Underwater Kingdom
Discover a lost city in a magical submarine
What's included
Personalised with your child's name and look
Choose from multiple character looks
First digital story is free — no subscription
Read instantly on any device, or order a hardcover
A Deep-Sea Puzzle Adventure
Your child pieces together an ancient map through jellyfish tunnels, a coral library, and a volcanic garden. A story that rewards curious minds.
Captain of Their Own Submarine
Personalised with your child’s name, look, and pronouns. They’re the one at the wheel, turning the handle marked ‘TURN ME.’
Light for a Forgotten City
A glowing pearl restores light to a lost kingdom. A gentle metaphor about using curiosity and kindness to bring places (and people) back to life.
Glowing Watercolour Worlds
Luminous jellyfish, coral-covered ruins, and volcanic vents blooming with strange flowers, all rendered in richly detailed watercolour.
Customer Reviews
Based on 9 reviews
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Jellyfish tunnels are magic
Priya S.
Verified BuyerThe glowing jellyfish tunnel pages look amazing. My daughter asks to read it in a dim room so the colours look even better. Beautiful little book.
Oliver N.
Verified BuyerLove the library page with the wise sea turtle. My son treats every page like a puzzle and points at clues. Hes 6 and re reads it most nights.
Curious kid approved
Kate S.
Verified BuyerWe have an extremely curious 5 year old and she loves that the story is about solving puzzles to restore light. Leads to lots of weird questions at bedtime.
Photos from Reviews
Frequently Asked Questions
Underwater Kingdom is written for children aged 3 to 8. The hero’s journey structure, map-piecing puzzles, and lush worldbuilding hold the attention of kids who’ve outgrown shorter books.
No. The lost city is dim but calm, the sea turtle is friendly, and every puzzle has a clear, satisfying answer. The book resolves in warm light when the pearl is restored.
Your child is the submarine pilot throughout. You choose their name, pronouns, and a character look so they see themselves exploring the glowing tunnels and the volcanic garden.
Each book is printed on premium 200gsm silk paper with a hardcover binding. The luminous blues and corals reproduce beautifully. It’s a keepsake-quality book made to last.
Books are printed on demand and typically ship within 3 to 5 business days. Delivery times vary by location: domestic orders typically arrive in 7 to 10 business days, international orders in 10 to 15 business days.