Seasons & Episodes
The Undersea Storm
As a huge storm heads towards the headquarters, the Octonaut crew hurriedly goes into preparation. However, Kwaji, who w
The Giant Squid
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 Great Algae Escape
Captain Barnacles and his crew must catch a runaway Octopod, when it is hijacked by a group of crustaceans trying to esc
The Walrus Chief
When Peso's precious medical kit is taken, Barnacles and Kwazii sneak into a dangerous walrus colony to get it back, dis
The Flying Fish
When a school of flying fish accidentally make off with a rare book belonging to Professor Inkling, the Octonauts rig up
The Narwhal
While exploring the Arctic, the Octopod gets trapped in the ice. Only Barnacles's skillful navigation, and the help of a
The Monster Map
The Octonauts follow an old map to what Kwazii believes is treasure guarded by a sea monster but, instead, they meet a p
The Crab and the Urchin
The crew pursues crustaceans who’ve hijacked the Octopod.
The Albino Humpback Whale
The Octonauts help out an Albino Humpback Whale with a nasty sunburn.
The Remipedes
When Shellington gets lost in a dark sea cave, he gets unexpected assistance from some blind Remipedes.
The Orcas
When a huge Orca whale becomes stranded on a beach, Captain Barnacles Bear and the Octonauts devise a plan to pull him b
The Blobfish Brothers
The Octonauts must evacuate sea creatures before an underwater volcano erupts, but there's one creature that won't budge
The Decorator Crab
When important objects go missing from their ship, the Octonauts stake out the thief, who turns out to be a decorator cr
The Whale Shark
When Kwazii's Gup-B breaks down in a storm, not even brave Captain Barnacles can save him alone. Fortunately, a chain of
The Cookiecutter Sharks
Some mysterious holes that keep appearing in the Octonauts' equipment turn out to be the work of cookiecutter sharks who
The Jellyfish Bloom
When Shellington gets trapped in the middle of a massive Jellyfish bloom, it's up to the Octonauts to rescue him.
The Speedy Sailfish
When all the Gups go out of control, Barnacles and Kwazii leap onto the backs of some speedy Sailfish to round them up.
The Vampire Squid
Peso must gather all his courage when he travels deep down to the very bottom of the ocean, the Midnight Zone, and encou
The Humuhumunukunukuapua'a
When the Octopod's waterworks are flooded with frightened Humuhumu fish, the Octonauts have to find a way to flush them
The Giant Spider Crab
The octonauts help a 100 year old spider crab which has got its leg trapped in a giant clam whilst en route to its own 1
The Giant Kelp Forest
When Kwazii's favorite sub, the Gup B, goes missing, the Octonauts journey into a mysterious kelp forest to find it, mee
The Hermit Crabs
When Captain Barnacles Bear and most of the crew are unable to return to base, it's up to Peso and Tweak to remove a stu
The Hungry Pilot Fish
The Octonauts are chased by a whitetip shark only to discover all it really needed was a pilot fish to clean its teeth,
The Beluga Whales
The Octonauts lead a pod of Beluga Whales stuck under the pack ice to safety by getting them to follow Peso while he's p
The Snot Sea Cucumber
After an underwater tremor, an injured sea cucumber named Slippy gets loose on the Octopod, so to let her breathe, they
The Giant Whirlpool
The Octonauts race against time to rescue Tweak's pal, a leatherback sea turtle who's caught in a fast-moving ocean curr
The Slime Eels
Kwazii covets the treasure in a sunken pirate ship, but its protected by slime squirting Slime Eels.
The Arctic Orcas
When Captain Barnacles and Peso get lost in the icy Arctic sea, a pod of Orcas help the Octonauts find them.
The Lost Sea Star
When the Octonauts find an unusual Sea Star on the beach, they search the ocean from top to bottom (literally) to help f
The Giant Jelly
The Octonauts must rescue Peso when he gets trapped inside a giant ctenophore.
The Snapping Shrimp
The Octonauts encounter a snapping shrimp – a small creature that uses its claws to make a big, and stunning, noise.
