Octonauts: Season 4

Episode 1: Octonauts and the Poison Dart Frogs 2015-09-23 | 11 min 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. Episode 2: Octonauts and the Hidden Lake 2015-09-24 | 11 min The Octonauts are exploring Antarctica, when Shellington discovers strange microscopic creatures living under the ice. Episode 3: Octonauts and the Octopod Mystery 2015-09-25 | 11 min 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. Episode 4: Octonauts and the Baby Sea Turtles 2015-09-28 | 11 min As newborn baby sea turtles make their way to the ocean, the Octonauts must steer them clear a giant wave and hungry predators. Episode 5: Octonauts and the Walrus Pups 2015-09-29 | 11 min 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! Episode 6: Octonauts and the Mantis Shrimp 2015-09-30 | 11 min The Octonauts must get 2 mantis shrimp to stop fighting before their powerful claw strikes destroy the Octopod. Episode 7: Octonauts and the Loneliest Whale 2015-10-01 | 11 min The Octonauts follow a strange song to a lonely humpback whale. Episode 8: Octonauts and the Tree Lobsters 2015-10-02 | 11 min When a storm washes Peso onto a mysterious, rocky island, he meets a band of lobster-like insects thought to be extinct. Episode 9: Octonauts and the Convict Fish 2015-12-14 | 11 min 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. Episode 10: Octonauts and the Emperor Penguins 2015-12-16 | 11 min The Octonauts journey across a dangerous expanse of ice to help a penguin mother get back to her family. Episode 11: Octonauts and the Crawfish 2016-12-03 | 11 min When a population of crawfish is stricken by illness, the Octonauts race to find a cure. Episode 12: Octonauts and the Flamingos 2016-12-04 | 11 min The Octonauts find a lost flamingo chick separated from his family and they have to return him there before hungry alligators do! Episode 13: Octonauts and the Tiger Shark 2017-05-27 | 11 min When a hungry tiger shark eats the camera that Tweak's turtle friend Sandy gets in the Octopod, she and the Octonauts must rescue her before it eats everything in its path. Episode 14: Octonauts and the Sunfish 2017-05-28 | 11 min When a huge sunfish enters the GUP-E, Peso and Kwazii must somehow get the large fish out of the Gup. Eventually they find out it's a Sunfish a fish with no fins. Episode 15: Octonauts and the Coelacanth 2017-05-29 | 11 min While exploring a dark and spooky cave, The Octonauts find a strange fossil of a powerful prehistoric fish... but it may be more than just a fossil! Episode 16: Octonauts and the Surfing Snails 2017-09-06 | 11 min When surfing snails are swept out to sea, it's up to Dashi and the Octonauts to save them. Episode 17: Octonauts and the Yellow Bellied Sea Snakes 2017-09-13 | 11 min When Peso gets stranded on a beach with a mass of poisonous snakes after a terrible storm, he and the Octonauts must somehow get them back to the ocean. Episode 18: Octonauts and the Hippos 2017-09-20 | 11 min Trying to return home from a mission along an African river, the Octonauts have trouble getting past a gang of large, mud-splatting, territorial hippos. Episode 19: Octonauts and Operation Cooperation 2017-09-27 | 11 min After Shellington crashes the GUP-D for the 3rd time, he and Kwazii team up with moray eels and grouper fish to help pick up the pieces and fix the vehicle before daylight occurs. Episode 20: Octonauts and the Bomber Worms 2017-10-23 | 11 min While diving down to the Midnight Zone, the Octonauts are attacked by bomber worms. Episode 21: Octonauts and the Kelp Monster Mystery 2017-10-24 | 11 min Dashi teams up with her little sister Koshi to help the Octonauts solve a mysterious disappearance in the Kelp Forest. This is the second episode in which is unknown who sounded the Octo-Alert. Episode 22: Octonauts and the Coconut Crisis 2017-10-25 | 11 min Kwazii takes a vacation on Coconut Island where he gets hit by some coconuts. Then he and the Octonauts must help their old friends the Coconut Crabs discover who's stealing all their coconuts. Episode 23: Octonauts and the Baby Gator 2017-10-26 | 11 min Kwazii adopts a baby alligator naming him Nipper, but when it escapes the Octopod, he and the Octonauts must rescue him. Episode 24: Octonauts and the Spinner Dolphins 2017-10-27 | 11 min The Octonauts struggle to save a pod of spinner dolphins who seem to be just swimming in their sleep.