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The Best Episodes of Octonauts Season 4

Every episode of Octonauts Season 4 ranked from best to worst. Discover the Best Episodes of Octonauts Season 4!

The Best Episodes of Octonauts Season 4

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...

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  1. 8.4/10(9 votes)

    #1 - Octonauts and the Octopod Mystery

    S4:E3

    When the Octopod breaks down, Tweak and the crew search for a missing part aboard an abandoned prototype of the ship, not realising something lives there.

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    Director:N/A
    Writer:N/A
  2. 7.8/10(7 votes)

    #2 - Octonauts and the Emperor Penguins

    S4:E10

    The Octonauts journey across a dangerous expanse of ice to help a penguin mother get back to her family.

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    Director:N/A
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  3. 7.8/10(10 votes)

    #3 - Octonauts and the Bomber Worms

    S4:E20

    While diving down to the Midnight Zone, the Octonauts are attacked by bomber worms.

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  4. 7.8/10(10 votes)

    #4 - Octonauts and the Kelp Monster Mystery

    S4:E21

    Dashi teams up with her little sister Koshi to help the Octonauts solve a mysterious disappearance in the Kelp Forest. This is the second episode in which is unknown who sounded the Octo-Alert.

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    Director:N/A
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  5. 7.8/10(9 votes)

    #5 - Octonauts and the Coconut Crisis

    S4:E22

    Kwazii takes a vacation on Coconut Island where he gets hit by some coconuts. Then he and the Octonauts must help their old friends the Coconut Crabs discover who's stealing all their coconuts.

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    Director:N/A
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  6. 7.7/10(8 votes)

    #6 - Octonauts and the Baby Sea Turtles

    S4:E4

    As newborn baby sea turtles make their way to the ocean, the Octonauts must steer them clear a giant wave and hungry predators.

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    Director:N/A
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  8. 7.6/10(9 votes)

    #7 - Octonauts and the Walrus Pups

    S4:E5

    Captain Barnacles and his niece and nephew, Ursa and Orson, must rescue walrus pups who are stranded on a runaway ice floe, before it collides with a huge iceberg!

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  9. 7.6/10(9 votes)

    #8 - Octonauts and the Tree Lobsters

    S4:E8

    When a storm washes Peso onto a mysterious, rocky island, he meets a band of lobster-like insects thought to be extinct.

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  10. 7.6/10(8 votes)

    #9 - Octonauts and the Crawfish

    S4:E11

    When a population of crawfish is stricken by illness, the Octonauts race to find a cure.

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  11. 7.6/10(8 votes)

    #10 - Octonauts and the Yellow Bellied Sea Snakes

    S4:E17

    When Peso gets stranded on a beach with a mass of poisonous snakes after a terrible storm, he and the Octonauts must somehow get them back to the ocean.

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  12. 7.5/10(7 votes)

    #11 - Octonauts and the Loneliest Whale

    S4:E7

    The Octonauts follow a strange song to a lonely humpback whale.

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  13. 7.5/10(11 votes)

    #12 - Octonauts and the Convict Fish

    S4:E9

    The Octonauts evacuate the creatures living around a reef before a large archway collapses, but one stubborn convict fish refuses to move from her burrow.

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  14. 7.5/10(7 votes)

    #13 - Octonauts and the Surfing Snails

    S4:E16

    When surfing snails are swept out to sea, it's up to Dashi and the Octonauts to save them.

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  15. 7.4/10(10 votes)

    #14 - Octonauts and the Hidden Lake

    S4:E2

    The Octonauts are exploring Antarctica, when Shellington discovers strange microscopic creatures living under the ice.

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  16. 7.4/10(11 votes)

    #15 - Octonauts and the Mantis Shrimp

    S4:E6

    The Octonauts must get 2 mantis shrimp to stop fighting before their powerful claw strikes destroy the Octopod.

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  17. 7.4/10(9 votes)

    #16 - Octonauts and the Flamingos

    S4:E12

    The Octonauts find a lost flamingo chick separated from his family and they have to return him there before hungry alligators do!

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  18. 7.3/10(7 votes)

    #17 - Octonauts and the Coelacanth

    S4:E15

    While exploring a dark and spooky cave, The Octonauts find a strange fossil of a powerful prehistoric fish... but it may be more than just a fossil!

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  19. 7.2/10(9 votes)

    #18 - Octonauts and the Tiger Shark

    S4:E13

    When a hungry tiger shark eats the camera that Tweak's turtle friend Sandy gets in the Octopod, she and the Octonauts must rescue her before it eats everything in its path.

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  20. 7.2/10(7 votes)

    #19 - Octonauts and the Spinner Dolphins

    S4:E24

    The Octonauts struggle to save a pod of spinner dolphins who seem to be just swimming in their sleep.

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  21. 7.0/10(6 votes)

    #20 - Octonauts and Operation Cooperation

    S4:E19

    After Shellington crashes the GUP-D for the 3rd time, he and Kwazii team up with moray eels and grouper fish to help pick up the pieces and fix the vehicle before daylight occurs.

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  22. 6.9/10(8 votes)

    #21 - Octonauts and the Sunfish

    S4:E14

    When a huge sunfish enters the GUP-E, Peso and Kwazii must somehow get the large fish out of the Gup. Eventually they find out it's a Sunfish a fish with no fins.

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  23. 6.8/10(7 votes)

    #22 - Octonauts and the Hippos

    S4:E18

    Trying to return home from a mission along an African river, the Octonauts have trouble getting past a gang of large, mud-splatting, territorial hippos.

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  24. 6.7/10(11 votes)

    #23 - Octonauts and the Poison Dart Frogs

    S4:E1

    When a giant wave hurls Amazon River creatures up into the trees, the Octonauts must get them down safely, without disturbing poison dart frogs who live there.

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  25. NaN/10(0 votes)

    #24 - Octonauts and the Baby Gator

    S4:E23

    Kwazii adopts a baby alligator naming him Nipper, but when it escapes the Octopod, he and the Octonauts must rescue him.

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Season 4 Ratings Summary

"Octonauts and the Octopod Mystery" is the best rated episode of "Octonauts" season 4. It scored 8.4/10 based on 9 votes. Directed by N/A and written by N/A, it aired on 9/25/2015. This episode is rated 0.6 points higher than the second-best, "Octonauts and the Emperor Penguins".