Octonauts (2010–present)

1. S01E01The Undersea StormOctober 5, 2010—As a huge storm heads towards the headquarters, the Octonaut crew hurriedly goes into preparation. However, Kwaji, who went out to test driv
2. S01E02The Giant SquidOctober 11, 2010 10.0The 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
3. S01E03The Great Algae EscapeOctober 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-infe
4. S01E04The Walrus ChiefOctober 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.
5. S01E05The Flying FishOctober 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 af
6. S01E06The NarwhalOctober 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, c
7. S01E07The Monster MapOctober 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
8. S01E08The Crab and the UrchinOctober 6, 2010—The crew pursues crustaceans who’ve hijacked the Octopod.
9. S01E09The Albino Humpback WhaleOctober 21, 2010—The Octonauts help out an Albino Humpback Whale with a nasty sunburn.
10. S01E10The RemipedesOctober 14, 2010—When Shellington gets lost in a dark sea cave, he gets unexpected assistance from some blind Remipedes.
11. S01E11The OrcasOctober 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,
12. S01E12The Blobfish BrothersOctober 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, gel
13. S01E13The Decorator CrabNovember 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 th
14. S01E14The Whale SharkOctober 4, 2010 7.5When 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
15. S01E15The Cookiecutter SharksDecember 13, 2010—Some mysterious holes that keep appearing in the Octonauts' equipment turn out to be the work of cookiecutter sharks whose bioluminescence i
16. S01E16The Jellyfish BloomDecember 16, 2010—When Shellington gets trapped in the middle of a massive Jellyfish bloom, it's up to the Octonauts to rescue him.
17. S01E17The Speedy SailfishOctober 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.
18. S01E18The Vampire SquidDecember 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
19. S01E19The Humuhumunukunukuapua'aFebruary 10, 2011—When the Octopod's waterworks are flooded with frightened Humuhumu fish, the Octonauts have to find a way to flush them out.
20. S01E20The Giant Spider CrabFebruary 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.
21. S01E21The Giant Kelp ForestOctober 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 int
22. S01E22The Hermit CrabsNovember 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
23. S01E23The Hungry Pilot FishDecember 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 happe
24. S01E24The Beluga WhalesDecember 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
25. S01E25The Snot Sea CucumberOctober 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!
26. S01E26The Giant WhirlpoolNovember 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 i
27. S01E27The Slime EelsJanuary 26, 2011—Kwazii covets the treasure in a sunken pirate ship, but its protected by slime squirting Slime Eels.
28. S01E28The Arctic OrcasJanuary 25, 2011—When Captain Barnacles and Peso get lost in the icy Arctic sea, a pod of Orcas help the Octonauts find them.
29. S01E29The Lost Sea StarOctober 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.
30. S01E30The Giant JellyDecember 10, 2010—The Octonauts must rescue Peso when he gets trapped inside a giant ctenophore.
31. S01E31The Snapping ShrimpOctober 28, 2010—The Octonauts encounter a snapping shrimp – a small creature that uses its claws to make a big, and stunning, noise.
32. S01E32The Kelp Forest RescueNovember 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
33. S01E33The Enormous Elephant SealJanuary 27, 2011—When Peso and the Octonauts aid an enormous Elephant Seal, he overstays his welcome in the Octopod.
34. S01E34The Sardine SchoolJanuary 28, 2011—The Octonauts must work together as a team to help a lost sardine find her school.
35. S01E35The Eel OrdealFebruary 1, 2011—The Octonauts travel up a treacherous river to help a young migrating eel on her difficult journey.
36. S01E36The Dolphin Reef RescueJanuary 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.
37. S01E37The Pirate ParrotfishFebruary 4, 2011—When the Octonauts go on a pirate treasure hunt, Kwazii meets a Parrotfish.
38. S01E38The Electric Torpedo RaysFebruary 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
39. S01E39The Midnight ZoneOctober 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 spe
40. S01E40The Mixed-Up WhalesNovember 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
41. S01E41The Seahorse TaleDecember 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
42. S01E42The Enemy AnemonesOctober 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. Meanwh
43. S01E43The Crafty CuttlefishFebruary 8, 2011—Captain Barnacles allows Tunip to use his Octo-compass. But when Tunip loses it, a cuttlefish takes it.
44. S01E44The Lost Lemon SharkFebruary 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.
45. S01E45The Baby DolphinDecember 17, 2010—When a young dolphin follows Kwazii home, he has to babysit while the other Octonauts search for its mother.
46. S01E46The Scary SpookfishJanuary 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 Spookfi
47. S01E47The OarfishDecember 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
48. S01E48The Combtooth BlennyDecember 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 se
49. S01E49The Marine IguanasFebruary 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 e
50. S01E50The Dwarf Lantern SharkFebruary 3, 2011—Down in the darkness of the ocean deep, Peso and the Octonauts must help a tiny, injured Dwarf Lantern Shark.

