The BEST Episodes of Octonauts
Every episode ever - ranked by fan votes!
Last Updated: Dec 3, 2019
Animated deep sea adventure series. Captain Barnacles and his intrepid band of explorers roam the oceans in search of adventure and fun. Whether it's a perilous voyage to the bottom of the sea or the piratey pursuit of a giant squid, the Octonauts leap into action and always prove that eight heads are better than one.
#1 - The Coelacanth
Season 4 - Episode 20
While exploring a dark and spooky cave, the Octonauts discover the fossil of a powerful, prehistoric fish... but it may be more than just a fossil.
#2 - The Octonauts and the Chinese Giant Salamander
Season 5 - Episode 1
The Octonauts head to the Yangtze River to help Min the Mapmaker, an old friend of Inkling's, who's been trapped by a mysterious creature. Turns out, It was just a Chinese giant salamander protecting it's precious eggs, which have fallen ill due to rising water temperatures.
#3 - Octonauts and the Scaly-Foot Snail
Season 5 - Episode 2
While out exploring the deep sea hydrothermal vents, Shellington encounters a mysterious creature - a scaly-foot snail.
#4 - The Surfing Snails
Season 4 - Episode 14
When surfing snails are swept out to sea by a huge wave, it's up to Dashi and the Octonauts to save them before their bubble rafts pop!
#5 - The Kelp Monster Mystery
Season 4 - Episode 17
Dashi teams up with her little sister, Koshi, to solve a mysterious disappearance in a kelp forest.
#6 - The Loggerhead Sea Turtle
Season 3 - Episode 20
When an underwater tremor separates the Gup-X and its crew, Barnacles seeks guidance from a mysterious sea turtle.
#7 - Operation Cooperation
Season 4 - Episode 16
After Shellington crashes the Gup-D, he and Kwazii team up with a moray eel and grouper fish to pick up the pieces.
#8 - The Great Penguin Race
Season 1 - Episode 51
Animated deep sea adventure series. Captain Barnacles and his intrepid band of explorers roam the oceans in search of adventure and fun. The Octonauts cheer Peso on as he goes home to compete against an awesomely athletic penguin in an annual tournament - the Iron Clam Competition.
#9 - The Sea Pigs
Season 3 - Episode 7
The Octonauts must stop a huge herd of sea pigs before they march blindly into the Mariana Trench - the deepest point on earth!
#10 - The Cone Snail
Season 3 - Episode 3
Peso sets out to save the day when a cone snail invades the octopod and picks off the crew one by one with its dangerous harpoons.
#11 - The Narwhal
Season 1 - Episode 17
While exploring the Arctic, the Octopod gets trapped in the ice. Only Barnacles's skillful navigation, and the help of a friendly Narwhal, can get them free.
#12 - The Yeti Crab
Season 3 - Episode 8
As Tweak tests the Gup-X deep down in the Midnight Zone, a yeti crab damages the ship, endangering itself and the Octonauts.
#13 - The Eel Ordeal
Season 1 - Episode 42
The Octonauts travel up a treacherous river to help a young migrating eel on her difficult journey.
#14 - The Colossal Squid
Season 2 - Episode 1
The Octopod is attacked by a colossal squid, who drags the ship down an abyssal trench, forcing Barnacles and Kwazii to make a perilous swim outside to confront the gigantic beast.
#15 - The Enemy Anemones
Season 1 - Episode 16
The Octonauts and some helpless crabs are caught between two territorial groups of aggregating anemones - and their numbers are growing!
#16 - The Snot Sea Cucumber
Season 1 - Episode 20
When a slimy, slippery snot sea cucumber gets loose on the Octopod, Captain Barnacles Bear decides the only way to save it is to flood the ship!
#17 - The Giant Whirlpool
Season 1 - Episode 21
The Octonauts race against time to rescue Tweak's pal, a leatherback sea turtle who's caught in a fast-moving ocean current that's sucking it into a whirlpool.
#18 - The Arctic Orcas
Season 1 - Episode 37
When Captain Barnacles and Peso get lost in the icy Arctic sea, a pod of Orcas help the Octonauts find them.
#19 - The Sardine School
Season 1 - Episode 40
The Octonauts must work together as a team to help a lost sardine find her school.
#20 - The Hidden Lake
Season 4 - Episode 2
The Octonauts are exploring Antarctica, when Shellington discovers strange microscopic creatures living under the ice.
#21 - The Baby Gator
Season 4 - Episode 11
Kwazii adopts a baby alligator, but when it escapes the Octopod, he must rescue the tiny creature from ocean currents and hungry predators.
#22 - The Flamingos
Season 4 - Episode 15
The Octonauts wade through a swamp to find a lost flamingo chick before hungry predators do!
#23 - The Hippos
Season 4 - Episode 22
Returning home from Africa, the Octonauts encounter a gang of large, territorial hippos.
#24 - The Sunfish
Season 4 - Episode 24
Join Captain Barnacles and his intrepid band of explorers, The Octonauts, for more deep sea adventures. The Octonauts roam the oceans in search of adventure and fun. Whether it's a perilous voyage to the bottom of the sea or the piratey pursuit of a giant squid, the Octonauts leap into action and always prove that eight heads are better than one. The Octonauts must help a giant sunfish who can't swim straight, before it hurts other sea creatures and itself.
#25 - The Tiger Shark
Season 4 - Episode 21
The young Tiger Star is hungry and willing to eat anything or anyone.