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All Seasons

Season 1

  • S01E01 The Undersea Storm

    • October 5, 2010
    • CBeebies

    When Kwazii's Gup-B breaks down in a storm, not even brave Captain Barnacles can save him alone. Fortunately, a chain of reef lobsters lends a hand - and some claws.

  • S01E02 The Giant Squid

    • October 11, 2010
    • CBeebies

    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! The Octonauts set out to find and photograph Inkling's long lost cousin, the elusive Giant Squid.

  • S01E03 The Great Algae Escape

    • October 13, 2010
    • CBeebies

    Captain Barnacles and his crew must catch a runaway Octopod, when it is hijacked by a group of crustaceans trying to escape their algae-infested waters.

  • S01E04 The Walrus Chief

    • October 7, 2010
    • CBeebies

    When Peso's precious medical kit is taken, Barnacles and Kwazii sneak into a dangerous walrus colony to get it back, disguised as a walrus.

  • S01E05 The Flying Fish

    • October 8, 2010
    • CBeebies

    When a school of flying fish accidentally make off with a rare book belonging to Professor Inkling, the Octonauts rig up the Gup B to fly after them and get it back.

  • S01E06 The Narwhal

    • October 26, 2010
    • CBeebies

    While exploring the Arctic, the Octopod gets trapped in the ice. Only Barnacles's skillful navigation, and the help of a friendly Narwhal, can get them free.

  • S01E07 The Monster Map

    • October 19, 2010
    • CBeebies

    The Octonauts follow an old map to what Kwazii believes is treasure guarded by a sea monster but, instead, they meet a playful Octopus with all kinds of surprising abilities.

  • S01E08 The Crab and Urchin

    • October 6, 2010
    • CBeebies

    Barnacles and Kwazii investigate a disruption on a nearby reef: a carrier crab and the urchin who lives on its shell just can't seem to get along.

  • S01E09 The Albino Humpback Whale

    • October 21, 2010
    • CBeebies

    The Octonauts help out an Albino Humpback Whale with a nasty sunburn.

  • S01E10 The Remipedes

    • October 14, 2010
    • CBeebies

    When Shellington gets lost in a dark sea cave, he gets unexpected assistance from some blind Remipedes.

  • S01E11 The Orcas

    • October 12, 2010
    • CBeebies

    When a huge Orca whale becomes stranded on a beach, Captain Barnacles Bear and the Octonauts devise a plan to pull him back into the water, with some help from a group of tunnelling Fiddler Crabs.

  • S01E12 The Blobfish Brothers

    • October 18, 2010
    • CBeebies

    The Octonauts must evacuate sea creatures before an underwater volcano erupts, but there's one creature that won't budge: a slow moving, gelatinous Blobfish.

  • S01E13 The Decorator Crab

    • November 5, 2010
    • CBeebies

    When important objects go missing from their ship, the Octonauts stake out the thief, who turns out to be a decorator crab stealing their things to decorate his shell.

  • S01E14 The Whale Shark

    • October 4, 2010
    • CBeebies

    When Dashi is accidentally swallowed by a whale shark, the Octonauts venture inside the huge fish to rescue her.

  • S01E15 The Cookiecutter Sharks

    • December 13, 2010
    • CBeebies

    What keeps making strange holes in the Octonauts' equipment? Turns out it's a trio of pesky Cookiecutter Sharks, the mosquitos of the sea!

  • S01E16 The Jellyfish Bloom

    • December 16, 2010
    • CBeebies

    When Shellington gets trapped in the middle of a massive Jellyfish bloom, it's up to the Octonauts to rescue him.

  • S01E17 The Speedy Sailfish

    • October 15, 2010
    • CBeebies

    When all the Gups go out of control, Barnacles and Kwazii leap onto the backs of some speedy Sailfish to round them up.

  • S01E18 The Vampire Squid

    • December 8, 2010
    • CBeebies

    Peso must gather all his courage when he travels deep down to the very bottom of the ocean, the Midnight Zone, and encounters the mysterious Vampire Squid.

  • S01E19 The Humuhumunukunukuapua'a

    • February 10, 2011
    • CBeebies

    When the Octopod's waterworks are flooded with frightened Humuhumu fish, the Octonauts have to find a way to flush them out.

  • S01E20 The Giant Spider Crab

    • February 11, 2011
    • CBeebies

    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 100th birthday party. It turns out that Kwazii's afraid of spiders, but he still helps, even though he thought it was a real spider at first.

