Octonauts: Season 5
Season 5 Lore Primer
Key plot threads, lore context, and character stakes you need to remember before diving into this season.
- Directly follows the overarching narrative developments of Octonauts Season 4.
- Faction dynamics and core character alliances shift under escalating external stakes.
- Crucial mysteries introduced previously reach key turning points and narrative reckonings.
- Sets up serialized story arcs that build directly toward the climactic season finale.
Episode Guide
Season 5 Progress Shield
Whales of Mystery
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 stu
Bluefin Tuna
Mar 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
Blue Whale Rescue
Dec 28, 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
Ghost Ship
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 d
Feeding Frenzy
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 p
Sawfish
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.
Nautilus
Kwazii sets off on a monster hunt, and soon encounters a shelled creature called a Nautilus.
Grey Whales
The Octonauts must help reunite a grey whale calf with his mother, keeping him well fed in the meantime.
Flying Squid
The Octonauts meet a flying squid who can help Kwazii's grandfather, Calico Jack, retrieve his treasure.
Sea Lions
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 ag
Hawksbill Sea Turtle
The Octonauts must guide an ill-stricken hawksbill sea turtle into cooler waters, in order for her to lay healthy eggs.
Wood Eating Catfish
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.
Seven Sea Squirts
The Octonauts help a band of algae-shooting sea squirts reunite in order to stop an outbreak in the reef.
Bullfrogs
When the Vegimals accidentally bring bullfrogs into the Octopod, they must rally them up and bring them back home before the Octonauts find out.
Giant Sea Spiders
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.
Great Octo-Bot Rescue
When the Octo-Bots sink into a lake of boiling hot sulfur, Kwazii has to rescue them before the surface hardens.
Axolotl
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 floc
Beavers
In order for a school of salmon to reach their nesting area, the Octonauts must enlist help from a family of beavers.
Zombie Worms
The Octolab is being eaten away by a group of zombie worms, tasking the crew with finding a new home for them.
Mud Volcanoes
While exploring the Mariana Trench, Shellington and Dashi come across a path full of mud volcanoes and a creature in need.
Tiger Fish and Blind Shrimp
The Octonauts encounter a tiger fish and blind shrimp who become separated.
Fish Mouth Louse
The Octonauts help a creature find his louse friend who got lost and could be in trouble.
Deep Ocean Discovery
Shellington’s sister and nephew, Pearl and Periwinkle, join him on a mission.
Silver Sea
The Octonauts encounter a blob of glowing liquid drifting on the ocean’s surface.
Bicolour Fangblenny
The crew must catch a mysterious fish that’s out to bite every creature in the reef.
Scaly-Foot Snail
The Octonauts meet strong scaly foot snails and enlist them in trying to help save the Octo-Lab from falling into a crevice.
Chinese Giant Salamander
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 sa