The Discovery
Scholastic Inc. 2003
Book 20 of Animorphs
Great fit for 4th grade
Reading level and content both target 4th–8th grade · ages 9–14
Book 20 in a series — earlier books first
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Genre
Themes
- teamwork
- courage
- greed vs. loyalty
- survival
- treasure hunting
- trust
- ethics
- problem-solving
About this book
Four teens join a summer marine expedition and find more than coral and fish—they uncover clues to a sunken treasure. As they dive after the wreck, danger rises from shifting seas, circling sharks, and the pressure of keeping a massive secret. The story blends fast-paced action with underwater science and teamwork, pulling readers through short, cliffhanger chapters. Perfect for middle-grade adventure fans who like high stakes, ocean settings, and a hint of mystery.
Setting: A research vessel and underwater habitat in the Caribbean, present day
Frequently Asked Questions
Is The Discovery right for my child?
Yes — The Discovery is a great fit for 4th grade. The reading level is AR 4.6, which is typical for 4th grade. The interest level is rated Middle Grades (4–8), meaning the themes and content are designed for ages 9–14 (4th–8th grade). Themes include teamwork, courage, greed vs. loyalty. Note: this is book 20 in a series — your child should read the earlier books first.
How long does it take to read The Discovery?
At a typical 4th grade reading pace, The Discovery takes around 3.1h to finish. The book has 28,000 words. Slower or faster readers may vary significantly.
Does The Discovery have an AR quiz?
Yes — The Discovery has an AR quiz available, worth 4 points. Your child will need to take and pass the quiz through their school's Accelerated Reader program to earn credit. The quiz is typically 5–20 multiple choice questions about plot, characters, and setting.
What grade level is The Discovery?
The Discovery has an AR reading level of 4.6, which places it at a 4th grade reading difficulty. The interest level is rated Middle Grades (4–8) — this reflects the age-appropriateness of the content and themes, not just the reading difficulty. A strong younger reader may handle the words fine while the themes are aimed at an older audience, or vice versa.