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Series 5: 1. Blue Fin Tuna
After an encounter with a school of migrating tuna, the Octonauts discover that one of the speedy fish, Tina, has been left behind. And she’s injured! Poor Tina has a hook stuck in her mouth and is too weak to swim. After Peso tends to her wound, the Octonauts agree to help get her to the tuna spawning grounds. But they’ll have to be quick: egg-laying season doesn’t last long. Luckily, Tweak’s latest gup, the Gup-R, is the fastest she’s ever built! The Octonauts use it to tow Tina, but when the Gup-R’s battery dies, how will they catch up to the rest of her school?
Source: CBeebies
Most recent episodes of Octonauts
Octonauts
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While exploring a reef, Shellington and Dashi accidentally trigger a feeding frenzy with multiple sharks biting at anything that moves. As Barnacles and Tweak work frantically t ...
05-12-2025
CBeebies
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The Octonauts follow a trail of deep-sea debris to its source: a derelict ship floating unmanned on the surface. But the ship seems to be haunted by ghostly voices, which a quic ...
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CBeebies
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Series 5: 3. Whales Of Mystery
Shellington is excited to find the distinctive tooth of a very rare creature, the spade-toothed beaked whale. Now, the Octonauts must find the tooth’s owner, so Shellingto ...
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CBeebies
Octonauts
Series 5: 2. Blue Whale Rescue
When Kwazii discovers a blue whale with an injured tail, the Octonauts attempt to use a giant net and Octofloats to keep it from sinking. Meanwhile, Peso and Tweak collaborate o ...
02-12-2025
CBeebies
Most popular episodes of Octonauts
Octonauts
Series 5: 1. Blue Fin Tuna
After an encounter with a school of migrating tuna, the Octonauts discover that one of the speedy fish, Tina, has been left behind. And she’s injured! Poor Tina has a hook ...
01-12-2025
CBeebies
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Animated series. In this special episode, the Octonauts travel deep down the Amazon river in search of a lost city - and Kwazii's long-lost grandfather, Calico Jack!
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Animated deep sea adventures with Captain Barnacles and his explorers. Kwazii finds a mysterious, unbreakable coconut, so the Octonauts seek out help to open it.
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Animated deep sea adventures with Captain Barnacles and his band of explorers. Kwazii's Gup-B breaks down in a storm, but a chain of reef lobsters lends a hand.
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CBeebies