
Cities Under the Sea
Oliver dives to the seafloor, where hydrothermal vents raise mineral towers and keep whole communities alive without sunlight.
- Best for ages8 to 10
- Length14 min
- Topicthe Earth
- Read along5 languages
- AdsNone, ever
- OfflineYes, once downloaded
Cities Under the Sea turns real the Earth science into a calm bedtime story. The narration stays gentle and the facts stay accurate, so curious children fall asleep on a sense of wonder instead of a screen full of noise.
Scenes from the story



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Questions about Cities Under the Sea
What age is Cities Under the Sea for?
Cities Under the Sea is a calm bedtime science story for children aged 8 to 10, narrated gently so it works as part of a wind down routine before sleep.
How long is Cities Under the Sea?
Cities Under the Sea runs about 14 min, a comfortable length for a single bedtime listen.
What languages is it available in?
The narration and read along text are available in English, French, Spanish and Portuguese (European and Brazilian), five languages in total, so families can listen and read in their own language.
Does Dreamtime Stories have ads?
No. Dreamtime Stories has no ads and no behavioral advertising. Cities Under the Sea plays start to finish with nothing that interrupts a child at bedtime.
Can we listen offline?
Yes. Once a story is downloaded in the Dreamtime Stories app it plays offline, so bedtime works without Wi Fi, on a plane or in the car.
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