The Kelp Forest Rescue
When Peso's little brother, Pinto, comes to visit, he's more interested in being a pirate than a medic – at least unti
The Enormous Elephant Seal
When Peso and the Octonauts aid an enormous Elephant Seal, he overstays his welcome in the Octopod.
The Sardine School
The Octonauts must work together as a team to help a lost sardine find her school.
The Eel Ordeal
The Octonauts travel up a treacherous river to help a young migrating eel on her difficult journey.
The Dolphin Reef Rescue
When the Octonauts all pitch in to help save a sick coral reef, they get some unexpected help from a pod of playful dolp
The Pirate Parrotfish
When the Octonauts go on a pirate treasure hunt, Kwazii meets a Parrotfish.
The Electric Torpedo Rays
Some electric torpedo rays give the Octopod a jump-start when its batteries go flat during a trip to see Tweak's pal, Sa
The Midnight Zone
While exploring the deepest part of the ocean, the Midnight Zone, the Octonauts discover a strange rock that happens to
The Mixed-Up Whales
When the Octonauts clean and repair their ship, the Octopod, the resulting noise causes a nearby blue whale to act in st
The Seahorse Tale
After a storm, the Octonauts help a female seahorse search for her missing mate. She tells them, to Kwazii's surprise, t
The Enemy Anemones
The Octonauts land on an island for a picnic but must first help some crabs trapped between two warring groups of aggreg
The Crafty Cuttlefish
Captain Barnacles allows Tunip to use his Octo-compass. But when Tunip loses it, a cuttlefish takes it.
The Lost Lemon Shark
The Octonauts have their hands full as they look after a headstrong young Lemon Shark who's hurt his nose and can't find
The Baby Dolphin
When a young dolphin follows Kwazii home, he has to babysit while the other Octonauts search for its mother.
The Scary Spookfish
The Octonauts try to pull Peso out of an oceanic trench and get some help from a strange looking creature with a see thr
The Oarfish
Dashi snaps a picture of what appears to be a sea serpent, but the truth is stranger than fiction when it turns out to b
The Combtooth Blenny
When Kwazii and Peso are shipwrecked on a desert island, they encounter a Combtooth Blenny - a fish who walks on land! T
The Marine Iguanas
The team are preparing for a feast of red seaweed on the Galapagos Islands but a trio of salt-sneezing marine iguanas ra
The Dwarf Lantern Shark
Down in the darkness of the ocean deep, Peso and the Octonauts must help a tiny, injured Dwarf Lantern Shark.
The Colossal Squid
The Octopod is attacked by a colossal squid, who drags the ship down an abyssal trench, forcing Barnacles and Kwazii to
The Adelie Penguins
While Kwazii and Peso have their hands full babysitting a bunch of Adelie penguin chicks, Captain Barnacles must rescue
The Coconut Crabs
Kwazii finds a mysterious, unbreakable coconut, so the Octonauts seek out the help of some large, island-dwelling coconu
The Great White Shark
Peso must perform an emergency fin bandage on a hungry great white shark, but first they need to subdue the giant predat
The Sea Snakes
It's Sea Snakes on an Octopod when a poisonous sea krait lays her eggs in the garden pod, just as Captain Barnacles has
The Bowhead Whales
When the Octonauts are unable to rescue a group of Narwhals trapped behind arctic ice, they recruit a Bowhead Whale to h
The Jawfish
A mouth-brooding jawfish father has lost his eggs, and the Octonauts must brave strong currents and other obstacles to h
The Porcupine Puffer
Barnacles, Kwazii and Peso venture back inside a whale shark to retrieve a Porcupine Puffer Fish that was accidentally s
The Damselfish
The Octonauts help a group of algae-eating fish stand up to some aggressive damselfish, who are harming their own reef b
The Scared Sperm Whale
A timid sperm whale must help the Octonauts release Peso from a giant clam.
