Season 1
All Episodes
Episode 1
The Undersea Storm
October 5, 2010
As a huge storm heads towards the headquarters, the Octonaut crew hurriedly goes into preparation. However, Kwaji, who went out to test drive the expedition ship, is unable to return to Octopold because he is rescuing the animals.
Episode 2
The Giant Squid
October 11, 2010
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.
Episode 3
The Great Algae Escape
October 13, 2010
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.
Episode 4
The Walrus Chief
October 7, 2010
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.
Episode 5
The Flying Fish
October 8, 2010
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.
Episode 6
The Narwhal
October 26, 2010
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.
Episode 7
The Monster Map
October 19, 2010
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.
Episode 8
The Crab and the Urchin
October 6, 2010
The crew pursues crustaceans who’ve hijacked the Octopod.
Episode 9
The Albino Humpback Whale
October 21, 2010
The Octonauts help out an Albino Humpback Whale with a nasty sunburn.
Episode 10
The Remipedes
October 14, 2010
When Shellington gets lost in a dark sea cave, he gets unexpected assistance from some blind Remipedes.
Episode 11
The Orcas
October 12, 2010
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.
Episode 12
The Blobfish Brothers
October 18, 2010
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.
Episode 13
The Decorator Crab
November 5, 2010
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.
Episode 14
The Whale Shark
October 4, 2010
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.
Episode 15
The Cookiecutter Sharks
December 13, 2010
Some mysterious holes that keep appearing in the Octonauts' equipment turn out to be the work of cookiecutter sharks whose bioluminescence initially made them invisible against the light coming down from the sea surface.
Episode 16
The Jellyfish Bloom
December 16, 2010
When Shellington gets trapped in the middle of a massive Jellyfish bloom, it's up to the Octonauts to rescue him.
Episode 17
The Speedy Sailfish
October 15, 2010
When all the Gups go out of control, Barnacles and Kwazii leap onto the backs of some speedy Sailfish to round them up.
Episode 18
The Vampire Squid
December 8, 2010
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.
Episode 19
The Humuhumunukunukuapua'a
February 10, 2011
When the Octopod's waterworks are flooded with frightened Humuhumu fish, the Octonauts have to find a way to flush them out.
Episode 20
The Giant Spider Crab
February 11, 2011
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.
Episode 21
The Giant Kelp Forest
October 22, 2010
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.
Episode 22
The Hermit Crabs
November 2, 2010
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.
Episode 23
The Hungry Pilot Fish
December 7, 2010
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.
Episode 24
The Beluga Whales
December 6, 2010
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.
Episode 25
The Snot Sea Cucumber
October 29, 2010
After an underwater tremor, an injured sea cucumber named Slippy gets loose on the Octopod, so to let her breathe, they flood the ship!
Episode 26
The Giant Whirlpool
November 1, 2010
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.
Episode 27
The Slime Eels
January 26, 2011
Kwazii covets the treasure in a sunken pirate ship, but its protected by slime squirting Slime Eels.
Episode 28
The Arctic Orcas
January 25, 2011
When Captain Barnacles and Peso get lost in the icy Arctic sea, a pod of Orcas help the Octonauts find them.
Episode 29
The Lost Sea Star
October 20, 2010
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.
Episode 30
The Giant Jelly
December 10, 2010
The Octonauts must rescue Peso when he gets trapped inside a giant ctenophore.
Episode 31
The Snapping Shrimp
October 28, 2010
The Octonauts encounter a snapping shrimp – a small creature that uses its claws to make a big, and stunning, noise.
Episode 32
The Kelp Forest Rescue
November 4, 2010
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.
Episode 33
The Enormous Elephant Seal
January 27, 2011
When Peso and the Octonauts aid an enormous Elephant Seal, he overstays his welcome in the Octopod.
Episode 34
The Sardine School
January 28, 2011
The Octonauts must work together as a team to help a lost sardine find her school.
Episode 35
The Eel Ordeal
February 1, 2011
The Octonauts travel up a treacherous river to help a young migrating eel on her difficult journey.
Episode 36
The Dolphin Reef Rescue
January 31, 2011
When the Octonauts all pitch in to help save a sick coral reef, they get some unexpected help from a pod of playful dolphins.
Episode 37
The Pirate Parrotfish
February 4, 2011
When the Octonauts go on a pirate treasure hunt, Kwazii meets a Parrotfish.
Episode 38
The Electric Torpedo Rays
February 7, 2011
Some electric torpedo rays give the Octopod a jump-start when its batteries go flat during a trip to see Tweak's pal, Sandy the leatherback sea turtle.
Episode 39
The Midnight Zone
October 27, 2010
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.
Episode 40
The Mixed-Up Whales
November 3, 2010
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.
Episode 41
The Seahorse Tale
December 9, 2010
After a storm, the Octonauts help a female seahorse search for her missing mate. She tells them, to Kwazii's surprise, that the missing male seahorse is about to give birth to baby seahorses!
Episode 42
The Enemy Anemones
October 25, 2010
The Octonauts land on an island for a picnic but must first help some crabs trapped between two warring groups of aggregate anemones. Meanwhile back on the Octopod, a horde of out of control puddings are attacking. Peso wins the contest between 2 types of blobs.
Episode 43
The Crafty Cuttlefish
February 8, 2011
Captain Barnacles allows Tunip to use his Octo-compass. But when Tunip loses it, a cuttlefish takes it.
Episode 44
The Lost Lemon Shark
February 9, 2011
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.
Episode 45
The Baby Dolphin
December 17, 2010
When a young dolphin follows Kwazii home, he has to babysit while the other Octonauts search for its mother.
Episode 46
The Scary Spookfish
January 24, 2011
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.
Episode 47
The Oarfish
December 14, 2010
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.
Episode 48
The Combtooth Blenny
December 15, 2010
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.
Episode 49
The Marine Iguanas
February 2, 2011
The team are preparing for a feast of red seaweed on the Galapagos Islands but a trio of salt-sneezing marine iguanas raid the Octopod and eat it all!
Episode 50
The Dwarf Lantern Shark
February 3, 2011
Down in the darkness of the ocean deep, Peso and the Octonauts must help a tiny, injured Dwarf Lantern Shark.