The southern resident killer whales face three different sources of threats: the contaminants in the water; the lack of availability of prey, which is largely chinook salmon; and physical and acoustic disturbance from ships.
The measures we have taken are intent on addressing the declines in numbers we've seen. The focus for all species at risk is initially stopping the decline and then starting to turn that around over time. That's exactly what we are intent on doing through the measures we've put in place.