Deep is a YA dystopian book, the first of the Deep Blue Colony series, and one I definitely recommend. The writing is smooth and pulls you in from the start till finish. It's got a good pace and two POV'S. 

Aside the two main characters there's also a good diversity of other characters, a thrilling storyline, dystopian world, interesting and advanced technology and a lot of secrets, betrayals and mysteries. The book had some twists I expected but also some I didn't see coming, which made it all the more fun to read. 

Any YA dystopian lovers will adore this book and should definitely check it out!