Bound To Stay Bound

School Library Journal - 05/16/2025 Gr 3–7—A compelling and accessible nonfiction text for upper elementary readers, this book follows scientists studying how climate change and underwater noise pollution affect narwhals, a keystone species in the Arctic. Readers are introduced to real-world scientific inquiry as researchers tag narwhals, including a memorable whale named Nemo, and gather data on their heart rates, dive patterns, and behavioral responses to seismic air guns and ship engines. Markle effectively translates complex topics, such as echolocation, Arctic migration patterns, and ecological disruption, into age-relevant language. Vivid photographs, maps, diagrams, and firsthand quotations from experts in the field add authenticity and depth. The book's structure mirrors the scientific process, guiding readers from hypothesis formation to testing and analysis. What sets this book apart is its call to action. The author outlines solutions like underwater bubble barriers, reduced ship speeds, and clean energy technologies, while encouraging readers to reduce their carbon footprints. This balance of urgency and optimism makes the book both educational and empowering. VERDICT Perfect for interdisciplinary instruction in supporting science, literacy, and environmental stewardship and great for in-depth nonfiction reading and practice.—Tracey S. Hodges - Copyright 2025 Publishers Weekly, Library Journal and/or School Library Journal used with permission.

Booklist - 03/01/2025 Markle's latest book in the Science Discoveries series reports on efforts to determine what factors threaten the survival of narwhals, a keystone species in the Arctic Ocean. Although the text states that the International Union for the Conservation of Nature does not consider these whales to be at risk for extinction, Markle points out that many scientists disagree with that conclusion. As climate change reduces the amount and the thickness of ice in the Arctic Ocean each year, more large ships are passing through the Arctic waters, bringing increased noise pollution. The engines’ unfamiliar sounds interfere with the narwhals’ ability to communicate with each other and the use of echolocation to find their prey. Scientists have concerns about the narwhals' ability to survive in their rapidly changing environment. A useful map demonstrates how international shipping routes have shifted. Also, the warmer Arctic waters are melting the narwhals’ safe havens beneath the ice. Illustrated with color photos of narwhals and scientists who study them, this informative book is a worthwhile addition to Markle's well-regarded series. - Copyright 2025 Booklist.