. Loggerhead Sea Turtle
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.
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 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 3 - Lion's Mane Jellyfish
Animated deep sea adventures. A lion's mane jellyfish gets its long and stingy tentacles tangled in the bubble engine, unintentionally flooding the Octopod.
Series 3 - Harbour Seal
Animated deep-sea adventures with Captain Barnacles and his explorers. When Peso's patient mysteriously disappears, the Octonauts enlist a unique undersea detective.
Series 4: 4. Octonauts And The Baby Sea Turtles
Series 3 - Yeti Crab
Animated deep sea adventures with Captain Barnacles and his explorers. A yeti crab damages the ship, endangering itself and the Octonauts.
Series 4: 7. Octonauts And The Loneliest Whale
Series 4: 8. Octonauts And The Tree Lobsters
Series 4: 10. Octonauts And The Emperor Penguins
Series 4: 2. Octonauts And The Hidden Lake
Series 4: 9. Octonauts And The Convict Fish
Series 4: 5. Octonauts And The Walrus Pups
Creature Reports: 24. Anemones
Series 4: 6. Octonauts And The Mantis Shrimp