Octonauts· Season 4 · Episode 2Octonauts and the Hidden LakeS04E02·September 24, 2015·11m·CBeebiesThe Octonauts are exploring Antarctica, when Shellington discovers strange microscopic creatures living under the ice.Streaming on (US) See allSharePreviousOctonauts and the Poison Dart FrogsS04E01 · 10.0NextOctonauts and the Octopod MysteryS04E03Keep 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.