Season 1 ranked & reviewed

1. S02E01The Colossal SquidNovember 19, 2012 10.0The Octopod is attacked by a colossal squid, who drags the ship down an abyssal trench, forcing Barnacles and Kwazii to make a perilous swim
2. S02E02The Adelie PenguinsNovember 20, 2012 10.0While Kwazii and Peso have their hands full babysitting a bunch of Adelie penguin chicks, Captain Barnacles must rescue the chicks' parents
3. S02E03The Coconut CrabsNovember 21, 2012—Kwazii finds a mysterious, unbreakable coconut, so the Octonauts seek out the help of some large, island-dwelling coconut crabs to open it.
4. S02E04The Great White SharkNovember 22, 2012—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 cal
5. S02E05The Sea SnakesNovember 23, 2012—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
6. S02E06The Bowhead WhalesNovember 26, 2012—When the Octonauts are unable to rescue a group of Narwhals trapped behind arctic ice, they recruit a Bowhead Whale to help them break throu
7. S02E07The JawfishNovember 27, 2012—A mouth-brooding jawfish father has lost his eggs, and the Octonauts must brave strong currents and other obstacles to help get them back to
8. S02E08The Porcupine PufferNovember 28, 2012—Barnacles, Kwazii and Peso venture back inside a whale shark to retrieve a Porcupine Puffer Fish that was accidentally swallowed.
9. S02E09The DamselfishNovember 29, 2012—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 wi
10. S02E10The Scared Sperm WhaleNovember 30, 2012—A timid sperm whale must help the Octonauts release Peso from a giant clam.
11. S02E11The Long Armed SquidMarch 11, 2013—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 l
12. S02E12The Fiddler CrabsMarch 12, 2013—The Octonauts help clean up a beach after a storm, but things get complicated when the resident fiddler crabs hijack the Gup-D!
13. S02E13The Manta RaysMarch 13, 2013—The Octonauts help a young manta ray find the secret manta ray feeding grounds, but when they finally locate it, the Octonauts become caught
14. S02E14The Swashbuckling SwordfishMarch 14, 2013—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 searc
15. S02E15The TriggerfishMarch 15, 2013—The Octonauts' floating temperature sensors alert them to a risk of waterspouts due to a rise in sea surface temperature so they decide to r
16. S02E16The Mimic OctopusMay 13, 2013—The Octonauts recruit a shape-shifting mimic octopus to help them recover an important vial of medicinal algae from a moray eel's lair.
17. S02E17The LionfishMay 14, 2013—The Octonauts get more than they bargained for when they use the Octopod to transport a pair of invasive lionfish back to their native habit
18. S02E18The Leafy Sea DragonsMay 15, 2012—When two young leafy sea dragons are accidentally separated from their father and brought onboard the Octopod, the Octonauts must find them
19. S02E19The ManateesMay 16, 2013—Running out of air, Barnacles struggles to free his paw from the mouth of a giant clam, while simultaneously directing his crew in a delicat
20. S02E20The Saltwater CrocodileMay 17, 2013—When a gigantic saltwater crocodile wanders into freezing waters, the Octonauts must figure out how to get the predator back to his warm wat
21. S02E21The Humphead ParrotfishSeptember 2, 2013—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 parrotfi
22. S02E22The Gulper EelsSeptember 3, 2013—When hungry gulper eels as well as undersea tremors threaten Inkling and Kwazii, Dashi uses the new, multi-purpose Octo Max Suit to rescue t
23. S02E23Episode 23—

