In this book, we follow Pearl, a marine scientist, and learn about what being a marine scientist involves. We learn all about the animals and plants that Pearl studies in the ocean. Marine scientists try to understand how the animals and plants live alongside each other and what the sea creatures need to survive. Pearl raises awareness about things we can do to protect the oceans and the creatures living in it. Underwater Detective is in Lime+ Book Band, Oxford Reading Level 12. Project X Hero Academy Non-fiction is an inspirational series of books which broadens children's subject knowledge, while consolidating their phonics learning and improving their reading fluency.