When important objects go missing from their ship, the Octonauts stake out the thief who turns out to be a decorator crab, stealing their things to decorate his shell.
Kwazii is spooked when he spots what looks like a giant underwater spider! But it turns out to be a very old Spider Crab who needs the Octonauts' help!
When the Octopod's waterworks are flooded with frightened Humuhumu fish, the Octonauts have to find a way to flush them out!
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.
The Octonauts are on a mission to recover Captain Barnacle's lost Octo-compass, but it's been taken by a crafty, shape-shifting Cuttlefish!
Abigail is a super fan of Emma Booth. Abigail has been riding since she was three years old and has big dreams of representing Australia at the Paralympics. Abigail is hoping Paralympian, Emma, can give her some tips.
Kwazii covets the treasure in a sunken pirate ship - but it's protected by slime-squirting Slime Eels.
When Captain Barnacles and Peso get lost in the icy Arctic sea, a pod of Orcas help the Octonauts find them.
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 Spookfish.
When a young dolphin follows Kwazii home, he has to babysit while the other Octonauts search for its mother.
Caitlin's love is for all things cooking and that's why she is a Ben Shewry superfan. Caitlin goes to Ben's restaurant to meet him and find out how he became a world-renowned chef, and Ben has a tasty surprise in store.
A timid sperm whale must conquer his fears and dive deep down to help the Octonauts release Peso from a giant clam.
When Shellington gets trapped in the middle of a massive Jellyfish bloom, it's up to the Octonauts to rescue him.
Elsie is an Andy Griffiths superfan. Having read many of his books and finding inspiration within their pages, Elsie has an opportunity to not only meet and interview her hero, but share one of her very own stories.
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 send an SOS message to the other Octonauts.
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 oarfish.
What keeps making strange holes in the Octonauts' equipment? Turns out it's a trio of pesky Cookiecutter Sharks, the mosquitoes of the sea.
The Octonauts must rescue Peso when he gets trapped inside a giant comb jelly.
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