Puget Sound is the second largest estuary in the United States.
A delicate habitat, where freshwater and saltwater merge, estuaries are among the most productive places for life to exist on the planet.
Last year, almost 65,000 gallons of oil spilled into Puget Sound waterways.
Salmon are the iconic species of this special place.
Toward the end of their life out in the ocean, they must undergo an epic journey in order to give birth to the next generation.
If they don't make it back home, to the exact place where they were born, their eggs will never hatch and their children will cease to exist.
The biggest polluter in Puget Sound is the rain itself.
Stormwater picks up brake dust, motor oil, antifreeze, pesticides; an entire slew of chemicals that kill salmon and the marine life in our oceans
"Nature's Scorecard" is a project to rank the quality of green infrastructure in the cities around the Sound.