Season 2 ranked & reviewed

1. S03E01The SiphonophoreSeptember 4, 2013 10.0Kwazii and Dashi become entangled in a strange deep-sea creature - a siphonophore.
2. S03E02The Water BearsSeptember 5, 2013 10.0The gang ventures into a red-hot lava tube to rescue a tiny water bear that does not seem to mind the heat at all.
3. S03E03The Cone SnailSeptember 6, 2013—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.
4. S03E04The Artificial ReefSeptember 9, 2013—When an underwater storm destroys a small reef, Tweak and her crew try to convert the Gup-F into an artificial equivalent.
5. S03E05The Humpback WhalesSeptember 10, 2013—When a sardine swallows the key to a treasure chest, a humpback whale helps Kwazii track it down.
6. S03E06The PelicansSeptember 11, 2013—When a floating garbage patch endangers a flock of pelicans and other sea creatures, the Octonauts and the birds work together to clean it u
7. S03E07The Sea PigsSeptember 12, 2013—The Octonauts must stop a huge herd of sea pigs before they march blindly into the Mariana Trench - where there will be no access to food. B
8. S03E08The Yeti CrabSeptember 13, 2013—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 off all power, endang
9. S03E09The BarracudasMarch 10, 2014—Shellington and the Vegimals' mission to replant a mangrove forest is put in peril by a school of toothy barracudas.
10. S03E10The Duck-Billed PlatypusMarch 11, 2014—While rescuing river creatures after a storm, the Octonauts find a strange egg and come under attack by stinging platypuses.
11. S03E11The Sea SkatersMarch 12, 2014—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 oce
12. S03E12The MudskippersMarch 13, 2014—The Octonauts attempt to keep the peace amongst a trio of mudskippers whose home has been flooded.
13. S03E13The Harbour SealMarch 14, 2014—When Peso's patient, a remora fish, mysteriously disappears, the Octonauts enlist a unique undersea detective - a harbour seal.
14. S03E14The Lion's Mane JellyfishMarch 17, 2014—A lion's mane jellyfish gets its long and stingy tentacles tangled in the bubble engine, unintentionally flooding the Octopod and causing ha
15. S03E15The Red Rock CrabsMarch 18, 2014—When Shellington and the crew try to gather some skittish crabs who have drifted away from home, they get help from some old friends.
16. S03E16The Sea SpongeMarch 19, 2014—A sea sponge that houses other sea creatures in its pores suffers from a mysterious illness and Peso must figure out the cause.
17. S03E17The Immortal JellyfishMarch 20, 2014—Shellington and the Octonauts try to track an unusual creature: a jellyfish that can transform from old to young repeatedly - and live forev
18. S03E18The Urchin InvasionMarch 21, 2014—The Octonauts head to the kelp forest to visit Shellington's sister, Pearl, and her newborn son Periwinkle - only to find the forest endange
19. S03E19The Hammerhead SharksSeptember 21, 2015—The Octonauts meet some hammerheaded sharks, however, they can't sleep too well because Shellington and Professor Inkling have been arguing
20. S03E20The Loggerhead Sea TurtleSeptember 22, 2015—After an undersea tremor separates the Gup-X and its crew, Barnacles seeks guidance from a mysterious sea turtle.

