Catch up TV
Series 4: 18. Octonauts and the Hippos
Source: CBeebies
Most recent episodes of Octonauts
Octonauts
Series 1 - The Vampire Squid
Animated deep sea adventures with Captain Barnacles and his explorers. Peso must gather all his courage when he travels deep down to the very bottom of the ocean.
11-01-2026
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.
10-01-2026
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.
10-01-2026
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.
09-01-2026
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.
08-01-2026
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.
07-01-2026
CBeebies
Octonauts
Series 1 - The Speedy Sailfish
Animated deep sea adventures with Captain Barnacles and his explorers. Barnacles and Kwazii use some speedy sailfish to round up all the Gups.
06-01-2026
CBeebies
Octonauts
Series 1 - The Remipedes
Animated deep sea adventures with Captain Barnacles and his explorers. When Shellington gets lost in a dark sea cave, he gets assistance from some blind remipedes.
05-01-2026
CBeebies
Octonauts
Series 1 - The Eel Ordeal
Animated deep-sea adventures with Captain Barnacles and his explorers. The Octonauts travel up a treacherous river to help a young migrating eel.
04-01-2026
CBeebies
Octonauts
Series 1 - The Beluga Whales
Animated deep sea adventures with Captain Barnacles and his explorers. The Octonauts discover a pod of beluga whales stranded at a breathing hole.
04-01-2026
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
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!
29-10-2025
CBeebies
Octonauts
Series 1 - The Great Penguin Race
Animated deep sea adventures with Captain Barnacles and his explorers. The Octonauts cheer Peso on as he goes home to compete in an annual tournament.
29-12-2025
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.
21-12-2025
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 3 - Yeti Crab
Animated deep sea adventures with Captain Barnacles and his explorers. A yeti crab damages the ship, endangering itself and the Octonauts.
24-10-2025
CBeebies
Octonauts
Series 1 - The Narwhal
Animated deep sea adventures with Captain Barnacles and his fellow explorers. While sailing the Arctic, the Octonauts' ship, the Octopod, gets trapped in the ice.
06-12-2025
CBeebies
