I loved this book it was a great start to a really action-packed series that I will read more of in February. I liked the characters especially Hylas, Spirit, and Pirra they were interesting Hylas is so real in his efforts to survive and find his sister I liked the dolphin and Pirra she was well written. I liked the story it was well written and started with a bang with Hylas hiding from danger and it only got better from there. So overall I really enjoyed this book I will continue the series I liked it a lot.