The Best Episodes of Octonauts Season 4

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

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

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

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

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

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

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

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

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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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