The Octonauts expand their exploration beyond the sea - and onto land. With new rides and new friends, they'll protect any habitats and animals at risk.
Where to Watch Season 4
25 Episodes
Solar Storm
E1
Solar StormA solar storm throws off some whales’ senses of direction, as well as the Octonauts.
Frigatebird
E2
FrigatebirdTracker and Kwazii help some fish whose food keeps getting stolen by a frigatebird.
Madagascar Tsingy
E3
Madagascar TsingyWhen Selva encounters an injured creature, Peso journeys to provide medical aid.
Permafrost Problem
E4
Permafrost ProblemThe Octonauts help when they discover melting permafrost endangering an ecosystem.
Mudslide
E5
MudslideWhen a rainstorm surges, the Octonauts contend with an oncoming mudslide.
Honeybees
E6
HoneybeesThe Octonauts help a colony of honeybees that are trapped in a sinking tree.
Boiling River
E7
Boiling RiverWhile in search of a boiling river, Kwazii and Paani meet some tamarin monkeys.
Kalahari Copycat
E8
Kalahari CopycatWhen a fire threatens a meerkat burrow, the Octonauts must put it out.
Ringed Seals
E9
Ringed SealsArctic ringed seals are threatened when warming temperatures diminish their snow caves.
Alpine Twist
E10
Alpine TwistThe Octonauts assist an alpine swift to catch up with its flock.
Elephant Swim Lesson
E11
Elephant Swim LessonA baby elephant separated from its herd needs the Octonauts' help swimming to safety.
Hazardous Habitats
E12
Hazardous HabitatsWhile collecting pictures, Dashi and Shellington get trapped in a flooding cave.
Iguazu Falls
E13
Iguazu FallsThe Octonauts must clear a logjam while protecting a family of birds.
Arctic Blizzard
E14
Arctic BlizzardWhen a blizzard hits, Captain Barnacles will need to use all his Arctic survival tactics.
Gobi Desert
E15
Gobi DesertA replanting mission is interrupted when a gazelle goes missing just as a sandstorm hits.
Caddisfly Silk
E16
Caddisfly SilkOn a mission to study caddisfly silk, Bud and Paani get washed down a river.
Mudflat Mission
E17
Mudflat MissionThe Octonauts help rebuild some mudflats while reuniting a lost bird with its flock.
Lost Bottlenose Dolphins
E18
Lost Bottlenose DolphinsTwo dolphins get stuck in a coastal saltwater lake during low tide.
Desert Creatures
E19
Desert CreaturesKwazii and Periwinkle try to help a bird found in the Sonoran Desert.
Hawaiian Monk Seals
E20
Hawaiian Monk SealsThe Octonauts must repair a coral reef protecting a lagoon from surrounding sharks.
Great Pacific Clean-up
E21
Great Pacific Clean-upThe Octonauts and Octo-Agents work together to clean up the Great Pacific Garbage Patch.
Volcano Sharks
E22
Volcano SharksWhen the underwater Kavachi volcano erupts, Ryla calls on the Octonauts to help.
Billabong Mystery
E23
Billabong MysteryTracker and Koshi’s bird-studying mission is upended when a mysterious egg appears.
Spider Crab Surprise
E24
Spider Crab SurpriseThe Octonauts identify a mysterious creature that turns out to be a spider crab in need.
Mysterious Webs
E25
Mysterious WebsWhen the Reef Base’s power is knocked out, Octo-Agents lead the charge to restore it.
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