COMPANION TO: BRINGING BACK THE WOLVES, ISBN 9781771386258. In this unique look at how one animal can make a difference for the planet, Adrienne Mason reveals how whales are ecosystem engineers - animals that create, modify or maintain a habitat or ecosystem. Marine biologist by day, author by night, Adrienne Mason lives in Tofino, BC. Illustrator Kim Smith lives in Calgary, AB. Ages 8 to 12