Octonauts — Season 3, episode 18 watch online

Episodes — Season 3

1. 1 Episode 1 «The Siphonophore» September 4, 2013
2. 2 Episode 2 «The Waterbears» September 5, 2013
3. 3 Episode 3 «The Cone Snail» September 6, 2013
4. 4 Episode 4 «The Artificial Reef» September 9, 2013
5. 5 Episode 5 «The Humpback Whales» September 10, 2013
6. 6 Episode 6 «The Pelicans» September 11, 2013
7. 7 Episode 7 «The Sea Pigs» September 12, 2013
8. 8 Episode 8 «The Yeti Crab» September 13, 2013
9. 9 Episode 9 «The Barracudas» March 10, 2014
10. 10 Episode 10 «The Duck-Billed Platypus» March 11, 2014
11. 11 Episode 11 «The Sea Skaters» October 7, 2013
12. 12 Episode 12 «The Mudskippers» March 13, 2014
13. 13 Episode 13 «The Harbour Seal» March 14, 2014
14. 14 Episode 14 «The Lion's Mane Jellyfish» March 17, 2014
15. 15 Episode 15 «The Red Rock Crabs» March 18, 2014
16. 16 Episode 16 «The Sea Sponge» March 19, 2014
17. 17 Episode 17 «The Immortal Jellyfish» March 20, 2014
18. 18 Episode 18 «The Urchin Invasion» March 21, 2014
19. 19 Episode 19 «The Hammerhead Sharks» June 29, 2014
20. 20 Episode 20 «The Loggerhead Sea Turtle» October 8, 2013