Gr 6 Up-These useful, informative books examine marine life, ecology, and environmental issues concerning the largest portion of the Earth. Good scientific information is blended with an obvious respect for and love of the subject. The first title presents a comprehensive discussion of the physical aspects of the continental shelf; the variety of life beneath, on, and above the waters; and the many dangers to the health of these realms. In Ocean, the areas beyond the continental shelf are profiled, and food chains, the diversity of life forms, and the anatomy of sea animals are discussed. In the third title, the many crises besetting the ocean environment are carefully noted and analyzed. The laws dealing with problems and the ways in which the oceans are exploited are examined. In clear language, the imminent dangers involved in continuing on this path are discussed. All three titles have helpful color photos and black-and-white charts and drawings. These important works are accessible to a variety of student abilities and should be considered for all collections.-Eva Elisabeth VonAncken, Trinity-Pawling School, Pawling, NY Copyright 2006 Reed Business Information.