S4 E1: Octonauts and the Poison Dart Frogs

S4 E2: Octonauts and the Hidden Lake

S4 E3: Octonauts and the Octopod Mystery

S4 E4: Octonauts and the Baby Sea Turtles

S4 E5: Octonauts and the Walrus Pups

S4 E6: Octonauts and the Mantis Shrimp

S4 E7: Octonauts and the Loneliest Whale

S4 E8: Octonauts and the Tree Lobsters

S4 E9: Octonauts and the Convict Fish

S4 E10: Octonauts and the Emperor Penguins

S4 E11: Octonauts and the Crawfish

S4 E12: Octonauts and the Flamingos

S4 E13: Octonauts and the Tiger Shark

S4 E14: Octonauts and the Sunfish

S4 E15: Octonauts and the Coelacanth

S4 E16: Octonauts and the Surfing Snails

S4 E17: Octonauts and the Yellow Bellied Sea Snakes

S4 E18: Octonauts and the Hippos

S4 E19: Octonauts and Operation Cooperation

S4 E20: Octonauts and the Bomber Worms

S4 E21: Octonauts and the Kelp Monster Mystery

S4 E22: Octonauts and the Coconut Crisis

S4 E23: Octonauts and the Baby Gator

S4 E24: Octonauts and the Spinner Dolphins