Analysis of information sources in references of the Wikipedia article "South Puget Sound" in English language version.
Puget Sound is a fjord-like estuary located in northwest Washington state and covers an area of about 2,330 km2, including 3,700 km of coastline. It is subdivided into five basins or regions: 1) North Puget Sound, 2) Main Basin, 3) Whidbey Basin, 4) South Puget Sound, and 5) Hood Canal(entire document at https://www.nwfsc.noaa.gov/publications/scipubs/techmemos/tm44/tm44.htm)
Marine Area 13 (South Puget Sound) encompasses all waters south of the Tacoma Narrows Bridge.