What reading level is The Secret World of Mermaids?

The Secret World of Mermaids by Jordan Quinn is at a Level 3 reading level (Lexile 580L). Recommended for Lower Grades readers (Ages 5-8).

What age is The Secret World of Mermaids appropriate for?

The Secret World of Mermaids is recommended for Ages 5-8. HootRating: 8C (Clear).

What genre is The Secret World of Mermaids?

The Secret World of Mermaids is fiction — Juvenile Nonfiction.

Does The Secret World of Mermaids have any content warnings?

The Secret World of Mermaids has a HootRating of 8C (Clear). No specific content flags noted. On HootRated, every book is rated across four dimensions — emotional, physical, social, and thematic — to help parents make informed choices.

How many pages is The Secret World of Mermaids?

The Secret World of Mermaids by Jordan Quinn is 117 pages.

Reviewed by HootRated editorial · Last updated May 18, 2026

The Secret World of Mermaids

Jordan Quinn

The Secret World of Mermaids

Age Rating, Reading Level & Content Guide

by Jordan Quinn

Illustrated by McPhillips, Robert, illustrator

Reading Level 3 8C Ages 5-8 Balanced Read

The text is written at a 3rd grade reading level, the subject matter is intended for younger children (ages 5–8), and the content is gentle with no concerning themes.

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About This Book

The salty spray of the sea fills your nose as waves rock a tiny raft beneath you. Suddenly, the water parts to reveal a shimmering coral kingdom, glowing with colors you've never seen. A mysterious dark-haired mermaid reaches out to help—but what secret is hidden beneath the sparkling waves?

Themes

Fantasy World-Building Family Adventure

Quick Assessment

This early reader fiction follows siblings Lucas and Clara as they encounter a hidden underwater kingdom and a mermaid who helps them after a sudden wave throws them into the sea. The story touches on themes of family, royal duty, and ancient pacts, suitable for children ages 5-8. It features gentle adventure with no intense content, making it appropriate for young readers.

Why we rated The Secret World of Mermaids 8C

The Secret World of Mermaids is written at a Level 3 reading level with a Lexile measure of 580L across 117 pages. Strong independent readers around grade 4.0 can typically handle this book on their own; with parent or teacher support, The Secret World of Mermaids works for readers up to grade 5.0.

We rate The Secret World of Mermaids as 8C ("Clear") because the content sits in the "Gentle" range — no conflict beyond everyday childhood experiences. Across our four dimensions (emotional, physical, social, thematic) the book reads as evenly gentle; no single dimension stands out as a concern.

No specific content flags were raised by community reviewers, which is consistent with the gentle intensity score.

Thematically, The Secret World of Mermaids explores fantasy world-building, family, and adventure — these threads give the book room to mean different things to different readers.

Good fit for

✓ Children in the Ages 5-8 range — the maturity and attention span match the story's pacing.
✓ Patient readers who enjoy slower, character-driven stories.
✓ Kids drawn to stories about fantasy world-building, family, adventure.