Dive into another exciting magical adventure for girls -- will you answer the call of Silver Dolphins? Antonia is a secret Silver Dolphin -- she's responsible for helping the creatures of the bay when their environment is threatened, by responding to the call of her magic necklace. Antonia and Cai are helping Hannah set up another Sea Watch charity to look after local dolphins and seals. But when thunderstorms cause a landslide, the Silver Dolphins face their biggest challenge yet!

About the Author

Summer Waters is the pen name for Julie Sykes, a successful picture book author and a full-time mum, with more than two million copies sold of her character series. Before becoming an author she worked as a laboratory technician and then a teacher. She's always had a love for Cornwall but currently lives in Hampshire with her husband and three children in a 200-year-old cottage.