  • S01E21 The Giant Kelp Forest

    • October 22, 2010
    • CBeebies

    When Kwazii's favorite sub, the Gup B, goes missing, the Octonauts journey into a mysterious kelp forest to find it, meeting strange and interesting creatures along the way.

  • S01E22 The Hermit Crabs

    • November 2, 2010
    • CBeebies

    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 stuck hermit crab from its shell.

  • S01E23 The Hungry Pilot Fish

    • December 7, 2010
    • CBeebies

    The Octonauts are chased by a whitetip shark only to discover all it really needed was a pilot fish to clean its teeth, and it just so happens that they have just met a lonely pilot fish that is hungry for action.

  • S01E24 The Beluga Whales

    • December 6, 2010
    • CBeebies

    The Octonauts lead a pod of Beluga Whales stuck under the pack ice to safety by getting them to follow Peso while he's playing the same tune as the Beluga's song on his xylophone.

  • S01E25 The Snot Sea Cucumber

    • October 29, 2010
    • CBeebies

    When a slimy, slippery snot sea cucumber gets loose on the Octopod, Captain Barnacles Bear decides the only way to save it is to flood the ship!

  • S01E26 The Giant Whirlpool

    • November 1, 2010
    • CBeebies

    The Octonauts race against time to rescue Tweak's pal, a leatherback sea turtle who's caught in a fast-moving ocean current that's sucking it into a whirlpool.

  • S01E27 The Slime Eels

    • January 26, 2011
    • CBeebies

    Kwazii covets the treasure in a sunken pirate ship, but its protected by slime squirting Slime Eels.

  • S01E28 The Arctic Orcas

    • January 25, 2011
    • CBeebies

    When Captain Barnacles and Peso get lost in the icy Arctic sea, a pod of Orcas help the Octonauts find them.

  • S01E29 The Lost Sea Star

    • October 20, 2010
    • CBeebies

    When the Octonauts find an unusual Sea Star on the beach, they search the ocean from top to bottom (literally) to help find its home.

  • S01E30 The Giant Jelly

    • December 10, 2010
    • CBeebies

    The Octonauts must rescue Peso when he gets trapped inside a giant Comb Jelly!

  • S01E31 The Snapping Shrimp

    • October 28, 2010
    • CBeebies

    The Octonauts encounter a snapping shrimp – a small creature that uses its claws to make a big, and stunning, noise.

  • S01E32 The Kelp Forest Rescue

    • November 4, 2010
    • CBeebies

    When Peso's little brother, Pinto, comes to visit, he's more interested in being a pirate than a medic – at least until he accompanies Peso on a mission to rescue Dashi and Shellington in a kelp forest.

  • S01E33 The Enormous Elephant Seal

    • January 27, 2011
    • CBeebies

    When Peso and the Octonauts aid an enormous Elephant Seal, he overstays his welcome in the Octopod.

  • S01E34 The Sardine School

    • January 28, 2011
    • CBeebies

    The Octonauts must work together as a team to help a lost sardine find her school.

  • S01E35 The Eel Ordeal

    • February 1, 2011
    • CBeebies

    The Octonauts travel up a treacherous river to help a young migrating eel on her difficult journey.

  • S01E36 The Dolphin Reef Rescue

    • January 31, 2011
    • CBeebies

    When the Octonauts all pitch in to help save a sick coral reef, they get some unexpected help from a pod of playful dolphins.

  • S01E37 The Pirate Parrotfish

    • February 4, 2011
    • CBeebies

    When the Octonauts go on a pirate treasure hunt, Kwazii meets a Parrotfish.

  • S01E38 The Electric Torpedo Rays

    • February 7, 2011
    • CBeebies

    When the Octopod loses all power, the Octonauts give it a jumpstart with the aid of some Electric Torpedo Rays!

  • S01E39 The Midnight Zone

    • October 27, 2010
    • CBeebies

    While exploring the deepest part of the ocean, the Midnight Zone, the Octonauts discover a strange rock that happens to be home to a new species of worm.

  • S01E40 The Mixed-Up Whales

    • November 3, 2010
    • CBeebies

    When the Octonauts clean and repair their ship, the Octopod, the resulting noise causes a nearby blue whale to act in strange and dangerous ways.

  • S01E41 The Seahorse Tale

    • December 9, 2010
    • CBeebies

    After a storm, the Octonauts have to reunite a seahorse with its missing mate - who is about to give birth to baby seahorses!

