Danger, mystery, and high adventure await as Cruz boards the Explorer Academy ship on a dangerous mission to the icy north in search of the first piece of his mother's hidden cypher. In the exciting follow-up to The Nebula Secret in the Explorer Academy series, Cruz, Sailor, and Emmett, along with their new ally Bryndis, embark on their first globe-trotting mission aboard the ship Orion. Cruz jumps right back into school and starts using the latest technology in submersible underwater dives, but is soon reminded of the danger he's in when someone tampers with his diving helmet and he almost drowns. Determined to keep his eyes on the prize, Cruz sneaks away to try to find answers, but unknowingly lures his friends into bigger trouble. When a friend of Cruz's mom meets an untimely end, Cruz's luck really seems about to run out. Who is following him? And why? This captivating follow-up to book one is the sequel every Explorer Academy fan is waiting to read!

 

 

This book is part of a book series called Explorer Academy .

This book has been graded for interest at 8-12 years.

There are 208 pages in this book.

It is aimed at Young Adult readers. The term Young Adult (YA) is used for books which have the following characteristics: (1) aimed at ages 12-18 years, US grades 7-12, UK school years 8-15, (2) around 50-75k words long, (3) main character is aged 12-18 years, (4) topics include self-reflection, internal conflict vs external, analyzing life and its meaning, (5) point of view is often in the first person, and (6) swearing, violence, romance and sexuality are allowed.

This book was published in 2019 by National Geographic Kids .

National Geographic Kids collaborates to put forth fun and interesting non-fiction for kids.