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The Mariana Trench Adventure
Special episode of the animated deep sea adventure series. Tweak has designed a brand-new Deep Sea Station to study the deepest, darkest reaches of the ocean.
Source: CBeebies
Most recent episodes of Octonauts
Octonauts
Series 3 - Sea Sponge
Animated deep-sea adventures. A sea sponge that houses other sea creatures in its pores suffers from a mysterious illness and Peso must figure out the cause.
19-04-2025
CBeebies
Octonauts
Series 3 - Siphonophore
Animated deep sea adventures with Captain Barnacles and his explorers. Kwazii and Dashi become entangled in a strange deep-sea creature - a siphonophore.
19-04-2025
CBeebies
Octonauts
Series 1 - The Giant Kelp Forest
Animated deep-sea adventures with Captain Barnacles and his explorers. The Octonauts journey into a mysterious kelp forest and meet strange creatures.
18-04-2025
CBeebies
Octonauts
Series 1 - The Albino Humpback Whale
Animated deep-sea adventures with Captain Barnacles and his explorers. The Octonauts help out an albino humpback whale with a nasty sunburn.
17-04-2025
CBeebies
Octonauts
Series 1 - The Lost Sea Star
Animated deep sea adventures with Captain Barnacles and his explorers. The Octonauts find an unusual sea star on the beach.
16-04-2025
CBeebies
Octonauts
Series 1 - The Monster Map
Animated deep-sea adventures with Captain Barnacles and his explorers. The Octonauts follow an old map to what Kwazii believes is treasure guarded by a sea monster.
15-04-2025
CBeebies
Octonauts
Series 1 - The Blobfish Brothers
Animated deep-sea adventures with Captain Barnacles and his explorers. The Octonauts must evacuate sea creatures before an underwater volcano erupts.
14-04-2025
CBeebies
Octonauts
Series 3 - Red Rock Crabs
Animated deep sea adventures. When Shellington and the crew try to gather some skittish crabs who have drifted away from home, they get help from some old friends.
13-04-2025
CBeebies
Octonauts
Octonauts Special: The Amazon Adventure
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!
13-04-2025
CBeebies
Octonauts
Series 2 - Gulper Eels
Animated deep sea adventures with Captain Barnacles and his explorers. Hungry gulper eels as well as undersea tremors threaten Inkling and Kwazii.
13-04-2025
CBeebies
Most popular episodes of Octonauts
Octonauts
The Over, Under Adventure
Animated deep sea adventure series. The Octonauts' mission to explore Antarctica becomes a desperate rescue as a group of sea stars and urchins are threatened by a brinicle.
15-08-2024
CBeebies
Octonauts
Series 1 - The Hungry Pilot Fish
Animated deep-sea adventures with Captain Barnacles and his explorers. A lost pilot fish who eats ocean gunk cleans up the Octonauts' dirty gups.
09-11-2024
CBeebies
Octonauts
Series 1 - The Whale Shark
Animated deep sea adventures with Captain Barnacles and his band of explorers. Dashi is swallowed by a whale shark so the Octonauts venture inside to rescue her.
31-03-2025
CBeebies
Octonauts
Series 1 - The Undersea Storm
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.
01-04-2025
CBeebies
Octonauts
Creature Reports - The Hermit Crab
Captain Barnacles and his intrepid band of explorers, The Octonauts, sing about underwater creatures. The Octonauts share a few fun facts about the hermit crab.
05-09-2014
CBeebies
Octonauts
Series 1 - The Monster Map
Animated deep-sea adventures with Captain Barnacles and his explorers. The Octonauts follow an old map to what Kwazii believes is treasure guarded by a sea monster.
15-04-2025
CBeebies
Octonauts
Series 3 - Siphonophore
Animated deep sea adventures with Captain Barnacles and his explorers. Kwazii and Dashi become entangled in a strange deep-sea creature - a siphonophore.
19-04-2025
CBeebies
Octonauts
Series 1 - The Flying Fish
Animated deep sea adventures with Captain Barnacles and his band of explorers. A school of flying fish accidentally make off with Professor Inkling's rare book.
04-04-2025
CBeebies
Octonauts
Series 3 - Urchin Invasion
Animated deep sea adventures. The Octonauts head to the kelp forest to visit Shellington's sister, Pearl, and her newborn son Periwinkle.
05-08-2024
CBeebies
Octonauts
Series 1 - The Snot Sea Cucumber
Animated deep-sea adventures with Captain Barnacles and his explorers. A slimy, slippery snot sea cucumber gets loose onboard the Octopod.
15-10-2024
CBeebies