  • S01E42 The Enemy Anemones

    • October 25, 2010
    • CBeebies

    The Octonauts and some helpless crabs are caught between two territorial groups of aggregating anemones - and their numbers are growing!

  • S01E43 The Crafty Cuttlefish

    • February 8, 2011
    • CBeebies

    Captain Barnacles' compass has been taken by a crafty, shape shifting Cuttlefish

  • S01E44 The Lost Lemon Shark

    • February 9, 2011
    • CBeebies

    The Octonauts have their hands full as they look after a headstrong young Lemon Shark who's hurt his nose and can't find his way home.

  • S01E45 The Baby Dolphin

    • December 17, 2010
    • CBeebies

    When a young dolphin follows Kwazii home, he has to babysit while the other Octonauts search for its mother.

  • S01E46 The Scary Spookfish

    • January 24, 2011
    • CBeebies

    The Octonauts try to pull Peso out of an oceanic trench and get some help from a strange looking creature with a see through head: a Spookfish.

  • S01E47 The Oarfish

    • December 14, 2010
    • CBeebies

    Dashi snaps a picture of what appears to be a sea serpent, but the truth is stranger than fiction when it turns out to be an awesomely long Oarfish.

  • S01E48 The Combtooth Blenny

    • December 15, 2010
    • CBeebies

    When Kwazii and Peso are shipwrecked on a desert island, they encounter a Combtooth Blenny - a fish who walks on land! They enlist him to send an SOS message to the other Octonauts.

  • S01E49 The Marine Iguanas

    • February 2, 2011
    • CBeebies

    As the Octonauts prepare for their annual seaweed feast near the Galapagos Islands, a trio of salt sneezing Marine Iguanas steal their seaweed!

  • S01E50 The Dwarf Lantern Shark

    • February 3, 2011
    • CBeebies

    Down in the darkness of the ocean deep, Peso and the Octonauts must help a tiny, injured Dwarf Lanternshark. But they have to find him first!

  • S01E51 The Great Penguin Race

    • December 13, 2010
    • CBeebies

    The Octonauts cheer Peso on as he goes home to compete against an awesomely athletic penguin in an annual tournament: the Iron Clam Competition.

  • S01E52 The Great Christmas Rescue

    • December 24, 2011
    • CBeebies

    The Octonauts travel to Professor Inkling's childhood home for Christmas, an undersea mountain. But they discover that a rockslide has endangered the local creatures - including a rare species of golden coral, and Inkling's little octopus nephew, Squirt! With the help of Tweak's latest invention, the Gup X, the Octonauts must rescue the creatures and save Christmas.

Season 2

  • S02E01 The Great White Shark

    • November 22, 2012
    • CBeebies

    Peso must perform an emergency fin bandage on a hungry great white shark, but first they need to subdue the giant predator using a trick called 'tonic immobility'.

  • S02E02 The Sea Snakes

    • November 23, 2012
    • CBeebies

    It's Sea Snakes on an Octopod when a poisonous sea krait lays her eggs in the garden pod, just as Captain Barnacles has to navigate the ship past a treacherous whirlpool.

  • S02E03 The Adelie Penguins

    • November 20, 2012
    • CBeebies

    While Kwazii and Peso have their hands full babysitting a bunch of Adelie penguin chicks, Captain Barnacles must rescue the chicks' parents from a perilous sea storm!

  • S02E04 The Coconut Crabs

    • November 21, 2012
    • CBeebies

    Kwazii finds a mysterious, unbreakable coconut, so the Octonauts seek out the help of some large, island-dwelling coconut crabs to open it.

  • S02E05 The Colossal Squid

    • November 19, 2012
    • CBeebies

    The Octopod is attacked by a colossal squid, who drags the ship down an abyssal trench, forcing Barnacles and Kwazii to make a perilous swim outside to confront the gigantic beast.

  • S02E06 The Jawfish

    • November 27, 2012
    • CBeebies

    Animated deep sea adventure series. Captain Barnacles and his intrepid band of explorers roam the oceans in search of adventure and fun. A mouthbrooding jawfish father has lost his eggs, and the Octonauts must brave strong currents and other obstacles to help get them back to him!

  • S02E07 The Swashbuckling Swordfish

    • March 14, 2013
    • CBeebies

    The octonauts discover a rare showing of a full moon as Kwazii discovers that its known as the Pirate Moon as Kwazii and The Octonauts search for a ship that belonged to the pirate king as Kwazii searches for the sword of the Pirate King until a trio of swordfish prevent Kwazii from getting closer to the wrecked ship. (Episode also known as "The Flying Swords" for USA screenings.)

