This archipelago rests north of 
Puget Sound, in the 
Juan de Fuca Strait, Washington State, and is part of the 
Salish Sea. The San Juan Islands are divided from their nearby Canadian cousins, the 
Gulf Islands, by the 
Haro Strait. Of the collection of more than 170 islands, the largest are 
San Juan, 
Orcas, and 
Lopez, followed by the smaller, sparsely inhabited, Stuart, Waldron, Lummi, Shaw, Blakey,
                  Cypress, Guemes, and Decatur islands.
1Though 
San Juan Island planted the seed for the Pig War, the surrounding islands, too, were swept into the
                  outcome of the political fray, and ceded to the United States in 1872 by boundary-arbiter
                  Emperor William I of Germany.
2