Season 1
S1.E1 ∙ The Whale SharkS1.E2 ∙ The Undersea StormS1.E3 ∙ The Crab and UrchinS1.E4 ∙ The Walrus ChiefS1.E5 ∙ The Flying FishS1.E6 ∙ The Giant SquidS1.E7 ∙ The OrcasS1.E8 ∙ Octonauts and the Great Algae EscapeS1.E9 ∙ Octonauts and the RemipedesS1.E10 ∙ Octonauts and the Speedy SailfishS1.E11 ∙ Octonauts and the Blobfish BrothersS1.E12 ∙ Octonauts and the Monster MapS1.E13 ∙ Octonauts and the Lost Sea StarS1.E14 ∙ Octonauts and the Albino Humpback WhaleS1.E15 ∙ Octonauts and the Giant Kelp ForestS1.E16 ∙ Octonauts and the Enemy AnemonesS1.E17 ∙ The NarwhalS1.E18 ∙ The Midnight ZoneS1.E19 ∙ The Snapping ShrimpS1.E20 ∙ The Snot Sea CucumberS1.E21 ∙ The Giant WhirlpoolS1.E22 ∙ The Hermit CrabsS1.E23 ∙ The Mixed Up WhalesS1.E24 ∙ The Kelp Forest RescueS1.E25 ∙ The Decorator CrabS1.E26 ∙ The Beluga WhalesS1.E27 ∙ The Hungry Pilot FishS1.E28 ∙ The Vampire SquidS1.E29 ∙ The Seahorse TaleS1.E30 ∙ The Giant JellyS1.E31 ∙ The Cookiecutter SharksS1.E32 ∙ The OarfishS1.E33 ∙ The Combtooth BlennyS1.E34 ∙ The Jellyfish BloomS1.E35 ∙ The Baby DolphinS1.E36 ∙ The Scary SpookfishS1.E37 ∙ The Arctic OrcasS1.E38 ∙ The Slime EelsS1.E39 ∙ The Enormous Elephant SealS1.E40 ∙ The Sardine SchoolS1.E41 ∙ The Dolphin Reef RescueS1.E42 ∙ The Eel OrdealS1.E43 ∙ The Marine IguanasS1.E44 ∙ The Dwarf LanternsharkS1.E45 ∙ The Pirate ParrotfishS1.E46 ∙ The Electric Torpedo RayS1.E47 ∙ The Crafty CuttlefishS1.E48 ∙ The Lost Lemon SharkS1.E49 ∙ The Humuhumunukunukuapua'aS1.E50 ∙ The Giant Spider Crab
Season 2
S2.E1 ∙ The Octonauts and the Colossal SquidS2.E2 ∙ The Octonauts and the Adelie PenguinsS2.E3 ∙ The Octonauts and the Coconut CrabsS2.E4 ∙ The Octonauts and the Great White SharkS2.E5 ∙ The Octonauts and the Sea SnakesS2.E6 ∙ The Octonauts and the Bowhead WhalesS2.E7 ∙ The Octonauts and the JawfishS2.E8 ∙ The Octonauts and the Porqupine PufferfishS2.E9 ∙ The Octonauts and the DamselfishS2.E10 ∙ The Octonauts and the Scared Sperm WhaleS2.E11 ∙ The Octonauts and the Long Armed SquidS2.E12 ∙ The Octonauts and the Fiddler CrabsS2.E13 ∙ The Octonauts and the Manta RaysS2.E14 ∙ The Octonauts and the Swashbuckling SwordfishS2.E15 ∙ The Octonauts and the TriggerfishS2.E16 ∙ Octonauts and the Mimic OctopusS2.E17 ∙ Octonauts and the LionfishS2.E18 ∙ Octonauts and the Leafy Sea DragonsS2.E19 ∙ Octonauts and the ManateesS2.E20 ∙ Octonauts and the Saltwater CrocodileS2.E21 ∙ Octonauts and the Humphead ParrotfishS2.E22 ∙ Octonauts and the Gulper Eels
Season 3
S3.E1 ∙ The Octonauts and the SiphonophoreS3.E2 ∙ The Octonauts and the Water BearsS3.E3 ∙ The Octonauts and the Cone SnailS3.E4 ∙ The Octonauts & the Artificial ReefS3.E5 ∙ The Octonauts and the Humpback WhalesS3.E6 ∙ The Octonauts and the PelicansS3.E7 ∙ The Octonauts & the Sea PigsS3.E8 ∙ The Octonauts and the Yeti CrabS3.E9 ∙ The Octonauts and the BaracudasS3.E10 ∙ The Octonauts and the Duck-Billed PlatypusS3.E11 ∙ The Octonauts and the Sea SkatersS3.E12 ∙ The Octonauts and the MudskippersS3.E13 ∙ The Octonauts and the Harbor SealS3.E14 ∙ The Octonauts and the Lion's Mane JellyfishS3.E15 ∙ Octonauts & the Red Rock CrabsS3.E16 ∙ The Octonauts and the Sea SpongeS3.E17 ∙ The Octonauts and the Immortal JellyfishS3.E18 ∙ The Octonauts and the Urchin InvasionS3.E19 ∙ The Octonauts and the Hammerhead SharksS3.E20 ∙ The Octonauts and the Loggerhead TurtleS3.E21 ∙ The Octonauts and the Great Arctic AdventureS3.E22 ∙ The Octonauts & the Mariana Trench Adventure
Season 4
S4.E1 ∙ The Octonauts and the Poison Dart FrogsS4.E2 ∙ Octonauts and the Hidden LakeS4.E3 ∙ Octonauts and the Octopod MysteryS4.E4 ∙ Octonauts and the Baby Sea TurtlesS4.E5 ∙ Octonauts and the Walrus PupsS4.E6 ∙ Octonauts and the Mantis ShrimpS4.E7 ∙ Octonauts and the Loneliest WhaleS4.E8 ∙ Octonauts and the Tree LobstersS4.E9 ∙ Octonauts and the Convict FishS4.E10 ∙ Octonauts and the Emperor PenguinsS4.E11 ∙ Octonauts and the Baby GatorS4.E12 ∙ Octonauts and the Bomber WormsS4.E13 ∙ Octonauts and the CrawfishS4.E14 ∙ The Octonauts and The Surfing SnailsS4.E15 ∙ Octonauts and the Kelp Monster MysteryS4.E16 ∙ Octonauts and the HippopotamusS4.E17 ∙ Octonauts and the FlamingosS4.E18 ∙ Octonauts and Operation CooperationS4.E19 ∙ The Octonauts and the Tiger SharkS4.E20 ∙ The Octonauts and the CoelacanthS4.E21 ∙ Octonauts and the Yellow-Bellied Sea SnakesS4.E22 ∙ Octonauts and the Spinner DolphinsS4.E24 ∙ Octonauts and the SunfishS4.E25 ∙ Octonauts and the Great Swamp SearchS4.E26 ∙ Octonauts and the Coconut Crisis/SunfishS4.E27 ∙ Octonauts and the Operation Deep Freeze
