Deep Blue Planet Books in Order
2 books by Renato Massa. Reading level: Grade 7.8. Middle Grades (Ages 9–12).
Series books grow with readers — but that's also the trap. Most series start at one reading level and one content intensity and drift upward over the course of the run. Deep Blue Planet (2 books by Renato Massa) lands at reading level Grade 7.8, with average content intensity 1/5. Intensity stays consistent across the series — a kid who can handle the first book can generally handle the rest.
The reading-order table below lists every book with per-volume reading level and intensity badges so you can spot any escalation before it catches your reader off guard. For a deeper dive into how we score text difficulty vs. emotional weight separately — and why series readers especially benefit from that split — see our methodology page.
Content Intensity Across the Series
ConsistentContent stays at a steady intensity level throughout the series.
Deep Blue Planet Reading Order
| # | Title | Reading Level | Content |
|---|---|---|---|
| 1 | Along the coasts Renato Massa | Level 7-8 | Gentle |
| 2 | Oceans and seas Alex Voglino | Level 7-8 | Gentle |
All Deep Blue Planet Books
Questions about the Deep Blue Planet series
- What reading level is the Deep Blue Planet series?
- The Deep Blue Planet series by Renato Massa is at a Grade 7.8 reading level (average Grade 7.8). Intended for Middle Grades (Ages 9–12). There are 2 books in the series.
- What order should I read the Deep Blue Planet books?
- The reading-order table above lists all 2 books with per-volume reading level and intensity ratings. Start with book 1 and read in publication order unless the table indicates a different recommended order for newer readers.
- What age is the Deep Blue Planet series appropriate for?
- The Deep Blue Planet series is recommended for Middle Grades (Ages 9–12). The average content intensity is 1/5. Check the intensity trajectory above to see whether content gets heavier across the series — if it does, sensitive readers may want to stop earlier in the run.