Sea Otter Heroes: The Predators That Saved An Ecosystem / by Patricia Newman. 10.1.2018

Millbrook Press ISBN 9781512426311

YA Grades 4 to 9 Rating: 4

Thoughtfully organized with enticing photos of fluffy-faced otters, Sea Otter Heroes presents an interesting story of the relationship between sea grasses and sea otters in a California bay inlet. Utilizing the work of marine biologist Brent Hughes, students come to understand the role of sea otters in maintaining ecosystems. Studying the nutrient-polluted estuary fed by fertilizers and pesticides used in nearby farming, Hughes discovered that sea otters, the top predators in the food chain, help keep the sea grass algae-free through their feeding habits, which allows the fish population to grow and expand and, in the long term, preserves a natural barrier to storms.

Source notes, glossary, bibliography, suggested resources, and index add to the quality of this title. Sidebars called “Otterisms” both demonstrate and brighten the text. Clear, full-color photographs and illustrations offering scientific diagrams make it easy to see how Hughes’ theory was confirmed. The layout, done much like a picture book, may deter older readers. But since the story is presented as a mystery, clues unfold as the researcher discovers them. Why are the sea grasses in Elkhorn Slough flourishing when the waterway is one of the most polluted waterways in the country? This will help keep readers stay engaged. The final chapter on conservation includes relevant experiments and ways in which young people can help the environment on a daily basis.

Leroy Hommerding, CLJ