Octonauts Season 4 Episode 18 Octonauts and the Hippos ( Air Date 2017-09-20 ) Genre Kids, Animation, Action & Adventure category. Overview "Trying to return home from a mission along an African river, the Octonauts have trouble getting past a gang of large, mud-splatting, territorial hippos.".
Octonauts Season 4 Episode 18 Octonauts and the Hippos
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- Stars: Keith Wickham, Simon Greenall, Jo Wyatt, Rob Rackstraw
- Director:
