The book talks about different cross species partnerships that are found in nature. The first page gives a general introduction of our understanding of partnerships in nature, each following page devotes about one page of text to a different animal partnership and the opposite page illustrates the two animals in the partnership. Some of the animal partnerships that are described in the book are the cleaner-wrasse and the coral cod, and the striped remora and the great white shark. The part of the book I enjoyed most was the pictures. The illustrations are very colorful, detailed, and lifelike. The book would be a great tool when teaching science units about mutualistic relationships. Children could break into group and each be assigned one relationship to study and explain to the class. While the subject itself is interesting to me, the text has a tendency to be somewhat try and textbook like. The book would probably be better suited for an older elementary class, though a child of any age could appreciate the illustrations. ( )