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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 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.
23-02-2026
CBeebies
Octonauts
Series 2 - Bowhead Whales
Animated deep sea adventures with Captain Barnacles and his explorers. The Octonauts attempt to rescue a group of narwhals trapped behind Arctic ice.
22-02-2026
CBeebies
Octonauts
Series 1 - The Sardine School
Animated deep-sea adventures with Captain Barnacles and his explorers. The Octonauts must work together as a team to help a lost sardine find her school.
22-02-2026
CBeebies
Octonauts
Series 2 - Sea Snakes
Animated deep sea adventures with Captain Barnacles and his explorers. A poisonous sea krait lays her eggs in the garden pod.
21-02-2026
CBeebies
Octonauts
Series 1 - The Enormous Elephant Seal
Animated deep-sea adventures with Captain Barnacles and his explorers. Peso and the Octonauts help an enormous elephant seal.
21-02-2026
CBeebies
Octonauts
Series 2 - Mimic Octopus
Animated deep sea adventures with Captain Barnacles and his explorers. The Octonauts recruit a shape-shifting mimic octopus to help them on a mission.
20-02-2026
CBeebies
Octonauts
Series 2 - Triggerfish
Animated deep sea adventures with Captain Barnacles and his explorers. When he is carried away by a cyclonic waterspout, Kwazii finds himself stranded.
19-02-2026
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.
10-02-2026
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
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.
12-01-2026
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
