Reading Metrics
Grade Level
Middle Grades (MG 4-8)
Book Level
7.3
Points
2.0
Fiction/Nonfiction
Nonfiction
Word Count
11468
Points per Word
0.000174
Description
From firefly squid glowing against a night sky to a cave filled with the largest crystals ever found, you'll uncover the stories and science behind these wonders, the threats they now face and the efforts taking place to save them.