Oliver has had ten years of exploring with his parents (since he was a baby). Finally, his parents can not find anything else to explore so they decide to move back home. When they get home Oliver's parents discover there are new islands near their house that are not on any maps. So they decide to explore those islands but his parents become missing at sea! Oliver goes to find them and on the way he meets some unsuspected friends, a seabird, a mermaid and a moving island called Cliff. Then it becomes a big adventure to try to find his parents!
I loved this book because it's really exciting. The whole adventure is out at sea and I like swimming so that's why I enjoyed the story. I would recommend this book to others, kids and adults, because it's a great mystery and you won't want to put the book down!