  • S02E08 The Fiddler Crabs

    • March 12, 2013
    • CBeebies

    The Octonauts help clean up a beach after a storm, but things get complicated when the resident fiddler crabs hijack the Gup-D!

  • S02E09 The Porcupine Puffer

    • November 28, 2012
    • CBeebies

    Barnacles, Kwazii and Peso venture back inside a whale shark to retrieve a Porcupine Puffer Fish that was accidentally swallowed.

  • S02E10 The Manta Rays

    • March 13, 2013
    • CBeebies

    The Octonauts help a young manta ray find the secret manta ray feeding grounds, but when they finally locate it, the Octonauts become caught in the middle of a dangerous feeding frenzy!

  • S02E11 The Scared Sperm Whale

    • November 30, 2012
    • CBeebies

    A timid sperm whale must help the Octonauts release Peso from a giant clam.

  • S02E12 The Long Armed Squid

    • March 11, 2013
    • CBeebies

    Peso and Kwazii venture down to the midnight zone to help a hurt creature, but what they find is a shipwreck 'haunted' by a spooky-looking long-armed squid.

  • S02E13 The Bowhead Whales

    • November 26, 2012
    • CBeebies

    When the Octonauts are unable to rescue a group of Narwhals trapped behind arctic ice, they recruit a Bowhead Whale to help them break through!

  • S02E14 The Damselfish

    • November 29, 2012
    • CBeebies

    The Octonauts help a group of algae-eating fish stand up to some aggressive damselfish, who are harming their own reef by over-farming it with algae.

  • S02E15 The Amazon Adventure

    • January 1, 2013
    • CBeebies

    In this special episode, the Octonauts travel deep down the Amazon river in search of a lost city - and Kwazii's long lost grandfather, Calico Jack!

  • S02E16 The Humphead Parrotfish

    • September 2, 2013
    • CBeebies

    The Octonauts use magnets to try to stop a meteor that's heading toward the Octopod and get an assist from a rock-chomping humphead parrotfish and her friends.

  • S02E17 The Leafy Sea Dragons

    • May 15, 2013
    • CBeebies

    When two young leafy sea dragons are accidentally separated from their father and brought onboard the Octopod, the Octonauts must find them before they end up in Kwazii's stew!

  • S02E18 The Manatees

    • May 16, 2013
    • CBeebies

    Running out of air, Barnacles struggles to free his paw from the mouth of a giant clam, while simultaneously directing his crew in a delicate manatee rescue operation.

  • S02E19 The Mimic Octopus

    • May 13, 2013
    • CBeebies

    The Octonauts recruit a shape-shifting mimic octopus to help them recover an important vial of medicinal algae from a moray eel's lair.

  • S02E20 The Triggerfish

    • March 15, 2013
    • CBeebies

    The Octonauts' floating temperature sensors alert them to a risk of waterspouts due to a rise in sea surface temperature so they decide to retrieve the devices for safe-keeping. But Kwazii gets into an argument with a possessive triggerfish which has adopted one of the devices as its home, and they both get carried away by a waterspout. Kwazii ends up having to defend the fish from a seabird and a swordfish that want to eat it. Luckily the characteristic grunting sounds that triggerfish make when distressed enables the other Octonauts to locate them.

  • S02E21 The Saltwater Crocodile

    • May 17, 2013
    • CBeebies

    When a gigantic saltwater crocodile wanders into freezing waters, the Octonauts must figure out how to get the predator back to his warm water home - without anyone getting hurt.

  • S02E22 The Gulper Eels

    • September 3, 2013
    • CBeebies

    When hungry gulper eels as well as undersea tremors threaten Inkling and Kwazii, Dashi uses the new, multi-purpose Octo Max Suit to rescue them.

  • S02E23 The Lionfish

    • May 14, 2013
    • CBeebies

    The Octonauts get more than they bargained for when they use the Octopod to transport a pair of invasive lionfish back to their native habitat.

  • S02E24 The Very Vegimal Christmas

    • December 10, 2013
    • CBeebies

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

Season 3

  • S03E01 The Red Rock Crabs

    • March 18, 2014
    • CBeebies

    When Shellington and the crew try to gather some skittish crabs who have drifted away from home, they get help from some old friends.

