Gr 5-8 Passionate scientists across the world are engaged in epochal research to understand and find ways to mitigate the harmful effects of human activity on the oceans. The depletion of fish populations, the prevalence of microplastic pollution, and coral reef bleaching are challenges tied together by the fact that no more than 15 percent of the ocean floor has been mapped with high resolution. In this rich outline of current research, long text blocks are broken up by numerous sidebars that make connections to related topics (for example, outlining the process of chemosynthesis used by creatures living in extreme deep-sea thermal vents). Along with a colorful layout and numerous photos and diagrams, the presentation is inviting for reluctant readers without sacrificing contextual depth. Many of the sidebars offer insightful profiles of scientists working in the field, such as Eva Majerovà, a postdoctoral fellow at the University of Hawaii. Majerovà began her career as a cancer researcher in Belgium but later used her clinical biology skills to investigate coral bleaching at the molecular level. Several pages of source notes are included, as well as an extensive bibliography of print and online materials and suggestions for further inquiry. VERDICT This title could serve as a rich source for topical research or inspiration to students interested in pursuing studies in science. Highly recommended for all elementary and middle school libraries. Bob Hassett, Luther Jackson Middle School, Falls Church, VA

Following an introduction to the dual challenges of climate change and ocean exploration, Peterson dives into the science and technology being used to investigate and protect Earth's oceans. The scholarly text begins with a section on "The Physical Ocean," covering such topics as ocean currents, the chemistry of ocean water, and mapping the ocean floor. The lengthier second section, "The Living Ocean," looks at the overharvesting of fish, the rise of jellyfish, life in the ocean's twilight zone, and more topics related to the ocean's food web. Each chapter not only explains how climate and other changes are affecting the topic but highlights ongoing scientific studies trying to understand these problems and generate solutions. The chapter on coral in peril, for instance, explains how scientists at the University of Hawaii are studying how elevated water temperatures are contributing to coral bleaching. Scientist profiles, photos of the scientists in action, graphs, and other visuals throughout add context and relevance. For STEM collections focused on oceanography and real-world applications.

Explore the ocean with over a dozen oceanography professionals who use technology to further their scientific research and counter the effects of climate change.Clearly organized chapters are divided into two sections, the first about the ocean's physical properties and the second about marine animals, starting with microscopic phytoplankton and progressing to blue whales. The main text of each short chapter focuses on a research question currently being studied using technology. The engaging narration is augmented with easily digestible scientific information presented in callout boxes and profiles of professionals from around the world, many of them women, with primary source quotations that provide a glimpse of potential career paths and advice on how to gain experience at school and in the field. Throughout, readers are reminded that science and technology can help humans learn more about the ocean in order to make better choices to protect our planet. Visual context is provided through illustrated diagrams and color photographs showing professionals and their equipment in the field as well as images captured during expeditions. Most scientific terms are defined contextually and/or in the glossary. Written by an experienced and passionate STEM nonfiction author, technical specificity is deftly balanced with engaging writing in this title that is perfect for homework and leisure exploration.A captivating and well-researched deep dive into oceanography. (glossary, source notes, further reading, index, photo credits) (Nonfiction. 12-18)