The Salish Sea has been officially recognized by both Canada and the United States as the bodies of water that straddle the border between British Columbia and Washington. It's pronounced SAY-lish, and named for the Coastal Salish people that lived on the shores.
It includes Puget Sound (taken from the top of the Seattle Space Needle).
Strait of Juan de Fuca (looking back at the Olympic Mountains from the Coho ferry).
Saanich Inlet (taken from Mt. Malahat on Vancouver Island)
The Strait of Georgia (taken from Chemainus, BC, also on Vancouver Island).
These are some of my fave pics of the Salish Sea, taken at sunrise from Willows Beach in Victoria, BC on my last trip in 2010.