Danny Dunn on the Ocean Floor No 9
by Jay Williams
Age rating: Ages 10–13 · Children
Age rating and Christian content guidance for parents.
First published 1960
Danny Dunn and his friends explore the ocean floor in a submarine, encountering scientific mysteries and unexpected challenges.
Concern Level
Clean
Virtue Level
Thin
Concern Level
Clean
Virtue Level
Thin
What is Dokilit?
Dokilit is an AI-powered content guide for Christian parents. We analyse books through the lens of faith and family, then show you the concerns, the virtues, and the conversation points that matter for your home.
Things to consider
Higher = more presentNo sexual content is present in the story.
Mild peril and technical challenges are present.
No profanity is used by the characters.
No blasphemous language or themes are included.
No substance abuse is depicted in the book.
No instances of suicide or self-harm are present.
The story is adventurous, not scary.
The focus is on science and exploration.
No LGBTQ+ themes or characters are present.
The worldview is scientific and rational.
No negative portrayals of Christians or God are present.
Virtues to celebrate
Higher = stronger presenceDanny and his friends face challenges with determination.
No Christian faith elements are present.
Friendship and teamwork are important themes.
No themes of grace, mercy, or repentance are central.
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