Season 3 ranked & reviewed

1. S04E01Octonauts and the Poison Dart FrogsSeptember 23, 2015 10.0When a giant wave hurls Amazon River creatures up into the trees, the Octonauts must get them down safely, without disturbing poison dart fr
2. S04E02Octonauts and the Hidden LakeSeptember 24, 2015—The Octonauts are exploring Antarctica, when Shellington discovers strange microscopic creatures living under the ice.
3. S04E03Octonauts and the Octopod MysterySeptember 25, 2015—When the Octopod breaks down, Tweak and the crew search for a missing part aboard an abandoned prototype of the ship, not realising somethin
4. S04E04Octonauts and the Baby Sea TurtlesSeptember 28, 2015—As newborn baby sea turtles make their way to the ocean, the Octonauts must steer them clear a giant wave and hungry predators.
5. S04E05Octonauts and the Walrus PupsSeptember 29, 2015—Captain Barnacles and his niece and nephew, Ursa and Orson, must rescue walrus pups who are stranded on a runaway ice floe, before it collid
6. S04E06Octonauts and the Mantis ShrimpSeptember 30, 2015—The Octonauts must get 2 mantis shrimp to stop fighting before their powerful claw strikes destroy the Octopod.
7. S04E07Octonauts and the Loneliest WhaleOctober 1, 2015—The Octonauts follow a strange song to a lonely humpback whale.
8. S04E08Octonauts and the Tree LobstersOctober 2, 2015—When a storm washes Peso onto a mysterious, rocky island, he meets a band of lobster-like insects thought to be extinct.
9. S04E09Octonauts and the Convict FishDecember 14, 2015—The Octonauts evacuate the creatures living around a reef before a large archway collapses, but one stubborn convict fish refuses to move fr
10. S04E10Octonauts and the Emperor PenguinsDecember 16, 2015—The Octonauts journey across a dangerous expanse of ice to help a penguin mother get back to her family.
11. S04E11Octonauts and the CrawfishDecember 3, 2016—When a population of crawfish is stricken by illness, the Octonauts race to find a cure.
12. S04E12Octonauts and the FlamingosDecember 4, 2016—The Octonauts find a lost flamingo chick separated from his family and they have to return him there before hungry alligators do!
13. S04E13Octonauts and the Tiger SharkMay 27, 2017—When a hungry tiger shark eats the camera that Tweak's turtle friend Sandy gets in the Octopod, she and the Octonauts must rescue her before
14. S04E14Octonauts and the SunfishMay 28, 2017—When a huge sunfish enters the GUP-E, Peso and Kwazii must somehow get the large fish out of the Gup. Eventually they find out it's a Sunfis
15. S04E15Octonauts and the CoelacanthMay 29, 2017—While exploring a dark and spooky cave, The Octonauts find a strange fossil of a powerful prehistoric fish... but it may be more than just a
16. S04E16Octonauts and the Surfing SnailsSeptember 6, 2017—When surfing snails are swept out to sea, it's up to Dashi and the Octonauts to save them.
17. S04E17Octonauts and the Yellow Bellied Sea SnakesSeptember 13, 2017—When Peso gets stranded on a beach with a mass of poisonous snakes after a terrible storm, he and the Octonauts must somehow get them back t
18. S04E18Octonauts and the HipposSeptember 20, 2017—Trying to return home from a mission along an African river, the Octonauts have trouble getting past a gang of large, mud-splatting, territo
19. S04E19Octonauts and Operation CooperationSeptember 27, 2017—After Shellington crashes the GUP-D for the 3rd time, he and Kwazii team up with moray eels and grouper fish to help pick up the pieces and
20. S04E20Octonauts and the Bomber WormsOctober 23, 2017—While diving down to the Midnight Zone, the Octonauts are attacked by bomber worms.
21. S04E21Octonauts and the Kelp Monster MysteryOctober 24, 2017—Dashi teams up with her little sister Koshi to help the Octonauts solve a mysterious disappearance in the Kelp Forest. This is the second ep
22. S04E22Octonauts and the Coconut CrisisOctober 25, 2017—Kwazii takes a vacation on Coconut Island where he gets hit by some coconuts. Then he and the Octonauts must help their old friends the Coco
23. S04E23Octonauts and the Baby GatorOctober 26, 2017—Kwazii adopts a baby alligator naming him Nipper, but when it escapes the Octopod, he and the Octonauts must rescue him.
24. S04E24Octonauts and the Spinner DolphinsOctober 27, 2017—The Octonauts struggle to save a pod of spinner dolphins who seem to be just swimming in their sleep.

