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Private Notes
Kwazii and Dashi become entangled in a strange deep-sea creature - a siphonophore.
The gang ventures into a red-hot lava tube to rescue a tiny water bear that does not seem to mind the heat at all.
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.
When an underwater storm destroys a small reef, Tweak and her crew try to convert the Gup-F into an artificial equivalent.
When a sardine swallows the key to a treasure chest, a humpback whale helps Kwazii track it down.
When a floating garbage patch endangers a flock of pelicans and other sea creatures, the Octonauts and the birds work together to clean it up.
The Octonauts must stop a huge herd of sea pigs before they march blindly into the Mariana Trench - the deepest point on earth!
As Tweak tests the Gup-X deep down in the Midnight Zone, a yeti crab damages the ship, endangering itself and the Octonauts.
Shellington and the Vegimals' mission to replant a mangrove forest is put in peril by a school of toothy barracudas.
While rescuing river creatures after a storm, the Octonauts find a strange egg and come under attack by stinging platypuses.
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 ocean.
The Octonauts attempt to keep the peace amongst a trio of mudskippers whose home has been flooded.
When Peso's patient, a remora fish, mysteriously disappears, the Octonauts enlist a unique undersea detective - a harbour seal.
A lion's mane jellyfish gets its long and stingy tentacles tangled in the bubble engine, unintentionally flooding the Octopod and causing havoc.
When Shellington and the crew try to gather some skittish crabs who have drifted away from home, they get help from some old friends.
A sea sponge that houses other sea creatures in its pores suffers from a mysterious illness and Peso must figure out the cause.
Shellington and the Octonauts try to track an unusual creature: a jellyfish that can transform from old to young repeatedly - and live forever!
The Octonauts head to the kelp forest to visit Shellington's sister, Pearl, and her newborn son Periwinkle - only to find the forest endangered by an infestation of kelp-eating urchins!
The Octonauts study a group of baby hammerhead sharks as they hunt.
Barnacles seeks guidance from a mysterious sea turtle.
