Catch up TV
Specials: 3. Great Barrier Reef
The Great Barrier Reef, the world's largest structure of living organisms and 1,400 miles long, is home to the most diverse population of undersea life on the planet… and it's under attack!\n\nIn an epic story torn from the headlines, the Octonauts embark on their largest, most complex rescue mission ever: saving the Great Barrier Reef and all the creatures that live there from an invasion of coral-hungry crown-of-thorns starfish.\n\nThe Octonauts meet a tiny coral polyp looking to find a home on the very same reef where the Octonauts are deploying their new medical base, the Gup-W, and the Gup-P, a specialised first responder emergency vehicle.\n\nTo save the reef and their new polyp friend, the Octonauts must combine forces with a diverse crew of zapping, splatting and claw-snapping reef creatures to fend off the spiky, coral-munching starfish.
Source: CBeebies
Most recent episodes of Octonauts
Octonauts
Series 3 - Harbour Seal
Animated deep-sea adventures with Captain Barnacles and his explorers. When Peso's patient mysteriously disappears, the Octonauts enlist a unique undersea detective.
07-06-2026
CBeebies
Octonauts
Series 3 - Mudskippers
Animated deep-sea adventures with Captain Barnacles and his explorers. The Octonauts attempt to keep the peace amongst a trio of mudskippers.
06-06-2026
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.
05-06-2026
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.
04-06-2026
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.
03-06-2026
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.
02-06-2026
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.
01-06-2026
CBeebies
Octonauts
Series 3 - Sea Skaters
Animated deep sea adventures with Captain Barnacles and his explorers. When Kwazii gets lost at sea aboard the tiny octo-ski, he meets a flotilla of sea skaters.
31-05-2026
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 ...
12-03-2026
CBeebies
Octonauts
Series 1 - The Snapping Shrimp
Animated deep-sea adventures with Captain Barnacles and his explorers. The Octonauts encounter a snapping shrimp.
30-04-2026
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.
21-05-2026
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.
25-04-2026
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.
26-04-2026
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.
23-05-2026
CBeebies
Octonauts
Series 1 - The Electric Torpedo Rays
Animated deep-sea adventures with Captain Barnacles and his explorers. The Octonauts give their ship a jump-start with some electric torpedo rays.
15-03-2026
CBeebies
Octonauts
Series 5: 5. Feeding Frenzy
While exploring a reef, Shellington and Dashi accidentally trigger a feeding frenzy with multiple sharks biting at anything that moves. As Barnacles and Tweak work frantically t ...
08-04-2026
CBeebies