Season 4 ranked & reviewed

1. S05E01Whales of MysteryDecember 28, 2020—Shellington is excited to find the distinctive tooth of a very rare creature, the spade-toothed beaked whale. Now, the Octonauts must find t
2. S05E03Blue Whale RescueDecember 30, 2020 10.0When Kwazii discovers a blue whale with an injured tail, the Octonauts attempt to use a giant net and Octofloats to keep it from sinking. Me
3. S05E04Ghost ShipDecember 31, 2020—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 ha
4. S05E05Feeding FrenzyJanuary 1, 2021—While exploring a reef, Shellington and Dashi accidentally trigger a feeding frenzy with multiple sharks biting at anything that moves. As B
5. S05E06SawfishJanuary 2, 2021—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.
6. S05E07NautilusJanuary 3, 2021—Kwazii sets off on a monster hunt, and soon encounters a shelled creature called a Nautilus.
7. S05E08Grey WhalesJanuary 4, 2021—The Octonauts must help reunite a grey whale calf with his mother, keeping him well fed in the meantime.
8. S05E09Flying SquidJanuary 5, 2021—The Octonauts meet a flying squid who can help Kwazii's grandfather, Calico Jack, retrieve his treasure.
9. S05E10Sea LionsJanuary 6, 2021—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
10. S05E11Hawksbill Sea TurtleJanuary 7, 2021—The Octonauts must guide an ill-stricken hawksbill sea turtle into cooler waters, in order for her to lay healthy eggs.
11. S05E12Wood Eating CatfishJanuary 8, 2021—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.
12. S05E13Seven Sea SquirtsJanuary 9, 2021—The Octonauts help a band of algae-shooting sea squirts reunite in order to stop an outbreak in the reef.
13. S05E14BullfrogsJanuary 10, 2021—When the Vegimals accidentally bring bullfrogs into the Octopod, they must rally them up and bring them back home before the Octonauts find
14. S05E15Giant Sea SpidersJanuary 11, 2021—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.
15. S05E16Great Octo-Bot RescueJanuary 12, 2021—When the Octo-Bots sink into a lake of boiling hot sulfur, Kwazii has to rescue them before the surface hardens.
16. S05E17AxolotlJanuary 13, 2021—Captain Barnacles and Kwazii help a pair of singing female axolotls named George's mom (yellow) and George (pink) find a new watering hole,
17. S05E18BeaversJanuary 14, 2021—In order for a school of salmon to reach their nesting area, the Octonauts must enlist help from a family of beavers.
18. S05E19Zombie WormsJanuary 15, 2021—The Octolab is being eaten away by a group of zombie worms, tasking the crew with finding a new home for them.
19. S05E20Mud VolcanoesJanuary 16, 2021—While exploring the Mariana Trench, Shellington and Dashi come across a path full of mud volcanoes and a creature in need.
20. S05E21Tiger Fish and Blind ShrimpJanuary 17, 2021—The Octonauts encounter a tiger fish and blind shrimp who become separated.
21. S05E22Fish Mouth LouseJanuary 18, 2021—The Octonauts help a creature find his louse friend who got lost and could be in trouble.
22. S05E23Deep Ocean DiscoveryJanuary 19, 2021—Shellington’s sister and nephew, Pearl and Periwinkle, join him on a mission.
23. S05E24Silver SeaJanuary 20, 2021—The Octonauts encounter a blob of glowing liquid drifting on the ocean’s surface.
24. S05E25Bicolour FangblennyJanuary 21, 2021—The crew must catch a mysterious fish that’s out to bite every creature in the reef.
25. S05E26Scaly-Foot SnailJanuary 22, 2021—The Octonauts meet strong scaly foot snails and enlist them in trying to help save the Octo-Lab from falling into a crevice.
26. S05E27Chinese Giant SalamanderJanuary 23, 2021—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. T
27. S05E28Bluefin TunaMarch 27, 2023 10.0After an encounter with a school of migrating tuna, the Octonauts discover that one of the speedy fish, Tina, has been left behind. And she’

Season 5 ranked & reviewed

1. S06E01Episode 1July 26, 2021—
2. S06E02Episode 2July 27, 2021—
3. S06E03Episode 3July 28, 2021—
4. S06E04Episode 4July 29, 2021—
5. S06E05Episode 5July 30, 2021—
6. S06E06Episode 6July 31, 2021—
7. S06E07Episode 7August 1, 2021—
8. S06E08Episode 8August 2, 2021—
9. S06E09Episode 9August 3, 2021—
10. S06E10Episode 10August 4, 2021—
11. S06E11Episode 11August 5, 2021—
12. S06E12Episode 12August 6, 2021—
13. S06E13Episode 13August 7, 2021—
14. S06E14Episode 14August 8, 2021—
15. S06E15Episode 15August 9, 2021—
16. S06E16Episode 16August 10, 2021—
17. S06E17Episode 17August 11, 2021—
18. S06E18Episode 18August 12, 2021—
19. S06E19Episode 19August 13, 2021—
20. S06E20Episode 20August 14, 2021—
21. S06E21Episode 21August 15, 2021—
22. S06E22Episode 22August 16, 2021—
23. S06E23Episode 23August 17, 2021—
24. S06E24Episode 24August 18, 2021—
25. S06E25Episode 25August 19, 2021—
26. S06E26Episode 26August 20, 2021—

Season 6 ranked & reviewed

1. S07E01Episode 1May 27, 2022—
2. S07E02Episode 2May 28, 2022—
3. S07E03Episode 3May 29, 2022—
4. S07E04Episode 4May 29, 2022—
5. S07E05Episode 5May 31, 2022—
6. S07E06Episode 6June 1, 2022—
7. S07E07Episode 7June 2, 2022—
8. S07E08Episode 8June 3, 2022—
9. S07E09Episode 9June 4, 2022—
10. S07E10Episode 10June 5, 2022—
11. S07E11Episode 11June 6, 2022—
12. S07E12Episode 12June 7, 2022—
13. S07E13Episode 13June 8, 2022—
14. S07E14Episode 14June 9, 2022—
15. S07E15Episode 15June 10, 2022—
16. S07E16Episode 16June 11, 2022—
17. S07E17Episode 17June 12, 2022—
18. S07E18Episode 18June 13, 2022—
19. S07E19Episode 19June 14, 2022—
20. S07E20Episode 20June 15, 2022—
21. S07E21Episode 21June 16, 2022—
22. S07E22Episode 22June 17, 2022—
23. S07E23Episode 23June 18, 2022—
24. S07E24Episode 24June 19, 2022—
25. S07E25Episode 25June 20, 2022—
26. S07E26Episode 26June 21, 2022—

