The BEST episodes of Octonauts
Every episode of Octonauts ever, ranked from best to worst by thousands of votes from fans of the show. The best episodes of Octonauts!
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 - Blue Whale Rescue
Season 5 - Episode 2 - Aired 3/28/2023
When Kwazii discovers a blue whale with an injured tail, the Octonauts attempt to use a giant net and Octofloats to keep it from sinking. Meanwhile, Peso and Tweak collaborate on a special brace for its tail, and Kwazii, Dashi and Shellington try to find it enough food. But when the supporting net breaks, the Octonauts have to launch an emergency free-fall rescue!
Watch Now:Amazon
#2 - Blue Fin Tuna
Season 5 - Episode 1 - Aired 3/27/2023
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 stuck in her mouth and is too weak to swim. After Peso tends to her wound, the Octonauts agree to help get her to the tuna spawning grounds. But they’ll have to be quick: egg-laying season doesn’t last long. Luckily, Tweak’s latest gup, the Gup-R, is the fastest she’s ever built! The Octonauts use it to tow Tina, but when the Gup-R’s battery dies, how will they catch up to the rest of her school?
#3 - Feeding Frenzy
Season 5 - Episode 5 - Aired 3/31/2023
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 to plan a rescue, Shellington and Dashi try not to become shark food!
Watch Now:Amazon
#4 - Whales of Mystery
Season 5 - Episode 3 - Aired 3/29/2023
Shellington is excited to find the distinctive tooth of a very rare creature, the spade-toothed beaked whale. Now, the Octonauts must find the tooth’s owner, so Shellington can study it, and so that Peso can help replace its tooth. But it won’t be easy: spade-toothed beaked whales like to be left alone and can dive very deep.
Watch Now:Amazon
#5 - The Kelp Monster Mystery
Season 4 - Episode 17 - Aired 6/4/2016
Dashi teams up with her little sister, Koshi, to solve a mysterious disappearance in a kelp forest.
#6 - The Dwarf Lantern Shark
Season 1 - Episode 44 - Aired 2/3/2011
Down in the darkness of the ocean deep, Peso and the Octonauts must help a tiny, injured Dwarf Lanternshark. But they have to find him first!
#8 - The Eel Ordeal
Season 1 - Episode 42 - Aired 2/1/2011
The Octonauts travel up a treacherous river to help a young migrating eel on her difficult journey.
#10 - The Dolphin Reef Rescue
Season 1 - Episode 41 - Aired 1/31/2011
When the Octonauts all pitch in to help save a sick coral reef, they get some unexpected help from a pod of playful dolphins.
#12 - The Tiger Shark
Season 4 - Episode 21 - Aired 6/8/2016
The young Tiger Star is hungry and willing to eat anything or anyone.
#13 - Ghost Ship
Season 5 - Episode 4 - Aired 3/30/2023
The Octonauts follow a trail of deep-sea debris to its source: a derelict ship floating unmanned on the surface. But the ship seems to be haunted by ghostly voices, which a quick dip below the water line reveals to be hundreds of barnacles stuck to the ship. As the ship drifts into waters too cold for the barnacles, the Octonauts must find a way to tow it to warmer waters before it sinks or falls apart.
Watch Now:Amazon
#14 - The Arctic Orcas
Season 1 - Episode 37 - Aired 1/25/2011
When Captain Barnacles and Peso get lost in the icy Arctic sea, a pod of Orcas help the Octonauts find them.
#17 - The Jellyfish Bloom
Season 1 - Episode 34 - Aired 12/16/2010
When Shellington gets trapped in the middle of a massive Jellyfish bloom, it's up to the Octonauts to rescue him.
#20 - The Kelp Forest Rescue
Season 1 - Episode 24 - Aired 11/4/2010
When Peso's little brother, Pinto, comes to visit, he's more interested in being a pirate than a medic – at least until he accompanies Peso on a mission to rescue Dashi and Shellington in a kelp forest.
#21 - The Baby Gator
Season 4 - Episode 11 - Aired 3/14/2016
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 Giant Kelp Forest
Season 1 - Episode 15 - Aired 10/22/2010
When Kwazii's favorite sub, the Gup B, goes missing, the Octonauts journey into a mysterious kelp forest to find it, meeting strange and interesting creatures along the way.
#24 - The Oarfish
Season 1 - Episode 32 - Aired 12/14/2010
Dashi snaps a picture of what appears to be a sea serpent, but the truth is stranger than fiction when it turns out to be an awesomely long Oarfish.
#25 - The Snot Sea Cucumber
Season 1 - Episode 20 - Aired 10/29/2010
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!