I really like animal fantasy, like Watership Down and Charlotte's Web , which is why I asked for and received several books out of the Redwall series for Christmas some years ago, and even though I'm an adult, those of you who know me know that I enjoy an occasional dabble with young adult fiction. But after reading Redwall itself, I haven't read another book in the series until now. I wouldn't say they are bad books; they are just intended for an audience a level or two below the audience for the YA fiction I am able to read and enjoy. Consequently, there isn't really enough depth to them for my entertainment.
Pearls is no exception. The idea is interesting, and the sea adventure aspects of the plot would be thrilling for a boy of about ten. But the literary devices are too simplistic and overdone for an adult to get more than an eye-roll out of them. The biggest weakness I can identify for the intended audience is the length. While the chapters are short enough, the overall length of the novel, at over 350 pages, might be too long to hold the attention of a child of nine or twelve.