The Best Episodes of Octonauts Season 3

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.

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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.

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

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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!

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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.

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

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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.

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

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

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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.

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

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

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

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

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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!

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

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

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

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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.

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

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