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22 Episodes 2013 - 2015
Episode 1
Sat, Nov 15, 201411 mins
Kwazii and Dashi become entangled in a strange deep-sea creature - a siphonophore - and when a geyser blasts it toward the surface, the Octonauts must stop its ascent before it fatally bursts.
Episode 2
Fri, Jan 2, 201523 mins
Water Bears: The Octonauts venture into a dangerous red-hot lava tube to rescue a teeny tiny water bear, who doesn't seem to mind the heat at all! Barracudas: Shellington and the Vegimals mission to replant a mangrove forest is put in peril by a school of toothy barracudas.
Episode 3
Mon, May 12, 201411 mins
Only Peso can save the day when a cone snail invades the Octopod and tranquilizes the crew one by one with its dangerous venom-filled harpoons.
Episode 4
Mon, May 12, 2014
Episode 5
Mon, May 19, 201423 mins
Humpback Whale: When a sardine swallows the key to a treasure chest, a humpback whale helps Kwazii track it down. Platypus: While rescuing river creatures after a storm, the Octonauts find a strange egg and come under attack by stinging platypuses.
Episode 6
Sun, Jun 29, 2014
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.
Episode 7
Fri, Feb 13, 2015
The Octonauts must stop a huge herd of sea pigs before they march blindly into the Mariana Trench - the deepest point on earth.
Episode 8
Fri, Sep 12, 201411 mins
As Tweak tests the Gup-X deep down in the Midnight Zone, a yeti crab cuts a vital electrical wire in the ship and cuts off all power, endangering itself and the Octonauts.
Episode 9
Fri, Jan 2, 2015
Shellington and the Vegimals are on a mission to replant a mangrove forest that is put in peril by a school of toothy barracudas.
Episode 10
Mon, May 19, 2014
While rescuing river creatures after a storm, the octonauts find a strange egg.
Episode 11
Sat, Nov 15, 201411 mins
When Kwazii gets lost at sea aboard the tiny octo-ski, he meets a flotilla of even tinier sea skaters, the only insects of the ocean.
Episode 12
Sat, May 17, 2014
The Octonauts attempt to keep the peace amongst a trio of mudskippers whose home has been flooded.
Episode 13
Fri, Sep 12, 201411 mins
When Peso's patient, a remora fish, mysteriously disappears, the Octonauts enlist a unique undersea detective - a harbour seal.
Episode 14
Fri, May 2, 201411 mins
An enormous lion's mane jellyfish gets its amazingly long tentacles tangled in the Octopod's engine whilst Tweak is working on it and causes havoc.
Episode 15
Fri, Feb 13, 201523 mins
Red Rock Crabs: When Shellington and the crew try to gather some skittish crabs who have drifted away from home, they get help from some old friends. Sea Pigs: The Octonauts must stop a huge herd of sea pigs before they march blindly into the Mariana Trench - the deepest point on earth!
Episode 16
11 mins
Examining a sick sea sponge, Peso is surprised to discover that all sorts of creatures live inside it, treating it like a hotel, a behaviour known as commensalism.
Episode 17
Sat, May 17, 201423 mins
Mudskippers: The Octonauts attempt to keep the peace amongst a trio of mudskippers whose home has been flooded. Immortal Jellyfish: Shellington and the Octonauts try to track an unusual creature: a jellyfish that can transform from old to young repeatedly - and live forever!
Episode 18
Fri, May 2, 201423 mins
Urchin Invasion: 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! Lionsmane Jelly: A lionsmane jellyfish gets its long and stingy tentacles tangled in the bubble engine, unintentionally flooding the Octopod and causing havoc.
Episode 19
Sun, Jun 29, 201423 mins
Pelicans: 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. Hammerhead Sharks: The Octonauts study a group of baby hammerhead sharks, as they hunt on their own for the first time and poke their noses into trouble.
Episode 20
23 mins
Sea Sponge: A sea sponge that houses other sea creatures in its pores suffers from a mysterious illness and Peso must figure out the cause. Loggerhead Sea Turtle: When an underwater tremor separates the Gup-X and its crew, Barnacles seeks guidance from a mysterious sea turtle.
Episode 21
Tue, Apr 22, 201430 mins
When the Octopod goes in for repairs the Octonauts take a vacation, and Peso accompanies Barnacles to help his sister and her new polar cubs learn to navigate the harsh conditions of the frozen arctic.
Episode 22
Tue, Jan 13, 201523 mins
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.