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Season 3 2013

  • 2013-09-04T12:30:00-07:00 on CBeebies
  • 15 mins
  • 6 hours, 21 mins
  • United Kingdom
  • English
  • Animation, Action, Adventure

Animated deep sea adventure series. Captain Barnacles and his intrepid band of explorers roam the oceans in search of adventure and fun. Whether it's a perilous voyage to the bottom of the sea or the piratey pursuit of a giant squid, the Octonauts leap into action and always prove that eight heads are better than one.

22 episodes

3x01 The Siphonophore

  • Season Premiere

    2013-09-04T12:30:00-07:00 — 15 mins

Kwazii and Dashi become entangled in a strange deep-sea creature - a siphonophore.

3x02 The Waterbears

  • 2013-09-05T12:30:00-07:00 — 24 mins

The gang ventures into a red-hot lava tube to rescue a tiny water bear that does not seem to mind the heat at all.

3x03 The Cone Snail

  • 2013-09-06T12:30:00-07:00 — 24 mins

Peso sets out to save the day when a cone snail invades the octopod and picks off the crew one by one with its dangerous harpoons.

3x04 The Artificial Reef

  • 2013-09-09T12:30:00-07:00 — 15 mins

When an underwater storm destroys a small reef, Tweak and her crew try to convert the Gup-F into an artificial equivalent.

3x05 The Humpback Whales

  • 2013-09-10T12:30:00-07:00 — 24 mins

When a sardine swallows the key to a treasure chest, a humpback whale helps Kwazii track it down.

3x06 The Pelicans

  • 2013-09-11T12:30:00-07:00 — 24 mins

When a floating garbage patch endangers a flock of pelicans and other sea creatures, the Octonauts and the birds work together to clean it up.

3x07 The Sea Pigs

  • 2013-09-12T12:30:00-07:00 — 15 mins

The Octonauts must stop a huge herd of sea pigs before they march blindly into the Mariana Trench - the deepest point on earth!

3x08 The Yeti Crab

  • 2013-09-13T12:30:00-07:00 — 15 mins

As Tweak tests the Gup-X deep down in the Midnight Zone, a yeti crab damages the ship, endangering itself and the Octonauts.

3x09 The Barracudas

  • 2014-03-10T13:30:00-07:00 — 15 mins

Shellington and the Vegimals' mission to replant a mangrove forest is put in peril by a school of toothy barracudas.

3x10 The Duck-Billed Platypus

  • 2014-03-11T13:30:00-07:00 — 15 mins

While rescuing river creatures after a storm, the Octonauts find a strange egg and come under attack by stinging platypuses.

3x11 The Sea Skaters

  • 2013-10-07T12:30:00-07:00 — 24 mins

When Kwazii gets lost at sea aboard the tiny octo-ski, he meets a flotilla of even tinier sea skaters - the only insects who live on the ocean.

3x12 The Mudskippers

  • 2014-03-13T13:30:00-07:00 — 15 mins

The Octonauts attempt to keep the peace amongst a trio of mudskippers whose home has been flooded.

3x13 The Harbor Seal

  • 2014-03-14T13:30:00-07:00 — 24 mins

When Peso's patient, a remora fish, mysteriously disappears, the Octonauts enlist a unique undersea detective - a harbour seal.

3x14 The Lion's Mane Jellyfish

  • 2014-03-17T13:30:00-07:00 — 15 mins

A lion's mane jellyfish gets its long and stingy tentacles tangled in the bubble engine, unintentionally flooding the Octopod and causing havoc.

3x15 The Red Rock Crabs

  • 2014-03-18T13:30:00-07:00 — 24 mins

When Shellington and the crew try to gather some skittish crabs who have drifted away from home, they get help from some old friends.

3x16 The Sea Sponge

  • 2014-03-19T13:30:00-07:00 — 24 mins

A sea sponge that houses other sea creatures in its pores suffers from a mysterious illness and Peso must figure out the cause.

3x17 The Immortal Jellyfish

  • 2014-03-20T13:30:00-07:00 — 15 mins

Shellington and the Octonauts try to track an unusual creature: a jellyfish that can transform from old to young repeatedly - and live forever!

3x18 The Urchin Invasion

  • 2014-03-21T13:30:00-07:00 — 24 mins

The Octonauts head to the kelp forest to visit Shellington's sister, Pearl, and her newborn son Periwinkle - only to find the forest endangered by an infestation of kelp-eating urchins!

3x19 The Hammerhead Sharks

  • 2014-06-29T12:30:00-07:00 — 15 mins

The Octonauts study a group of baby hammerhead sharks as they hunt for food.

3x20 The Loggerhead Sea Turtle

  • 2013-10-08T12:30:00-07:00 — 15 mins

When an underwater tremor separates the Gup-X and its crew, Barnacles seeks guidance from a mysterious sea turtle.


  • no air date — 15 mins