The BEST episodes of Octonauts season 4
Every episode of Octonauts season 4, ranked from best to worst by thousands of votes from fans of the show. The best episodes of Octonauts season 4!
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 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.
#2 - The Sunfish
Season 4 - Episode 24 - Aired 6/14/2016
The Octonauts must help a giant sunfish who can't swim straight, before it hurts other sea creatures and itself.
#3 - The Tiger Shark
Season 4 - Episode 21 - Aired 6/8/2016
The young Tiger Star is hungry and willing to eat anything or anyone.
#4 - Operation Cooperation
Season 4 - Episode 16 - Aired 4/4/2016
After Shellington crashes the Gup-D, he and Kwazii team up with a moray eel and grouper fish to pick up the pieces.
Watch Now:Amazon
#5 - 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.
#6 - The Hidden Lake
Season 4 - Episode 2 - Aired 9/24/2015
The Octonauts are exploring Antarctica, when Shellington discovers strange microscopic creatures living under the ice.
Watch Now:Amazon
#7 - The Poison Dart Frogs
Season 4 - Episode 1 - Aired 9/23/2015
When a giant wave hurls Amazon River creatures up into the trees, the Octonauts must get them down safely, without disturbing poison dart frogs who live there.
#8 - The Emperor Penguins
Season 4 - Episode 10 - Aired 12/16/2015
The Octonauts journey across a dangerous expanse of ice to help a penguin mother get back to her family.
Watch Now:Amazon
#9 - The Baby Sea Turtles
Season 4 - Episode 4 - Aired 9/28/2015
As newborn baby sea turtles make their way to the ocean, the Octonauts must steer them clear a giant wave and hungry predators.
Watch Now:Amazon
#10 - The Octopod Mystery
Season 4 - Episode 3 - Aired 9/25/2015
When the Octopod breaks down, Tweak and the crew search for a missing part aboard an abandoned prototype of the ship, not realising something lives there.
#11 - The Crawfish
Season 4 - Episode 13 - Aired 3/22/2016
When a population of crawfish is stricken by illness, the Octonauts race to find a cure.
#12 - The Hippos
Season 4 - Episode 22 - Aired 6/9/2016
Returning home from Africa, the Octonauts encounter a gang of large, territorial hippos.
Watch Now:Amazon
#13 - The Convict Fish
Season 4 - Episode 9 - Aired 12/14/2015
The Octonauts evacuate the creatures living around a reef before a large archway collapses, but one stubborn convict fish refuses to move from her burrow.
Watch Now:Amazon
#14 - The Flamingos
Season 4 - Episode 15 - Aired 4/4/2016
The Octonauts wade through a swamp to find a lost flamingo chick before hungry predators do!
#15 - The Tree Lobsters
Season 4 - Episode 8 - Aired 10/2/2015
When a storm washes Peso onto a mysterious, rocky island, he meets a band of lobster-like insects thought to be extinct.
#16 - The Mantis Shrimp
Season 4 - Episode 6 - Aired 9/30/2015
The Octonauts must get 2 mantis shrimp to stop fighting before their powerful claw strikes destroy the Octopod.
#17 - The Loneliest Whale
Season 4 - Episode 7 - Aired 10/1/2015
The Octonauts follow a strange song to a lonely humpback whale.
#18 - The Coconut Crisis
Season 4 - Episode 19 - Aired 6/6/2016
Kwazii and the Octonauts help their friends the coconut crabs discover who is stealing their coconuts.
#19 - The Walrus Pups
Season 4 - Episode 5 - Aired 9/29/2015
Captain Barnacles and his niece and nephew, Ursa and Orson, must rescue walrus pups who are stranded on a runaway ice floe, before it collides with a huge iceberg!
#20 - The Surfing Snails
Season 4 - Episode 14 - Aired 3/22/2016
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!
#21 - The Coelacanth
Season 4 - Episode 20 - Aired 6/7/2016
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.
#22 - The Bomber Worms
Season 4 - Episode 12 - Aired 3/14/2016
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.
#23 - The Spinner Dolphins
Season 4 - Episode 23 - Aired 6/13/2016
The Octonauts struggle to save a pod of spinner dolphins who seem to be swimming in their sleep.
#24 - The Yellow-Bellied Sea Snakes
Season 4 - Episode 18 - Aired 6/5/2016
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.