Octonauts

The Urchin Invasion

TV-Y
S3 • E18    Mar 20, 2014    11m
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!

Where to Watch The Urchin Invasion

Cast of The Urchin Invasion

  • Keith Wickham
  • Simon Greenall
  • Jo Wyatt
  • Rob Rackstraw

 

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