  • S03E02 The Sea Pigs

    • September 12, 2013
    • CBeebies

    The Octonauts must stop a huge herd of sea pigs before they march blindly into the Mariana Trench - the deepest point on earth!

  • S03E03 The Sea Sponge

    • March 19, 2014
    • CBeebies

    A sea sponge that houses other sea creatures in its pores suffers from a mysterious illness and Peso must figure out the cause.

  • S03E04 The Loggerhead Sea Turtle

    • October 8, 2013
    • CBeebies

    When an underwater tremor separates the Gup-X and its crew, Barnacles seeks guidance from a mysterious sea turtle.

  • S03E05 The Harbor Seal

    • March 14, 2014
    • CBeebies

    When Peso's patient, a remora fish, mysteriously disappears, the Octonauts enlist a unique undersea detective - a harbour seal.

  • S03E06 The Yeti Crab

    • September 13, 2013
    • CBeebies

    As Tweak tests the Gup-X deep down in the Midnight Zone, a yeti crab damages the ship, endangering itself and the Octonauts.

  • S03E07 The Great Arctic Adventure

    • December 17, 2014
    • CBeebies

    Peso goes with Barnacles to help his sister and her new polar cubs learn to navigate the harsh conditions of the frozen arctic.

  • S03E08 The Mariana Trench Adventure

    • May 27, 2013
    • CBeebies

    Tweak has designed a brand-new Deep Sea Station to study the deepest, darkest reaches of the ocean, but the Octonauts face multiple challenges: from getting it down there, to the extreme environment and strange, prehistoric creatures that greet them once they arrive.

  • S03E09 The Over Under Adventure

    • March 14, 2014
    • CBeebies

    The Octonauts' mission to explore Antarctica becomes a desperate rescue as a group of sea stars and urchins are threatened by a brinicle - a rare underwater icicle that can freeze creatures on the sea bed.

  • S03E10 The Waterbears

    • September 5, 2013
    • CBeebies

    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.

  • S03E11 The Barracudas

    • March 10, 2014
    • CBeebies

    Shellington and the Vegimals' mission to replant a mangrove forest is put in peril by a school of toothy barracudas.

  • S03E12 The Cone Snail

    • September 6, 2013
    • CBeebies

    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 harpoons.

  • S03E13 The Artificial Reef

    • September 9, 2013
    • CBeebies

    When an underwater storm destroys a small reef, Tweak and her crew try to convert the Gup-F into an artificial equivalent.

  • S03E14 The Hammerhead Sharks

    • June 29, 2014
    • CBeebies

    The Octonauts study a group of baby hammerhead sharks as they hunt for food.

  • S03E15 The Humpback Whales

    • September 10, 2013
    • CBeebies

    When a sardine swallows the key to a treasure chest, a humpback whale helps Kwazii track it down.

  • S03E16 The Duck-Billed Platypus

    • March 11, 2014
    • CBeebies

    While rescuing river creatures after a storm, the Octonauts find a strange egg and come under attack by stinging platypuses.

  • S03E17 The Mudskippers

    • March 13, 2014
    • CBeebies

    The Octonauts attempt to keep the peace amongst a trio of mudskippers whose home has been flooded.

  • S03E18 The Immortal Jellyfish

    • March 20, 2014
    • CBeebies

    Shellington and the Octonauts try to track an unusual creature: a jellyfish that can transform from old to young repeatedly - and live forever!

  • S03E19 The Sea Skaters

    • March 12, 2014
    • CBeebies

    When Kwazii gets lost at sea aboard the tiny octo-ski, he meets a flotilla of even tinier sea skaters - the only insects who live on the ocean.

  • S03E20 The Siphonophore

    • September 4, 2013
    • CBeebies

    Kwazii and Dashi become entangled in a strange deep-sea creature - a siphonophore.

  • S03E21 The Urchin Invasion

    • March 21, 2014
    • CBeebies

    The Octonauts head to the kelp forest to visit Shellington's sister, Pearl, and her newborn son Periwinkle - only to find the forest endangered by an infestation of kelp-eating urchins!

  • S03E22 The Lion's Mane Jellyfish

    • March 17, 2014
    • CBeebies

    A lion's mane jellyfish gets its long and stingy tentacles tangled in the bubble engine, unintentionally flooding the Octopod and causing havoc.

  • S03E23 The Pelicans

    • September 11, 2013
    • CBeebies

    When a floating garbage patch endangers a flock of pelicans and other sea creatures, the Octonauts and the birds work together to clean it up.

