During an ordinary visit to the library, a girl pulls a not so ordinary book from the shelves. As she turns the pages in this book about coral reefs, the city around her slips away and she finds herself surrounded by the coral cities of the sea and the mysterious plants and animals that live, hunt, and hide there. Jason Chin's follow up to his critically acclaimed book Redwoods is a bold and beautiful picture storybook filled to the brim with fascinating facts about the coral reefs.