5 Season
143 Episode
Octonauts - Season 3 Episode 18 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!
- Year: 2023
- Country: Ireland, United Kingdom, United States of America
- Genre: Kids, Animation, Action & Adventure
- Studio: CBeebies
- Keyword: submariner, oceans rescue, anthropomorphic animal, animation, discovery kids
- Director: Michael C. Murphy, Vicki Wong
- Cast: