Secret Friends, , HarperCollins Publishers, Summer Waters,Children’s / Teenage fiction: Action and adventure stories,Children’s / Teenage fiction and true stories, underwater;dolphin;rescue;adventure;charity;environment;green;pollution;charm necklace;Cai;Antonia;Bubbles;beach;Sea Watch,, , United Kingdom, en-UShttps://www.harpercollins.co.ukunderwater;dolphin;rescue;adventure;charity;environment;green;pollution;charm necklace;Cai;Antonia;Bubbles;beach;Sea Watch, [BLURB],[CITY],,books, ebooks, biblet, Book2look