The Long Armed Squid
Peso and Kwazii venture down to the midnight zone to help a hurt creature, but what they find is a shipwreck 'haunted' b
The Fiddler Crabs
The Octonauts help clean up a beach after a storm, but things get complicated when the resident fiddler crabs hijack the
The Manta Rays
The Octonauts help a young manta ray find the secret manta ray feeding grounds, but when they finally locate it, the Oct
The Swashbuckling Swordfish
The octonauts discover a rare showing of a full moon as Kwazii discovers that its known as the Pirate Moon as Kwazii and
The Triggerfish
The Octonauts' floating temperature sensors alert them to a risk of waterspouts due to a rise in sea surface temperature
The Mimic Octopus
The Octonauts recruit a shape-shifting mimic octopus to help them recover an important vial of medicinal algae from a mo
The Lionfish
The Octonauts get more than they bargained for when they use the Octopod to transport a pair of invasive lionfish back t
The Leafy Sea Dragons
When two young leafy sea dragons are accidentally separated from their father and brought onboard the Octopod, the Octon
The Manatees
Running out of air, Barnacles struggles to free his paw from the mouth of a giant clam, while simultaneously directing h
The Saltwater Crocodile
When a gigantic saltwater crocodile wanders into freezing waters, the Octonauts must figure out how to get the predator
The Humphead Parrotfish
The Octonauts use magnets to try to stop a meteor that's heading toward the Octopod and get an assist from a rock-chompi
The Gulper Eels
When hungry gulper eels as well as undersea tremors threaten Inkling and Kwazii, Dashi uses the new, multi-purpose Octo
Episode 23
The Siphonophore
Kwazii and Dashi become entangled in a strange deep-sea creature - a siphonophore.
The Water Bears
The gang ventures into a red-hot lava tube to rescue a tiny water bear that does not seem to mind the heat at all.
The Cone Snail
Peso sets out to save the day when a cone snail invades the octopod and picks off the crew one by one with its dangerous
The Artificial Reef
When an underwater storm destroys a small reef, Tweak and her crew try to convert the Gup-F into an artificial equivalen
The Humpback Whales
When a sardine swallows the key to a treasure chest, a humpback whale helps Kwazii track it down.
The Pelicans
When a floating garbage patch endangers a flock of pelicans and other sea creatures, the Octonauts and the birds work to
The Sea Pigs
The Octonauts must stop a huge herd of sea pigs before they march blindly into the Mariana Trench - where there will be
The Yeti Crab
As Tweak tests the Gup-X deep down in the Midnight Zone, a yeti crab cuts a vital electrical wire in the ship and cuts o
The Barracudas
Shellington and the Vegimals' mission to replant a mangrove forest is put in peril by a school of toothy barracudas.
The Duck-Billed Platypus
While rescuing river creatures after a storm, the Octonauts find a strange egg and come under attack by stinging platypu
The Sea Skaters
When Kwazii gets lost at sea aboard the tiny octo-ski, he meets a flotilla of even tinier sea skaters - the only insects
The Mudskippers
The Octonauts attempt to keep the peace amongst a trio of mudskippers whose home has been flooded.
The Harbour Seal
When Peso's patient, a remora fish, mysteriously disappears, the Octonauts enlist a unique undersea detective - a harbou
The Lion's Mane Jellyfish
A lion's mane jellyfish gets its long and stingy tentacles tangled in the bubble engine, unintentionally flooding the Oc
The Red Rock Crabs
When Shellington and the crew try to gather some skittish crabs who have drifted away from home, they get help from some
The Sea Sponge
A sea sponge that houses other sea creatures in its pores suffers from a mysterious illness and Peso must figure out the
The Immortal Jellyfish
Shellington and the Octonauts try to track an unusual creature: a jellyfish that can transform from old to young repeate
The Urchin Invasion
The Octonauts head to the kelp forest to visit Shellington's sister, Pearl, and her newborn son Periwinkle - only to fin
The Hammerhead Sharks
The Octonauts meet some hammerheaded sharks, however, they can't sleep too well because Shellington and Professor Inklin
The Loggerhead Sea Turtle
After an undersea tremor separates the Gup-X and its crew, Barnacles seeks guidance from a mysterious sea turtle.
Octonauts and the Poison Dart Frogs
When a giant wave hurls Amazon River creatures up into the trees, the Octonauts must get them down safely, without distu
Octonauts and the Hidden Lake
The Octonauts are exploring Antarctica, when Shellington discovers strange microscopic creatures living under the ice.
