Lynda Mapes and her colleagues explored the plight of the southern resident killer whales, among the most enduring symbols of the Puget Sound region and among the region’s most endangered animals. They examined the role humans have played in the decline of the orcas, what can be done about it and why it matters. They looked at why Canadian orcas are healthy and growing in numbers while Puget Sound orcas are fighting for survival. They explored the relationship between chinook salmon and the southern resident orca pods, with both species struggling for survival after a century of habitat loss…