The Octonauts and the Urchin Invasion
- Episode aired May 2, 2014
- TV-Y
- 23m
![The Octonauts (2010)](https://m.media-amazon.com/images/M/MV5BNzY2M2E0N2MtZWI1Ni00YWYyLWFhOWQtYmMxZWE4NTc2YjUwXkEyXkFqcGdeQXVyNDE5Nzg5NDY@._V1_QL75_UY281_CR5,0,190,281_.jpg)
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-eat... Read allUrchin 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! Lionsmane Jelly: A lionsmane jellyfish gets its long and stingy tentacles tan... Read allUrchin 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! Lionsmane Jelly: A lionsmane jellyfish gets its long and stingy tentacles tangled in the bubble engine, unintentionally flooding the Octopod and causing havoc.