Octonauts and the Octopod Mystery
When the Octopod breaks down, Tweak and the crew search for a missing part aboard an abandoned prototype of the ship, no
Octonauts and the Baby Sea Turtles
As newborn baby sea turtles make their way to the ocean, the Octonauts must steer them clear a giant wave and hungry pre
Octonauts and the Walrus Pups
Captain Barnacles and his niece and nephew, Ursa and Orson, must rescue walrus pups who are stranded on a runaway ice fl
Octonauts and the Mantis Shrimp
The Octonauts must get 2 mantis shrimp to stop fighting before their powerful claw strikes destroy the Octopod.
Octonauts and the Loneliest Whale
The Octonauts follow a strange song to a lonely humpback whale.
Octonauts and the Tree Lobsters
When a storm washes Peso onto a mysterious, rocky island, he meets a band of lobster-like insects thought to be extinct.
Octonauts and the Convict Fish
The Octonauts evacuate the creatures living around a reef before a large archway collapses, but one stubborn convict fis
Octonauts and the Emperor Penguins
The Octonauts journey across a dangerous expanse of ice to help a penguin mother get back to her family.
Octonauts and the Crawfish
When a population of crawfish is stricken by illness, the Octonauts race to find a cure.
Octonauts and the Flamingos
The Octonauts find a lost flamingo chick separated from his family and they have to return him there before hungry allig
Octonauts and the Tiger Shark
When a hungry tiger shark eats the camera that Tweak's turtle friend Sandy gets in the Octopod, she and the Octonauts mu
Octonauts and the Sunfish
When a huge sunfish enters the GUP-E, Peso and Kwazii must somehow get the large fish out of the Gup. Eventually they fi
Octonauts and the Coelacanth
While exploring a dark and spooky cave, The Octonauts find a strange fossil of a powerful prehistoric fish... but it may
Octonauts and the Surfing Snails
When surfing snails are swept out to sea, it's up to Dashi and the Octonauts to save them.
Octonauts and the Yellow Bellied Sea Snakes
When Peso gets stranded on a beach with a mass of poisonous snakes after a terrible storm, he and the Octonauts must som
Octonauts and the Hippos
Trying to return home from a mission along an African river, the Octonauts have trouble getting past a gang of large, mu
Octonauts and Operation Cooperation
After Shellington crashes the GUP-D for the 3rd time, he and Kwazii team up with moray eels and grouper fish to help pic
Octonauts and the Bomber Worms
While diving down to the Midnight Zone, the Octonauts are attacked by bomber worms.
Octonauts and the Kelp Monster Mystery
Dashi teams up with her little sister Koshi to help the Octonauts solve a mysterious disappearance in the Kelp Forest. T
Octonauts and the Coconut Crisis
Kwazii takes a vacation on Coconut Island where he gets hit by some coconuts. Then he and the Octonauts must help their
Octonauts and the Baby Gator
Kwazii adopts a baby alligator naming him Nipper, but when it escapes the Octopod, he and the Octonauts must rescue him.
Octonauts and the Spinner Dolphins
The Octonauts struggle to save a pod of spinner dolphins who seem to be just swimming in their sleep.
Whales of Mystery
Shellington is excited to find the distinctive tooth of a very rare creature, the spade-toothed beaked whale. Now, the O
Blue Whale Rescue
When Kwazii discovers a blue whale with an injured tail, the Octonauts attempt to use a giant net and Octofloats to keep
Ghost Ship
The Octonauts follow a trail of deep-sea debris to its source: a derelict ship floating unmanned on the surface. But the
Feeding Frenzy
While exploring a reef, Shellington and Dashi accidentally trigger a feeding frenzy with multiple sharks biting at anyth
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 ca
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 t
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
Giant Sea Spiders
Kwazii and Shellington get lost in the Antarctic’s deep seas, before meeting a family of giant sea spiders who may kno
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
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 nee
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 crev
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 my
Bluefin Tuna
After an encounter with a school of migrating tuna, the Octonauts discover that one of the speedy fish, Tina, has been l
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