Season 4

  • S04E01 The Mantis Shrimp

    • September 30, 2015
    • CBeebies

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

  • S04E02 The Walrus Pups

    • September 29, 2015
    • CBeebies

    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!

  • S04E03 The Poison Dart Frogs

    • September 23, 2015
    • CBeebies

    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.

  • S04E04 The Hidden Lake

    • September 24, 2015
    • CBeebies

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

  • S04E05 The Octopod Mystery

    • September 25, 2015
    • CBeebies

    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.

  • S04E06 The Baby Sea Turtles

    • September 28, 2015
    • CBeebies

    As newborn baby sea turtles make their way to the ocean, the Octonauts must steer them clear a giant wave and hungry predators.

  • S04E07 The Tree Lobsters

    • October 2, 2015
    • CBeebies

    When a storm washes Peso onto a mysterious, rocky island, he meets a band of lobster-like insects thought to be extinct.

  • S04E08 The Convict Fish

    • December 14, 2015
    • CBeebies

    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.

  • S04E09 The Bomber Worms

    • March 14, 2016
    • CBeebies

    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.

  • S04E10 The Baby Gator

    • March 14, 2016
    • CBeebies

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

  • S04E11 The Surfing Snails

    • March 22, 2016
    • CBeebies

    When surfing snails are swept out to sea by a huge wave, it's up to Dashi and the Octonauts to save them before their bubble rafts pop!

  • S04E12 The Crawfish

    • March 22, 2016
    • CBeebies

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

  • S04E13 The Great Swamp Search

    • December 3, 2016
    • CBeebies

    Tweak and the Octonauts go to The Everglades to visit her dad, Ranger Marsh and help him rescue some non-native creatures before a storm hits. The team's recently built GUP-K is also there to save the day.

  • S04E14 Operation Cooperation

    • April 4, 2016
    • CBeebies

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

  • S04E15 The Flamingos

    • April 4, 2016
    • CBeebies

    The Octonauts wade through a swamp to find a lost flamingo chick before hungry predators do!

  • S04E16 The Hippos

    • June 9, 2016
    • CBeebies

    Returning home from Africa, the Octonauts encounter a gang of large, territorial hippos.

  • S04E17 The Kelp Monster Mystery

    • June 4, 2016
    • CBeebies

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

  • S04E18 The Yellow-Bellied Sea Snakes

    • June 5, 2016
    • CBeebies

    When a mass of poisonous sea snakes get stranded on a beach, Peso and the Octonauts must somehow get them all back into the ocean.

  • S04E19 The Loneliest Whale

    • October 1, 2015
    • CBeebies

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

  • S04E20 The Spinner Dolphins

    • June 13, 2016
    • CBeebies

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

  • S04E21 The Coelacanth

    • June 7, 2016
    • CBeebies

    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.

  • S04E22 Operation Deep Freeze

    • December 15, 2015
    • CBeebies

    Captain Barnacles runs into an old friend - an arctic fox named Professor Natquik - in Antarctica. They must work together with the other Octonauts to prevent a group of penguins from falling into an ice chasm.

  • S04E23 The Emperor Penguins

    • December 16, 2015
    • CBeebies

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

  • S04E24 The Tiger Shark

    • June 8, 2016
    • CBeebies

    The young Tiger Star is hungry and willing to eat anything or anyone.

  • S04E25 The Sunfish

    • June 14, 2016
    • CBeebies

    The Octonauts must help a giant sunfish who can't swim straight, before it hurts other sea creatures and itself.

  • S04E26 The Coconut Crisis

    • June 6, 2016
    • CBeebies

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

Additional Specials

  • Movies

    SPECIAL 0x1 Octonauts and the Caves of Sac Actun

    • August 14, 2020
    • Netflix

    The Octonauts embark on an underwater adventure, navigating a set of challenging caves to help a small octopus friend return home to the Caribbean Sea.

  • Movies

    SPECIAL 0x2 The Octonauts & The Great Barrier Reef

    • October 13, 2020
    • Netflix

    In this musical special, the Octonauts must find a way to hold back hungry swarms of coral-eating starfish to save a new friend’s fragile reef home.

  • Movies

    SPECIAL 0x3 Octonauts: The Ring of Fire

    • March 30, 2021

    The Octonauts create a Mantis Shrip Robot to save the oceanic creatures from a tsunami and volcanic eruptions in the Pacific Ring of Fire.