Gr 5-8 While the subtitle leads one to believe that the heart of this book is about the science of ocean currents, it's actually about why we need to protect our marine environment. Burns tells the tale of Dr. Curtis Ebbesmeyer, an oceanographer who started to track trash (flotsam) that washed up on the shore near his Seattle home. Through floating sneakers and bath toys that accidentally fell off container ships and a computer program named OSCURS, Ebbesmeyer tracked the currents of the ocean. These experiments led to a discussion of how debris is polluting our oceans and causing harm to marine life. Burns introduces the work of several scientists who are working to clean up ghost nets and other dangerous debris. The well-written narration will keep readers engaged, and it's excellent for reports. The science is clearly explained, and the vivid and lively photographs and well-labeled charts and diagrams help to create interest and build understanding. This title will get readers thinking and possibly acting on these problems."Esther Keller, I.S. 278, Marine Park, NY"
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