10.0

S3E1 - The Siphonophore

Kwazii and Dashi become entangled in a strange deep-sea creature - a siphonophore.
Sept. 4, 2013, midnight
10.0

S3E2 - The Water Bears

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.
Sept. 5, 2013, midnight

S3E3 - The Cone Snail

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.
Sept. 6, 2013, midnight

S3E4 - The Artificial Reef

When an underwater storm destroys a small reef, Tweak and her crew try to convert the Gup-F into an artificial equivalent.
Sept. 9, 2013, midnight

S3E5 - The Humpback Whales

When a sardine swallows the key to a treasure chest, a humpback whale helps Kwazii track it down.
Sept. 10, 2013, midnight

S3E6 - The 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.
Sept. 11, 2013, midnight

S3E7 - The Sea Pigs

The Octonauts must stop a huge herd of sea pigs before they march blindly into the Mariana Trench - where there will be no access to food. But things get chaotic when Tunip goes missing!
Sept. 12, 2013, midnight

S3E8 - The Yeti Crab

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.
Sept. 13, 2013, midnight

S3E9 - The Barracudas

Shellington and the Vegimals' mission to replant a mangrove forest is put in peril by a school of toothy barracudas.
March 10, 2014, midnight

S3E10 - The Duck-Billed Platypus

While rescuing river creatures after a storm, the Octonauts find a strange egg and come under attack by stinging platypuses.
March 11, 2014, midnight

S3E11 - The Sea Skaters

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.
March 12, 2014, midnight

S3E12 - The Mudskippers

The Octonauts attempt to keep the peace amongst a trio of mudskippers whose home has been flooded.
March 13, 2014, midnight

S3E13 - The Harbour Seal

When Peso's patient, a remora fish, mysteriously disappears, the Octonauts enlist a unique undersea detective - a harbour seal.
March 14, 2014, midnight

S3E14 - The Lion's Mane Jellyfish

A lion's mane jellyfish gets its long and stingy tentacles tangled in the bubble engine, unintentionally flooding the Octopod and causing havoc.
March 17, 2014, midnight

S3E15 - The 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.
March 18, 2014, midnight

S3E16 - The 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.
March 19, 2014, midnight

S3E17 - The 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!
March 20, 2014, midnight

S3E18 - The 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!
March 21, 2014, midnight

S3E19 - The Hammerhead Sharks

The Octonauts meet some hammerheaded sharks, however, they can't sleep too well because Shellington and Professor Inkling have been arguing about who is smarter that they are no longer friends.
Sept. 21, 2015, midnight

S3E20 - The Loggerhead Sea Turtle

After an undersea tremor separates the Gup-X and its crew, Barnacles seeks guidance from a mysterious sea turtle.
Sept. 22, 2015, midnight
trailer
Network: CBeebies
Episode Runtime: 11 min.
Season Runtime: 3003 min.
Released: Oct. 4, 2010
Last Air Date: Nov. 13, 2025, midnight
Status: Returning Series
Certification: TV-Y
Common sense age: 4+ cc

REFRESH DATA
Updated: 4 days ago
Next update: 3 days, 1 hour from now

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