Ultramarine
Jenny Nimmo
Ultramarine
Age Rating, Reading Level & Content Guide
by Jenny Nimmo
The text is written at a 4th grade reading level, the subject matter is intended for middle graders (ages 9–12), and the content is mild with minimal sensitive material.
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About This Book
What if a mysterious man suddenly appeared from the sea, changing everything you thought you knew about your family? Imagine discovering secrets from the past while racing against time to save birds trapped by a dangerous oil spill. Can two siblings unlock the truth and protect the ocean before it's too late?
Themes
Quick Assessment
This middle-grade fiction follows a brother and sister who uncover family secrets after a mysterious man emerges from the sea. Together, they work to rescue birds endangered by an environmental disaster, introducing themes of family, identity, and environmental protection. Suitable for ages 9-12, this story balances adventure with thoughtful messages about nature and relationships.
Why we rated Ultramarine 9LE
Ultramarine is written at a Level 4-5 reading level across 199 pages. Strong independent readers around grade 5.5 can typically handle this book on their own; with parent or teacher support, Ultramarine works for readers up to grade 6.5.
We rate Ultramarine as 9LE ("Light — Emotional") because the content sits in the "Mild" range — mild conflict — the kind a child encounters in normal play and sibling life. Across our four dimensions (emotional, physical, social, thematic) the book reads as evenly mild; no single dimension stands out as a concern.
Specific content flags noted by reviewers: Mild Peril, Environmental Threat.
Thematically, Ultramarine explores brothers and sisters, identity, sea stories, environmental protection, and parent and child — these threads give the book room to mean different things to different readers.
Good fit for
- ✓ Children in the Ages 9-12 range — the maturity and attention span match the story's pacing.
- ✓ Patient readers who enjoy slower, character-driven stories.
- ✓ Kids drawn to stories about brothers and sisters, identity, sea stories.
Maybe not for
- ! Reluctant readers who need a fast hook — the pacing here rewards patience.
For Parents
Content Intensity
9LE — Light — EmotionalLight conflict or tension. Mild peril resolved quickly.
Content Flags
Was our "Mild" content intensity rating accurate for this book?
Reading Insights
Hook Factor
1/10A steady, thoughtful read that rewards patient readers.
Discussion Potential
2/10A lighter read — great for independent enjoyment.
Book DNA
Multi-dimensional content fingerprint
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Details
Book Length
- ISBN
- 0525448691
- Pages
- 199
- Publisher
- Dutton Childrens Books
- Published
- 1992
- Type
- Fiction