4 - 1Octonauts and the Poison Dart Frogs Sep. 23, 2015- 4 - 2Octonauts and the Hidden Lake Sep. 24, 2015
- 4 - 3Octonauts and the Octopod Mystery Sep. 25, 2015
- 4 - 4Octonauts and the Baby Sea Turtles Sep. 28, 2015
- 4 - 5Octonauts and the Walrus Pups Sep. 29, 2015
- 4 - 6Octonauts and the Mantis Shrimp Sep. 30, 2015
- 4 - 7Octonauts and the Loneliest Whale Oct. 01, 2015
- 4 - 8Octonauts and the Tree Lobsters Oct. 02, 2015
- 4 - 9Octonauts and the Convict Fish Dec. 14, 2015
- 4 - 10Octonauts and the Emperor Penguins Dec. 16, 2015
- 4 - 11Octonauts and the Crawfish Dec. 03, 2016
- 4 - 12Octonauts and the Flamingos Dec. 04, 2016
- 4 - 13Octonauts and the Tiger Shark May. 27, 2017
- 4 - 14Octonauts and the Sunfish May. 28, 2017
- 4 - 15Octonauts and the Coelacanth May. 29, 2017
- 4 - 16Octonauts and the Surfing Snails Sep. 06, 2017
- 4 - 17Octonauts and the Yellow Bellied Sea Snakes Sep. 13, 2017
- 4 - 18Octonauts and the Hippos Sep. 20, 2017
- 4 - 19Octonauts and Operation Cooperation Sep. 27, 2017
- 4 - 20Octonauts and the Bomber Worms Oct. 23, 2017
- 4 - 21Octonauts and the Kelp Monster Mystery Oct. 24, 2017
- 4 - 22Octonauts and the Coconut Crisis Oct. 25, 2017
- 4 - 23Octonauts and the Baby Gator Oct. 26, 2017
- 4 - 24Octonauts and the Spinner Dolphins Oct. 27, 2017
