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Octonauts S03E18 - The Urchin Invasion

Octonauts
Octonauts
Octonauts (2010)

S03E18 The Urchin Invasion

Mar 21, 2014 Season 3 Episode 18
Octonauts S03E18

Episode Overview

The Octonauts journey to the kelp forest to see Shellington's sister, Pearl, and her new baby, Periwinkle. However, they soon discover that the kelp forest is under threat from a swarm of urchins that are munching away at the kelp!