What If There Were No Sea Otters? : A Book About the Ocean Ecosystem, Paperback by Slade, Suzanne; Schwartz, Carol (ILT), ISBN 1404863974, ISBN-13 9781404863972, Brand New, Free shipping in the US

The ocean ecosystem is huge, covering most of our planet. Countless animals and plants live there. So what difference could the loss of one animal species make? Follow the chain reaction, and discover how important sea otters are.