The San Juan Islands are an archipelago in the Pacific Northwest of the United States between the U.S. state of Washington and Vancouver Island, British Columbia, Canada. The San Juan Islands are part of Washington state.

At mean high tide, the archipelago comprises over 400 islands and rocks, 128 of which are named, and over 478 miles (769 km) of shoreline. The majority of the San Juan Islands are quite hilly, with some flat areas and valleys in between, often quite fertile.

There are no traffic lights anywhere in the islands. ... Just a 30-minute seaplane flight from Seattle or a scenic ride on a Washington State Ferry. In summer, passenger ferries connect Bellingham, Port Townsend, and Seattle with the Islands New National Monument Status (1,000 acres).

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