The BEST episodes of Octonauts season 3
Every episode of Octonauts season 3, ranked from best to worst by thousands of votes from fans of the show. The best episodes of Octonauts season 3!
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 Sea Pigs
Season 3 - Episode 7 - Aired 9/12/2013
The Octonauts must stop a huge herd of sea pigs before they march blindly into the Mariana Trench - the deepest point on earth!
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#2 - The Waterbears
Season 3 - Episode 2 - Aired 9/5/2013
The gang ventures into a red-hot lava tube to rescue a tiny water bear that does not seem to mind the heat at all.
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#3 - The Cone Snail
Season 3 - Episode 3 - Aired 9/6/2013
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.
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#4 - Loggerhead Sea Turtle
Season 3 - Episode 20 - Aired 9/22/2015
Barnacles seeks guidance from a mysterious sea turtle.
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#5 - The Urchin Invasion
Season 3 - Episode 18 - Aired 3/21/2014
The Octonauts head to the kelp forest to visit Shellington's sister, Pearl, and her newborn son Periwinkle - only to find the forest endangered by an infestation of kelp-eating urchins!
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#6 - The Yeti Crab
Season 3 - Episode 8 - Aired 9/13/2013
As Tweak tests the Gup-X deep down in the Midnight Zone, a yeti crab damages the ship, endangering itself and the Octonauts.
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#7 - The Siphonophore
Season 3 - Episode 1 - Aired 9/4/2013
Kwazii and Dashi become entangled in a strange deep-sea creature - a siphonophore.
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#8 - The Artificial Reef
Season 3 - Episode 4 - Aired 9/9/2013
When an underwater storm destroys a small reef, Tweak and her crew try to convert the Gup-F into an artificial equivalent.
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#9 - The Pelicans
Season 3 - Episode 6 - Aired 9/11/2013
When a floating garbage patch endangers a flock of pelicans and other sea creatures, the Octonauts and the birds work together to clean it up.
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#10 - The Humpback Whales
Season 3 - Episode 5 - Aired 9/10/2013
When a sardine swallows the key to a treasure chest, a humpback whale helps Kwazii track it down.
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#11 - The Duck-Billed Platypus
Season 3 - Episode 10 - Aired 3/11/2014
While rescuing river creatures after a storm, the Octonauts find a strange egg and come under attack by stinging platypuses.
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#12 - The Red Rock Crabs
Season 3 - Episode 15 - Aired 3/18/2014
When Shellington and the crew try to gather some skittish crabs who have drifted away from home, they get help from some old friends.
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#13 - Hammerhead Sharks
Season 3 - Episode 19 - Aired 9/21/2015
The Octonauts study a group of baby hammerhead sharks as they hunt.
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#14 - The Sea Skaters
Season 3 - Episode 11 - Aired 3/12/2014
When Kwazii gets lost at sea aboard the tiny octo-ski, he meets a flotilla of even tinier sea skaters - the only insects who live on the ocean.
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#15 - The Harbor Seal
Season 3 - Episode 13 - Aired 3/14/2014
When Peso's patient, a remora fish, mysteriously disappears, the Octonauts enlist a unique undersea detective - a harbour seal.
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#16 - The Mudskippers
Season 3 - Episode 12 - Aired 3/13/2014
The Octonauts attempt to keep the peace amongst a trio of mudskippers whose home has been flooded.
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#17 - The Lion's Mane Jellyfish
Season 3 - Episode 14 - Aired 3/17/2014
A lion's mane jellyfish gets its long and stingy tentacles tangled in the bubble engine, unintentionally flooding the Octopod and causing havoc.
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#18 - The Sea Sponge
Season 3 - Episode 16 - Aired 3/19/2014
A sea sponge that houses other sea creatures in its pores suffers from a mysterious illness and Peso must figure out the cause.
#19 - The Immortal Jellyfish
Season 3 - Episode 17 - Aired 3/20/2014
Shellington and the Octonauts try to track an unusual creature: a jellyfish that can transform from old to young repeatedly - and live forever!
#20 - The Barracudas
Season 3 - Episode 9 - Aired 3/10/2014
Shellington and the Vegimals' mission to replant a mangrove forest is put in peril by a school of toothy barracudas.