Octonauts - Episode Guide

The Octonauts, for more deep sea adventures. While exploring a dark and spooky cave, the Octonauts discover the fossil of a powerful, prehistoric fish... but it may be more than just a fossil.

Octonauts and the Hippos

Episode: 4x18 | Airdate: Sep 20, 2017 (11 min)

Returning home from a mission along an African river, the Octonauts encounter a gang of large, territorial hippos.

Octonauts and Operation Cooperation

Episode: 4x19 | Airdate: Sep 27, 2017 (11 min)

After Shellington crashes the Gup-D, he and Kwazii team up with a moray eel and grouper fish to pick up the pieces.

Octonauts and the Bomber Worms

Episode: 4x20 | Airdate: Oct 23, 2017 (11 min)

While diving down to the Midnight Zone, the Octonauts are attacked by bomber worms and are enlisted to rescue an injured member of their troop.

Octonauts and the Kelp Monster Mystery

Episode: 4x21 | Airdate: Oct 24, 2017 (11 min)

Dashi teams up with her little sister Koshi to solve a mysterious disappearance in a kelp forest.

Octonauts and the Coconut Crisis

Episode: 4x22 | Airdate: Oct 25, 2017 (11 min)

Kwazii and the Octonauts help their friends the coconut crabs discover who is stealing their coconuts.

Octonauts and the Baby Alligator Search

Episode: 4x23 | Airdate: Oct 26, 2017 (11 min)

Kwazii adopts a baby alligator, but when it escapes from the Octopod he must rescue the tiny creature from ocean currents and hungry predators.

Octonauts and the Spinner Dolphins

Episode: 4x24 | Airdate: Oct 27, 2017 (11 min)

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

Season 5

Blue Fin Tuna

Episode: 5x01 | Airdate: Mar 27, 2023 (15 min)

After an encounter with a school of migrating tuna, the Octonauts discover that one of the speedy fish, Tina, has been left behind. And she's injured! Poor Tina has a hook stuck in her mouth and is too weak to swim. After Peso tends to her wound, the Octonauts agree to help get her to the tuna spawning grounds. But they'll have to be quick: egg-laying season doesn't last long. Luckily, Tweak's latest gup, the Gup-R, is the fastest she's ever built! The Octonauts use it to tow Tina, but when the Gup-R's battery dies, how will they catch up to the rest of her school?

Blue Whale Rescue

Episode: 5x02 | Airdate: Mar 28, 2023 (15 min)

When Kwazii discovers a blue whale with an injured tail, the Octonauts attempt to use a giant net and Octofloats to keep it from sinking. Meanwhile, Peso and Tweak collaborate on a special brace for its tail, and Kwazii, Dashi and Shellington try to find it enough food. But when the supporting net breaks, the Octonauts have to launch an emergency free-fall rescue!

Whales of Mystery

Episode: 5x03 | Airdate: Mar 29, 2023 (15 min)

Shellington is excited to find the distinctive tooth of a very rare creature, the spade-toothed beaked whale. Now, the Octonauts must find the tooth's owner, so Shellington can study it, and so that Peso can help replace its tooth. But it won't be easy: spade-toothed beaked whales like to be left alone and can dive very deep.

Ghost Ship

Episode: 5x04 | Airdate: Mar 30, 2023 (15 min)

The Octonauts follow a trail of deep-sea debris to its source: a derelict ship floating unmanned on the surface. But the ship seems to be haunted by ghostly voices, which a quick dip below the water line reveals to be hundreds of barnacles stuck to the ship. As the ship drifts into waters too cold for the barnacles, the Octonauts must find a way to tow it to warmer waters before it sinks or falls apart.

Feeding Frenzy

Episode: 5x05 | Airdate: Mar 31, 2023 (15 min)

While exploring a reef, Shellington and Dashi accidentally trigger a feeding frenzy with multiple sharks biting at anything that moves. As Barnacles and Tweak work frantically to plan a rescue, Shellington and Dashi try not to become shark food!

A Very Vegimals Christmas

Episode: S05 Special | Airdate: Dec 17, 2023 (25 min)

Christmas special of the animated deep sea adventure series. The Vegimals' plans for a Christmas feast are interrupted when the Octonauts are all entangled in a blob of sea snot!

Specials

Great Swamp Search

Episode: S04 Special | Airdate: Dec 3, 2016 (25 min)

Special episode of the animated deep sea adventure series. Join Captain Barnacles and his intrepid band of explorers, The Octonauts, for more deep sea adventures. The Octonauts roam the oceans in search of adventure and fun. Whether it's a perilous voyage to the bottom of the sea or the piratey pursuit of a giant squid, the Octonauts leap into action and always prove that eight heads are better than one.