Octonauts· Season 4 · Episode 18Octonauts and the HipposS04E18·September 20, 2017·11m·CBeebiesTrying to return home from a mission along an African river, the Octonauts have trouble getting past a gang of large, mud-splatting, territorial hippos.Streaming on (US) See allSharePreviousOctonauts and the Yellow Bellied Sea SnakesS04E17NextOctonauts and Operation CooperationS04E19Keep goingSeasonSeason 4 ranked & reviewedEvery episode in airing order with ratings and dates.StreamWhere to watch OctonautsEvery streaming service and region, checked around the clock.MatchupShows like OctonautsThe closest matches, ranked by overlap and rating.
