Episode 1
A solar storm throws off some whales’ senses of direction, as well as the Octonauts.
Episode 2
Tracker and Kwazii help some fish whose food keeps getting stolen by a frigatebird.
Episode 3
When Selva encounters an injured creature, Peso journeys to provide medical aid.
Episode 4
The Octonauts help when they discover melting permafrost endangering an ecosystem.
Episode 5
When a rainstorm surges, the Octonauts contend with an oncoming mudslide.
Episode 6
The Octonauts help a colony of honeybees that are trapped in a sinking tree.
Episode 7
While in search of a boiling river, Kwazii and Paani meet some tamarin monkeys.
Episode 8
When a fire threatens a meerkat burrow, the Octonauts must put it out.
Episode 9
Arctic ringed seals are threatened when warming temperatures diminish their snow caves.
Episode 10
The Octonauts assist an alpine swift to catch up with its flock.
Episode 11
A baby elephant separated from its herd needs the Octonauts' help swimming to safety.
Episode 12
While collecting pictures, Dashi and Shellington get trapped in a flooding cave.
Episode 13
The Octonauts must clear a logjam while protecting a family of birds.
Episode 14
When a blizzard hits, Captain Barnacles will need to use all his Arctic survival tactics.
Episode 15
A replanting mission is interrupted when a gazelle goes missing just as a sandstorm hits.
Episode 16
On a mission to study caddisfly silk, Bud and Paani get washed down a river.
Episode 17
The Octonauts help rebuild some mudflats while reuniting a lost bird with its flock.
Episode 18
Two dolphins get stuck in a coastal saltwater lake during low tide.
Episode 19
Kwazii and Periwinkle try to help a bird found in the Sonoran Desert.
Episode 20
The Octonauts must repair a coral reef protecting a lagoon from surrounding sharks.
Episode 21
The Octonauts and Octo-Agents work together to clean up the Great Pacific Garbage Patch.
Episode 22
When the underwater Kavachi volcano erupts, Ryla calls on the Octonauts to help.
Episode 23
Tracker and Koshi’s bird-studying mission is upended when a mysterious egg appears.
Episode 24
The Octonauts identify a mysterious creature that turns out to be a spider crab in need.
Episode 25
When the Reef Base’s power is knocked out, Octo-Agents lead the charge to restore it.
