Exciting magical adventure series - will you answer the call of the 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.A colony of puffins is endangered by a building development and baby birds are constantly under threat from the diggers. Can Antonia and Cai protect the pufflings and their cliff top home?