The language is lively throughout and, at times—when the underwater world of the deep-sea trench is described—almost poetic. The illustrations are a firework of colours, rich detail, and humour, bringing the story to life with energy and delight. The whole story is inventive and ends in a rousing crescendo /…/ The book’s final spread, with facts about the deep sea, is engaging, exciting, and fun.

Before you know it, the duo finds themselves in an almost irresistibly colorful sea of butterflyfish, angelfish, and eagle rays. With Grandma at the helm, the adventure continues into the darkest corners of the deep. The result is fun, easy to follow, and full of action—all at once.

With fast-paced action, humor, and a colorful palette, it’s easy to spark interest in the secrets of both the deep sea and mechanical workshops.

An exciting adventure with a perfect balance between facts and story that keeps you wanting to read on. Nothing is oversimplified, as is sometimes the case in children’s books, so we learn the correct names of the animals and objects encountered in the story. /…/ The humorous and mischievous illustrations lead to many laughs, and soon we are just as happy as the characters in the book.