Teachers and students will discover much useful material in this upbeat entry in the Kids Can! series. The book begins with an overview of the water cycle, the ocean's composition and earth's ratio of water to land. Subsequent sections explore waves and currents, life in the ocean including a chart of the ocean's animal kingdom by phylum and class, and conservation issues. Activities that illustrate the concepts — how blubber works and how to clean up an oil spill, for example — are creative, illuminating and easy to follow. Lighthearted cartoon art adds to the appeal of this fact-packed title.