Octonauts Wiki
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Season 1 is the first season of Octonauts.


# Title Original air date[11]
1 "Octonauts and the Whale Shark" 4 October 2010
When Dashi is swallowed by a whale shark she thought was a cave, the Octonauts venture inside it to rescue her. 
2 "Octonauts and the Undersea Storm" 5 October 2010
An undersea storm is approaching so Kwazii helps some creatures on a coral reef reach safety, but then he crashes the Gup-B while trying to race back to the Octopod. When the GUP-C's tow-rope snaps while rescuing him, some reef lobsters Kwazii helped earlier lend a hand by holding the broken rope ends together with their strong claws. 
3 "Octonauts and the Crab and Urchin" 6 October 2010
carrier crab and the urchin it keeps on top of its shell as a defence against predators[12] have a falling out. 
4 "Octonauts and the Walrus Chief" 7 October 2010
A walrus mistakes Peso's medical bag for a clam and takes it home. Walruses don't like other animals near their colonies, so Captain Barnacles, Kwazii and Peso disguise themselves as a fellow walrus to sneak into the dangerous colony and retrieve the medical bag. 
5 "Octonauts and the Flying Fish" 8 October 2010
A school of flying fish accidentally make off with Professor Inkling's rare book. 
6 "Octonauts and the Giant Squid" 11 October 2010
The Octonauts set out to find and photograph Inkling's long lost cousin, the giant squid. 
7 "Octonauts and the Orcas" 12 October 2010
An enormous Orca whale is stranded on a beach, and with some help from some crabs, the Octonauts manage to rescue it. 
8 "Octonauts and the Great Algae Escape" 13 October 2010
The crew must catch a runaway Octopod after it is hijacked by a group of crustaceans who are trying to flee an area of seabed being polluted by a broken pipeline. 
9 "Octonauts and the Remipedes" 14 October 2010
Shellington goes to search for a group of Remipedes in a cave but he hasn't driven the GUP-D before and ends up crashing it and breaking it. The other Octonauts try to save him but they get lost too. Luckily, a group of blind Remipedes help them find their way out of the cave. 
10 "Octonauts and the Speedy Sailfish" 15 October 2010
Tweak's remote control system for the Gups malfunctions, so Barnacles and Kwazii are forced to chase after them with the pedal-driven Gup-F. Luckily some speedy Sailfish, the fastest fish in the sea, are persuaded to show their off prowess by rounding up the speeding Gups. 
11 "Octonauts and the Blobfish Brothers" 18 October 2010
The Octonauts must evacuate some slow moving, gelatinous Blobfish before an undersea volcano erupts. 
12 "Octonauts and the Monster Map" 19 October 2010
Kwazii has a pirate map showing the location of a sunken treasure ship which allegedly harbours a Kraken-like sea monster (but which turns out to be an octopus which can change colour to camouflage itself). 
13 "Octonauts and the Lost Sea Star" 20 October 2010
A sea star (starfish) has got lost, but the Octonauts have to search the sea from top to bottom to find its home, as there are nearly 2000 species of sea star living at all levels of the ocean. On a reef in the Sunlight Zone they encounter a Sunflower seastar and a predatory Porcupine Pufferfish. In the Twilight Zone they encounter Brittle stars and get chased into a cave by a Wolf eel, where they notice the sea star glows in the dark, which means it is from the Midnight Zone. They end up crashing the Gup at the bottom of an ocean trench, but luminous sea stars light the way out for them. 
14 "Octonauts and the Albino Humpback Whale" 21 October 2010
The Octonauts think they've seen a ghost but it turns out to be an albino Humpback Whale which is moaning from the pain of some nasty sunburn. 
15 "Octonauts and the Giant Kelp Forest" 22 October 2010
Kwazii's favorite sub, the Gup B, goes missing in a huge kelp forest due to Kwazii pressing the eject button while the engine was active (Something Tweak advised him not to do) and the Octonauts must retrieve it. 
16 "Octonauts and the Enemy Anemones" 25 October 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 hoard of out of control puddings are attacking. 
17 "Octonauts and the Narwhal" 26 October 2010
Cruising underwater to Captain Barnacles' homeland, the North Pole, the Octopod gets trapped in the Arctic sea ice. But one of Barnacles' old friends, Boris the Narwhal, helps them to break through the ice with his long tusk. 
18 "Octonauts and the Midnight Zone" 27 October 2010
The Octonauts explore the deepest part of the ocean - the Midnight zone - where no daylight ever reaches and find some hydrothermal vents where vent fishlimpets and tube worms live, and also discover a new species of worm to put in Shellington's book. 
19 "Octonauts and the Snapping Shrimp" 28 October 2010
A little snapping shrimp with a big claw makes such a loud noise that it stuns the Octonauts. A video of it made by Dashi reveals that the sound and accompanying shock wave are caused by the shrimp making a cavitation bubble with her claw. 
20 "Octonauts and the Snot Sea Cucumber" 29 October 2010
An injured snot sea cucumber named Slippy gets loose on the Octopod, so to let her breathe, they flood the ship. 
21 "Octonauts and the Giant Whirlpool" 1 November 2010
The Octonauts need to save Tweak's good friend, Sandy the Leatherback sea turtle, when she is stuck in a wrong current of water heading for a whirlpool and needs to get to the beach to lay her eggs. 
22 "Octonauts and the Hermit Crabs" 2 November 2010
With half the crew stranded in a rock pool due to a low tide, Peso and Tweak help to remove a stuck Hermit Crab from the shell it has outgrown. 
