The WORST Episodes of Octonauts
Every episode ever - ranked by fan votes!
Last Updated: Sep 7, 2021
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 - Octonauts and the Scaly-Foot Snail
Season 5 - Episode 26 - Aired Dec 4, 2018
While out exploring the deep sea hydrothermal vents, Shellington encounters a mysterious creature - a scaly-foot snail.
#2 - The Swashbuckling Swordfish
Season 2 - Episode 14 - Aired Mar 14, 2013
The octonauts discover a rare showing of a full moon as Kwazii discovers that its known as the Pirate Moon as Kwazii and The Octonauts search for a ship that belonged to the pirate king as Kwazii searches for the sword of the Pirate King until a trio of swordfish prevent Kwazii from getting closer to the wrecked ship. (Episode also known as "The Flying Swords" for USA screenings.)
#3 - The Loneliest Whale
Season 4 - Episode 7 - Aired Oct 1, 2015
The Octonauts follow a strange song to a lonely humpback whale.
#4 - The Yellow-Bellied Sea Snakes
Season 4 - Episode 18 - Aired Jun 5, 2016
When a mass of poisonous sea snakes get stranded on a beach, Peso and the Octonauts must somehow get them all back into the ocean.
#5 - The Mimic Octopus
Season 2 - Episode 16 - Aired May 13, 2013
The Octonauts recruit a shape-shifting mimic octopus to help them recover an important vial of medicinal algae from a moray eel's lair.
#6 - The Bomber Worms
Season 4 - Episode 12 - Aired Mar 14, 2016
While diving down to the Midnight Zone, the Octonauts are attacked by bomber worms, and are enlisted to rescue an injured member of their troop.
#7 - The Beluga Whales
Season 1 - Episode 26 - Aired Dec 6, 2010
The Octonauts lead a pod of Beluga Whales stuck under the pack ice to safety by getting them to follow Peso while he's playing the same tune as the Beluga's song on his xylophone.
#8 - The Electric Torpedo Rays
Season 1 - Episode 46 - Aired Feb 7, 2011
When the Octopod loses all power, the Octonauts give it a jumpstart with the aid of some Electric Torpedo Rays!
#9 - The Sardine School
Season 1 - Episode 40 - Aired Jan 28, 2011
The Octonauts must work together as a team to help a lost sardine find her school.
#10 - The Enormous Elephant Seal
Season 1 - Episode 39 - Aired Jan 27, 2011
When Peso and the Octonauts aid an enormous Elephant Seal, he overstays his welcome in the Octopod.
#11 - The Humuhumunukunukuapua'a
Season 1 - Episode 49 - Aired Feb 10, 2011
When the Octopod's waterworks are flooded with frightened Humuhumu fish, the Octonauts have to find a way to flush them out.
#12 - The Flying Fish
Season 1 - Episode 5 - Aired Oct 8, 2010
When a school of flying fish accidentally make off with a rare book belonging to Professor Inkling, the Octonauts rig up the Gup B to fly after them and get it back.
#13 - The Coconut Crisis
Season 4 - Episode 19 - Aired Jun 6, 2016
Kwazii and the Octonauts help their friends the coconut crabs discover who is stealing their coconuts.
#14 - The Scary Spookfish
Season 1 - Episode 36 - Aired Jan 24, 2011
The Octonauts try to pull Peso out of an oceanic trench and get some help from a strange looking creature with a see through head: a Spookfish.
#15 - The Crafty Cuttlefish
Season 1 - Episode 47 - Aired Feb 8, 2011
Captain Barnacles' compass has been taken by a crafty, shape shifting Cuttlefish
#16 - The Great White Shark
Season 2 - Episode 4 - Aired Nov 22, 2012
Peso must perform an emergency fin bandage on a hungry great white shark, but first they need to subdue the giant predator using a trick called 'tonic immobility'.
#17 - The Mantis Shrimp
Season 4 - Episode 6 - Aired Sep 30, 2015
The Octonauts must get 2 mantis shrimp to stop fighting before their powerful claw strikes destroy the Octopod.
#18 - The Decorator Crab
Season 1 - Episode 25 - Aired Nov 5, 2010
When important objects go missing from their ship, the Octonauts stake out the thief, who turns out to be a decorator crab stealing their things to decorate his shell.
#19 - The Midnight Zone
Season 1 - Episode 18 - Aired Oct 27, 2010
While exploring the deepest part of the ocean, the Midnight Zone, the Octonauts discover a strange rock that happens to be home to a new species of worm.
#20 - The Barracudas
Season 3 - Episode 9 - Aired Mar 10, 2014
Shellington and the Vegimals' mission to replant a mangrove forest is put in peril by a school of toothy barracudas.
#21 - The Sea Sponge
Season 3 - Episode 16 - Aired Mar 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.
#22 - The Adelie Penguins
Season 2 - Episode 2 - Aired Nov 20, 2012
While Kwazii and Peso have their hands full babysitting a bunch of Adelie penguin chicks, Captain Barnacles must rescue the chicks' parents from a perilous sea storm!
#23 - The Great Algae Escape
Season 1 - Episode 8 - Aired Oct 13, 2010
Captain Barnacles and his crew must catch a runaway Octopod, when it is hijacked by a group of crustaceans trying to escape their algae-infested waters.
#24 - The Hermit Crabs
Season 1 - Episode 22 - Aired Nov 2, 2010
When Captain Barnacles Bear and most of the crew are unable to return to base, it's up to Peso and Tweak to remove a stuck hermit crab from its shell.
#25 - The Seahorse Tale
Season 1 - Episode 29 - Aired Dec 9, 2010
After a storm, the Octonauts have to reunite a seahorse with its missing mate - who is about to give birth to baby seahorses!