Octonauts: 3x18
The Urchin Invasion
The Octonauts head to the kelp forest to visit Shellington’s sister, Pearl, and her newborn son Periwinkle – only to find the forest endangered by an infestation of kelp-eating urchins!
3 - 1The Siphonophore Sep. 04, 2013
3 - 2The Water Bears Sep. 05, 2013
3 - 3The Cone Snail Sep. 06, 2013
3 - 4The Artificial Reef Sep. 09, 2013
3 - 5The Humpback Whales Sep. 10, 2013
3 - 6The Pelicans Sep. 11, 2013
3 - 7The Sea Pigs Sep. 12, 2013
3 - 8The Yeti Crab Sep. 13, 2013
3 - 9The Barracudas Mar. 10, 2014
3 - 10The Duck-Billed Platypus Mar. 11, 2014
3 - 11The Sea Skaters Mar. 12, 2014
3 - 12The Mudskippers Mar. 13, 2014
3 - 13The Harbour Seal Mar. 14, 2014
3 - 14The Lion's Mane Jellyfish Mar. 17, 2014
3 - 15The Red Rock Crabs Mar. 18, 2014
3 - 16The Sea Sponge Mar. 19, 2014
3 - 17The Immortal Jellyfish Mar. 20, 2014
3 - 18The Urchin Invasion Mar. 21, 2014
3 - 19The Hammerhead Sharks Sep. 21, 2015
3 - 20The Loggerhead Sea Turtle Sep. 22, 2015