23 "Octonauts and the Mixed Up Whales" 3 November 2010
The Octonauts clean and repair the Octopod, but the loud noises they are creating confuse the sonar of two Blue Whales who are looking for each other so much that they almost crash into the ship. 
24 "Octonauts and the Kelp Forest Rescue" 4 November 2010
Peso's little brother Pinto visits the Octonauts and gets an eyepatch from Kwazii. He becomes more interested in being a pirate than a medic (stating that he wanted to be a 'real' Octonaut like Kwazii). But when he helps Barnacles, Kwazii and Peso in a mission to help Dashi and Shellington escape from a kelp forest, he begins to like being a medic. 
25 "Octonauts and the Decorator Crab" 5 November 2010
The Octonauts stake out a thief, who turns out to be a decorator crab
26 "Octonauts and the Beluga Whales" 6 December 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. 
27 "Octonauts and the Hungry Pilot Fish" 7 December 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. 
28 "Octonauts and the Vampire Squid" 8 December 2010
On a solo training dive to the Midnight Zone, Peso encounters a hurt vampire squid. Scared by the sudden arrival of Kwazii and Captain Barnacles it sprays them with sticky bioluminescent mucus and flees, but in the end Peso is able to help it. 
29 "Octonauts and the Seahorse Tale" 9 December 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. 
30 "Octonauts and the Giant Jelly" 10 December 2010
The Octonauts must rescue Peso when he gets trapped inside a giant Comb Jelly
31 "Octonauts and the Cookiecutter Sharks" 13 December 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. 
32 "Octonauts and the Oarfish" 14 December 2010
Dashi catches a glimpse of an elusive creature that appears to be a giant sea serpent and manages to photograph its tail. At the Octopod Professor Inkling finds out that it is an Oarfish - the longest fish in the ocean.  
33 "Octonauts and the Combtooth Blenny" 15 December 2010
Kwazii crashes the GUP-E, leaving him and Peso marooned on a desert island inhabited by Combtooth Blenny a fish that can walk on land. Their SOS message to the Octonauts is relayed in increasingly garbled form via the Blenney, a giant squid, and an Angler fish
34 "Octonauts and the Jellyfish Bloom" 16 December 2010
Shellington gets trapped in a sea nettlejellyfish bloom whilst observing garden eels in the GUP-E. Barnacles, Kwazii and Peso attempt to save him but Barnacles gets stung by a jellyfish. Luckily, Peso heals it using vinegarand then goes to save Shellington along with Kwazii. 
35 "Octonauts and the Baby Dolphin" 29 December 2010
A young dolphin follows Kwazii home and the Octonauts must search for its mother. 
36 "Octonauts and the Scary Spookfish" 24 January 2011
Peso gets jammed in an ocean trench when the GUP-E's battery dies and is surprised by a strange deep sea fish with a transparent head: a Spookfish called Boo, whose ability to see vertically comes in handy as GUP-C winches GUP-E back up the narrow trench.  
37 "Octonauts and the ArcticOrcas" 25 January 2011
Captain Barnacles and Peso get lost in the icy Arctic sea when the GUP-E gets stuck in an iceberg and the gup finder is damaged. 
38 "Octonauts and the Slime Eels" 26 January 2011
In the North Atlantic, Kwazii searches the sunken shipwreck of his pirate grandfather, Calico Jack, for his gold spyglass. It's guarded by blind hagfish (slime eels), but their slime unexpectedly helps him when he gets stuck. Kwazii ends up leaving the spyglass because it's now the home of sea creatures. 
39 "Octonauts and the Enormous Elephant Seal" 27 January 2011
An enormous Elephant seal is brought into the Octopod to moult as moulting underwater is dangerous, and the Octonauts need to bring him to his beach. 
40 "Octonauts and the Sardine School" 29 January 2011
The Octonauts must work together as a team to help a lost sardine find her school. 
41 "Octonauts and the Dolphin Reef Rescue" 31 January 2011
Peso and the gang try to cure bleached dead areas on a coral reef by transplanting healthy coral, but a pod of playful dolphins make mischief for them until they realise that helping can be fun too. 
42 "Octonauts and the Eel Ordeal" 1 February 2011
In a rare journey into fresh waters (a river), the Octonauts follow some migrating eels and help an injured eel on his difficult journey when he gets stranded from the others. 
43 "Octonauts and the Marine Iguanas" 2 February 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. 
44 "Octonauts and the Dwarf Lantern shark" 3 February 2011
The Octonauts must help a tiny, injured Dwarf Lanternshark, but they have to find him first. 
45 "Octonauts and the Pirate Parrotfish" 4 February 2011
Kwazii discovers Calico Jack's Parrot Island treasure map behind an old photo. Whilst looking for the island they meet a Parrotfish, who helps them clear away dense algae and hide from vicious moray eels
46 "Octonauts and the Electric Torpedo Rays" 7 February 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. 
47 "Octonauts and the Crafty Cuttlefish" 8 February 2011
Captain Barnacles allows Tunip to use his Octo-compass. But when Tunip loses it, a Cuttlefish takes it. 
48 "Octonauts and the Lost Lemon Shark" 9 February 2011
The Octonauts look after a Lemon Shark who has hurt his nose and can't find his way home. 
49 "Octonauts and the Humuhumunukunukuapua'a" 10 February 2011
The Octopod's waterworks become flooded with frightened Humuhumu fish. 
50 "Octonauts and the Giant Spider Crab" 11 February 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.