Moonlight Magic (Silver Dolphins, Book 6)

Exciting new magical adventure series 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.
When Antonia goes on holiday, she doesn’t expect her necklace to sound until she returns to Sandy Bay. But when exotic sea creatures are in danger, she hears their call. Who needs her help in the moonlit waters?