Season 7 ranked & reviewed

1. S08E01Episode 1May 26, 2023—
2. S08E02Episode 2May 27, 2023—
3. S08E03Episode 3May 28, 2023—
4. S08E04Episode 4May 29, 2023—
5. S08E05Episode 5May 30, 2023—
6. S08E06Episode 6May 31, 2023—
7. S08E07Episode 7June 1, 2023—
8. S08E08Episode 8June 2, 2023—
9. S08E09Episode 9June 3, 2023—
10. S08E10Episode 10June 4, 2023—
11. S08E11Episode 11June 5, 2023—
12. S08E12Episode 12June 6, 2023—
13. S08E13Episode 13June 7, 2023—
14. S08E14Episode 14June 8, 2023—
15. S08E15Episode 15June 9, 2023—
16. S08E16Episode 16June 10, 2023—
17. S08E17Episode 17June 11, 2023—
18. S08E18Episode 18June 12, 2023—
19. S08E19Episode 19June 13, 2023—
20. S08E20Episode 20June 14, 2023—
21. S08E21Episode 21June 15, 2023—
22. S08E22Episode 22June 16, 2023—
23. S08E23Episode 23June 17, 2023—
24. S08E24Episode 24June 18, 2023—
25. S08E25Episode 25June 19, 2023—
26. S08E26Episode 26June 20, 2023—

Season 8 ranked & reviewed

1. S09E01Episode 1June 21, 2023—
2. S09E02Episode 2June 22, 2023—
3. S09E03Episode 3June 23, 2023—
4. S09E04Episode 4June 24, 2023—
5. S09E05Episode 5June 25, 2023—
6. S09E06Episode 6June 26, 2023—
7. S09E07Episode 7June 27, 2023—
8. S09E08Episode 8June 28, 2023—
9. S09E09Episode 9June 29, 2023—
10. S09E10Episode 10June 30, 2023—
11. S09E11Episode 11July 1, 2023—
12. S09E12Episode 12July 2, 2023—
13. S09E13Episode 13July 3, 2023—
14. S09E14Episode 14July 4, 2023—
15. S09E15Episode 15July 5, 2023—
16. S09E16Episode 16July 6, 2023—
17. S09E17Episode 17July 7, 2023—
18. S09E18Episode 18July 8, 2023—
19. S09E19Episode 19July 9, 2023—
20. S09E20Episode 20July 10, 2023—
21. S09E21Episode 21July 11, 2023—
22. S09E22Episode 22July 12, 2023—
23. S09E23Episode 23July 13, 2023—
24. S09E24Episode 24July 14, 2023—
25. S09E25Episode 25July 15, 2023—
26. S09E26Episode 26July 16, 2023—

Season 9 ranked & reviewed

1. S10E01Episode 1July 17, 2023—
2. S10E02Episode 2July 18, 2023—
3. S10E03Episode 3July 19, 2023—
4. S10E04Episode 4July 20, 2023—
5. S10E05Episode 5July 21, 2023—
6. S10E06Episode 6July 22, 2023—
7. S10E07Episode 7July 23, 2023—
8. S10E08Episode 8July 24, 2023—
9. S10E09Episode 9July 25, 2023—
10. S10E10Episode 10July 26, 2023—
11. S10E11Episode 11July 27, 2023—
12. S10E12Episode 12July 28, 2023—
13. S10E13Episode 13July 29, 2023—
14. S10E14Episode 14July 30, 2023—
15. S10E15Episode 15July 31, 2023—
16. S10E16Episode 16August 1, 2023—
17. S10E17Episode 17August 2, 2023—
18. S10E18Episode 18August 3, 2023—
19. S10E19Episode 19August 4, 2023—
20. S10E20Episode 20August 5, 2023—
21. S10E21Episode 21August 6, 2023—
22. S10E22Episode 22August 7, 2023—
23. S10E23Episode 23August 8, 2023—
24. S10E24Episode 24August 9, 2023—
25. S10E25Episode 25August 10, 2023—
26. S10E26Episode 26August 11, 2023—

Season 10 ranked & reviewed