SCIENCE
Newman, Patricia

Sea Otter Heroes: The Predators That Saved an Ecosystem

(3) 4-6 What kept the seagrass in California's Elkhorn Slough so healthy, despite fertilizer runoff from nearby farms? When marine biologist Brent Hughes investigated this question, he learned the vital role sea otters play in the slough ecosystem. The book's wide, picture-book trim size accommodates the many photos and diagrams that supplement the fairly advanced, fascinating scientific information in the text. Reading list, websites. Bib., glos., ind.

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