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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 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.
08-07-2025
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.
07-07-2025
CBeebies
Octonauts
Series 2 - Saltwater Crocodile
Animated deep sea adventures with Captain Barnacles and his explorers. The Octonauts must figure out how to get a gigantic saltwater crocodile back home.
04-07-2025
CBeebies
Octonauts
Series 2 - Manatees
Animated deep sea adventures with Captain Barnacles and his explorers. Running out of air, Barnacles struggles to free his paw from the mouth of a giant clam.
03-07-2025
CBeebies
Octonauts
Series 2 - Leafy Sea Dragons
Animated deep-sea adventures with Captain Barnacles and his explorers. Two young leafy sea dragons are accidentally brought onboard the Octopod.
02-07-2025
CBeebies
Octonauts
Series 2 - Lionfish
Animated deep sea adventures with Captain Barnacles and his explorers. The Octonauts get more than they bargained for with a pair of invasive lionfish.
01-07-2025
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 Snot Sea Cucumber
Animated deep-sea adventures with Captain Barnacles and his explorers. A slimy, slippery snot sea cucumber gets loose onboard the Octopod.
25-04-2025
CBeebies
Octonauts
Creature Reports - The Snot Sea Cucumber
The Octonauts sing about underwater creatures. The Octonauts share a few fun facts about the snot sea cucumber.
02-07-2014
CBeebies
Octonauts
Series 1 - The Orcas
Animated deep sea adventures with Captain Barnacles and his band of explorers. An orca whale is stranded on a beach. The Octonauts come to the rescue.
08-04-2025
CBeebies
Octonauts
Series 3 - Cone Snails
Animated deep sea adventures with Captain Barnacles and his explorers. Only Peso can save the day when a cone snail invades the Octopod.
26-04-2025
CBeebies
Octonauts
Series 1 - The Arctic Orcas
Animated deep sea adventures with Captain Barnacles and his explorers. When Captain Barnacles and Peso get lost in the Arctic sea, a pod of orcas help find them.
20-05-2025
CBeebies