Episode 1
Blue Whale Rescue
December 30, 2020
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!
Episode 2
Bluefin Tuna
March 27, 2023
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?
Episode 3
Whales of Mystery
December 28, 2020
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.
Episode 4
Ghost Ship
December 31, 2020
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.
Episode 5
Feeding Frenzy
January 1, 2021
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!
Episode 6
Sawfish
January 2, 2021
When Kwazii gets a case of pirate hiccups, he and Peso go up the river in search of a pirate doctor’s treasure that can cure him.
Episode 7
Nautilus
January 3, 2021
Kwazii sets off on a monster hunt, and soon encounters a shelled creature called a Nautilus.
Episode 8
Grey Whales
January 4, 2021
The Octonauts must help reunite a grey whale calf with his mother, keeping him well fed in the meantime.
Episode 9
Flying Squid
January 5, 2021
The Octonauts meet a flying squid who can help Kwazii's grandfather, Calico Jack, retrieve his treasure.
Episode 10
Sea Lions
January 6, 2021
When a wave traps Dashi in a cave with an injured sea lion, the Octonauts and sea lion pack must work together to save them. Using just some rope and a life buoy the pack fights against the waves to save them. Can they save them before it is too late?
Episode 11
Hawksbill Sea Turtle
January 7, 2021
The Octonauts must guide an ill-stricken hawksbill sea turtle into cooler waters, in order for her to lay healthy eggs.
Episode 12
Wood Eating Catfish
January 8, 2021
When Kwazii is found with an injury, he tells the tale of how he and Calico Jack encountered a fish that ate his peg leg.
Episode 13
Seven Sea Squirts
January 9, 2021
The Octonauts help a band of algae-shooting sea squirts reunite in order to stop an outbreak in the reef.
Episode 14
Bullfrogs
January 10, 2021
When the Vegimals accidentally bring bullfrogs into the Octopod, they must rally them up and bring them back home before the Octonauts find out.
Episode 15
Giant Sea Spiders
January 11, 2021
Kwazii and Shellington get lost in the Antarctic’s deep seas, before meeting a family of giant sea spiders who may know a way out.
Episode 16
Great Octo-Bot Rescue
January 12, 2021
When the Octo-Bots sink into a lake of boiling hot sulfur, Kwazii has to rescue them before the surface hardens.
Episode 17
Axolotl
January 13, 2021
Captain Barnacles and Kwazii help a pair of singing female axolotls named George's mom (yellow) and George (pink) find a new watering hole, while protecting them from a hungry flock of herons.
Episode 18
Beavers
January 14, 2021
In order for a school of salmon to reach their nesting area, the Octonauts must enlist help from a family of beavers.
Episode 19
Zombie Worms
January 15, 2021
The Octolab is being eaten away by a group of zombie worms, tasking the crew with finding a new home for them.
Episode 20
Mud Volcanoes
January 16, 2021
While exploring the Mariana Trench, Shellington and Dashi come across a path full of mud volcanoes and a creature in need.
Episode 21
Tiger Fish and Blind Shrimp
January 17, 2021
The Octonauts encounter a tiger fish and blind shrimp who become separated.
Episode 22
Fish Mouth Louse
January 18, 2021
The Octonauts help a creature find his louse friend who got lost and could be in trouble.
Episode 23
Deep Ocean Discovery
January 19, 2021
Shellington’s sister and nephew, Pearl and Periwinkle, join him on a mission.
Episode 24
Silver Sea
January 20, 2021
The Octonauts encounter a blob of glowing liquid drifting on the ocean’s surface.
Episode 25
Bicolour Fangblenny
January 21, 2021
The crew must catch a mysterious fish that’s out to bite every creature in the reef.
Episode 26
Scaly-Foot Snail
January 22, 2021
The Octonauts meet strong scaly foot snails and enlist them in trying to help save the Octo-Lab from falling into a crevice.
Episode 27
Chinese Giant Salamander
January 23, 2021
The Octonauts head to the Yangtze River to help Min the Mapmaker, an old friend of Inkling's, who's been trapped by a mysterious creature. Turns out, It was just a Chinese giant salamander protecting her precious eggs, which have fallen ill due to rising water temperatures.
