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The Best Episodes of Octonauts Season 3

Every episode of Octonauts Season 3 ranked from best to worst. Discover the Best Episodes of Octonauts Season 3!

Binge this in 3h 40m•Peaking at 9.0/10

Follows an underwater exploring crew made up of stylized anthropomorphic animals, a team of eight adventurers who live in an undersea base, the Octopod, from where they go on undersea adventures with the help of

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Episode Rankings

  1. #1 Fan Favorite
    Octonauts Season 3 Episode 2 - The Water Bears
    9.0/10(16 votes)

    S3:E2

    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.

    Director:Unknown
    Writer:Unknown

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  2. Octonauts Season 3 Episode 1 - The Siphonophore
    8.7/10(12 votes)

    S3:E1

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

    Director:Unknown
    Writer:Unknown

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  3. Octonauts Season 3 Episode 18 - The Urchin Invasion
    8.6/10(11 votes)

    S3:E18

    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!

    Director:Unknown
    Writer:Unknown

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  4. Octonauts Season 3 Episode 17 - The Immortal Jellyfish
    8.5/10(12 votes)

    S3:E17

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

    Director:Unknown
    Writer:Unknown

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  5. Octonauts Season 3 Episode 9 - The Barracudas
    8.4/10(10 votes)

    S3:E9

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

    Director:Unknown
    Writer:Unknown

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  6. Octonauts Season 3 Episode 3 - The Cone Snail
    8.3/10(13 votes)

    S3:E3

    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.

    Director:Unknown
    Writer:Unknown

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  7. Octonauts Season 3 Episode 8 - The Yeti Crab
    8.3/10(11 votes)

    S3:E8

    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.

    Director:Unknown
    Writer:Unknown

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  8. Octonauts Season 3 Episode 11 - The Sea Skaters
    8.3/10(12 votes)

    S3:E11

    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.

    Director:Unknown
    Writer:Unknown

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  9. Octonauts Season 3 Episode 6 - The Pelicans
    8.2/10(11 votes)

    S3:E6

    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.

    Director:Unknown
    Writer:Unknown

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  10. Octonauts Season 3 Episode 12 - The Mudskippers
    8.2/10(11 votes)

    S3:E12

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

    Director:Unknown
    Writer:Unknown

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  11. Octonauts Season 3 Episode 16 - The Sea Sponge
    8.1/10(12 votes)

    S3:E16

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

    Director:Unknown
    Writer:Unknown

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  12. Octonauts Season 3 Episode 19 - The Hammerhead Sharks
    8.1/10(12 votes)

    S3:E19

    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.

    Director:Unknown
    Writer:Unknown

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  13. Octonauts Season 3 Episode 4 - The Artificial Reef
    8.0/10(12 votes)

    S3:E4

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

    Director:Unknown
    Writer:Unknown

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  14. Octonauts Season 3 Episode 13 - The Harbour Seal
    8.0/10(11 votes)

    S3:E13

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

    Director:Unknown
    Writer:Unknown

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  15. Octonauts Season 3 Episode 10 - The Duck-Billed Platypus
    7.9/10(14 votes)

    S3:E10

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

    Director:Unknown
    Writer:Unknown

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  16. Octonauts Season 3 Episode 7 - The Sea Pigs
    7.8/10(14 votes)

    S3:E7

    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!

    Director:Unknown
    Writer:Unknown

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  17. Octonauts Season 3 Episode 15 - The Red Rock Crabs
    7.8/10(11 votes)

    S3:E15

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

    Director:Unknown
    Writer:Unknown

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  18. Octonauts Season 3 Episode 5 - The Humpback Whales
    7.7/10(11 votes)

    S3:E5

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

    Director:Unknown
    Writer:Unknown

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  19. Octonauts Season 3 Episode 14 - The Lion's Mane Jellyfish
    7.7/10(11 votes)

    S3:E14

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

    Director:Unknown
    Writer:Unknown

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  20. Octonauts Season 3 Episode 20 - The Loggerhead Sea Turtle
    7.6/10(12 votes)

    S3:E20

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

    Director:Unknown
    Writer:Unknown

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Season 3 Ratings Summary

"The Water Bears" is the best rated episode of "Octonauts" season 3. It scored 9/10 based on 16 votes. Directed by Unknown and written by Unknown, it aired on 9/5/2013. This episode is rated 0.3 points higher than the second-best, "The Siphonophore".