Octonauts
The Urchin Invasion (S03E18)
The Octonauts journey to the kelp forest to see Shellington's sister, Pearl, and her new baby, Periwinkle. However, they soon discover that the kel...
S03E18
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Season 3 Episodes
S03E02 - The Water Bears
Octonauts
S03E03 - The Cone Snail
Octonauts
S03E04 - The Artificial Reef
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S03E05 - The Humpback Whales
Octonauts
S03E06 - The Pelicans
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S03E07 - The Sea Pigs
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S03E08 - The Yeti Crab
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S03E09 - The Barracudas
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S03E10 - The Duck-Billed Platypus
Octonauts
S03E11 - The Sea Skaters
Octonauts
S03E12 - The Mudskippers
Octonauts
S03E13 - The Harbour Seal
Octonauts
S03E14 - The Lion's Mane Jellyfish
Octonauts
S03E15 - The Red Rock Crabs
Octonauts
S03E16 - The Sea Sponge
Octonauts
S03E17 - The Immortal Jellyfish
Octonauts
S03E18 - The Urchin Invasion
Octonauts
S03E19 - The Hammerhead Sharks
Octonauts