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Series 1 - The Walrus Chief
Animated deep sea adventures with Captain Barnacles and his band of explorers. When Peso's precious medical kit is taken, Barnacles and Kwazii try to get it back.
Source: CBeebies
Most recent episodes of Octonauts
Octonauts
Series 3 - Humpback Whales
Animated deep-sea adventures with Captain Barnacles and his explorers. When a sardine swallows an important key, a humpback whale helps Kwazii track it down.
09-03-2026
CBeebies
Octonauts
Series 2 - Sperm Whale
Animated deep sea adventures with Captain Barnacles and his explorers. A timid sperm whale must conquer his fears to help the Octonauts release Peso from a giant clam.
08-03-2026
CBeebies
Octonauts
Series 1 - The Dwarf Lanternshark
Animated deep-sea adventures with Captain Barnacles and his explorers. Down in the ocean deep, the Octonauts must help a tiny, injured dwarf lanternshark.
08-03-2026
CBeebies
Octonauts
Series 2 - Damselfish
Animated deep sea adventures with Captain Barnacles and his explorers. The Octonauts help a group of algae-eating fish stand up to some aggressive damselfish.
07-03-2026
CBeebies
Octonauts
Series 1 - The Marine Iguanas
Animated deep-sea adventures with Captain Barnacles and his explorers. The Octonauts prepare for their annual seaweed feast near the Galapagos Islands.
07-03-2026
CBeebies
Octonauts
Series 3 - Artificial Reef
Animated deep sea adventures with Captain Barnacles and his explorers. Tweak and her crewmates must convert the Gup-F into an artificial reef.
06-03-2026
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.
05-03-2026
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 ...
16-12-2025
CBeebies
Octonauts
Series 2 - Porcupine Puffer
Animated deep sea adventures with Captain Barnacles and his explorers. Barnacles, Kwazii and Peso venture inside a whale shark to retrieve a porcupine puffer fish.
01-03-2026
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.
03-03-2026
CBeebies
Octonauts
Series 1 - The Scary Spookfish
Animated deep sea adventures with Captain Barnacles and his explorers. The Octonauts meet a strange-looking creature with a see-through head: a spookfish.
08-02-2026
CBeebies
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 Hermit Crabs
Animated deep sea adventures. When the crew can't return to base, Peso and Tweak have to help a hermit crab escape from its shell.
22-01-2026
CBeebies