The Octonauts stake out a thief, who turns out to be a decorator crab, stealing their things to decorate his shell. Most have appeared in the episodes and specials of the series, and at least 5 have appeared in the two movies ( The Underwater Caves of Sac Actun , Octonauts and the Great Barrier Reef and the The Octonauts Movie: The Ring of Fire.

Animals are also featured smaller animals fit in scale with the characters however larger animals like whales and Narwhals are much smaller. A video of it made by Dashi reveals that the sound and accompanying shock wave are caused by the shrimp while she was making a cavitation bubble with her claw. While looking for the island they meet a parrotfish, who helps them clear away dense algae and hide from vicious moray eels. The Octonauts venture into a dangerous red-hot lava tube to rescue a teeny tiny water bear, who doesn't mind the heat at all. His incomplete map had led him in circles, but Kwazii's piece completes it so they can finish the quest.But he and the Octonauts must catch a baby tree lobster that ended up in the Octopod and bring him back to Balls Pyramid. He becomes more interested in being a pirate than a medic (stating that he wanted to be a 'real' Octonaut like Kwazii).

GPU-Z is a lightweight system utility designed to provide vital information about your video card and graphics processor.Hungry gulper eel brothers as well as undersea tremors threaten Inkling and Kwazii and get trapped by boulders. The Octonauts race against time to rescue Tweak's friend, a leatherback sea turtle named Sandy when she is swept away in a current (leading to a whirlpool) from the Australian coast where she was preparing to lay her eggs.

After the Octopod breaks down, Tweak knows that the only way to get the new part that she needs is to take a trip to the old Octopod. But when he helps Barnacles, Kwazii, and Peso in a mission to help Dashi and Shellington escape, he begins to like being a medic. When a hungry tiger shark whose name is Tom eats the camera that Tweak's leatherback sea turtle friend Sandy gets in the Octopod, she and the Octonauts must rescue her before he eats everything in his path. When Peso gets stranded on a beach with a mass of poisonous snakes after a terrible storm, one of the yellow-bellied snakes has a splinter of driftwood stuck in her scales, and Peso has a broken flipper (According to the UK version, meanwhile the US Version indicates that he got stung). Some electric torpedo rays give the Octopod a jump-start when its batteries go flat during a trip to see Tweak's pal, Sandy the leatherback sea turtle.Theory has been set to it's appeared in The Octonauts Movie: The Underwater Caves of Sac Actun, but it's probably not as toy has been made for the speeder that is said to be the Gup-J, and the toy that has been made is in fact not the Gup-J toy. The Octonauts journey across a dangerous expanse of ice to help a penguin mother get back to her family, but they lose contact along the way.