Puget Sound ( ; ) is a complex estuarine system of interconnected marine waterways and basins located on the northwest coast of the U.S. state of Washington. As a part of the

Salish Sea The Salish Sea ( ) is a List of seas on Earth #Terminology, marginal sea of the Pacific Ocean located in the Provinces and territories of Canada, Canadian province of British Columbia and the States of the United States , U.S. state of Washingto ...

, the

sound In physics, sound is a vibration that propagates as an acoustic wave through a transmission medium such as a gas, liquid or solid. In human physiology and psychology, sound is the ''reception'' of such waves and their ''perception'' by the br ...

has one major and two minor connections to the

Strait of Juan de Fuca The Strait of Juan de Fuca (officially named Juan de Fuca Strait in Canada) is a body of water about long that is the Salish Sea's main outlet to the Pacific Ocean. The Canada–United States border, international boundary between Canada and the ...

, which in turn connects to the open Pacific Ocean. The major connection is Admiralty Inlet; the minor connections are

Deception Pass Deception Pass (; ) is a strait separating Whidbey Island from Fidalgo Island, in the northwest part of the U.S. state of Washington (state), Washington. It connects Skagit Bay, part of Puget Sound, with the Strait of Juan de Fuca. A pair of bri ...

and the Swinomish Channel. Puget Sound extends approximately from Deception Pass in the north to Olympia in the south. Its average depth is and its maximum depth, off Jefferson Point between Indianola and Kingston, is . The depth of the main basin, between the southern tip of

Whidbey Island Whidbey Island (historical spellings Whidby, Whitbey, or Whitby) is the largest of the islands composing Island County, Washington, Island County, Washington (state), Washington, in the United States, and the largest island in Washington stat ...

and Tacoma, is approximately . In 2009, the term

was established by the

United States Board on Geographic Names The United States Board on Geographic Names (BGN) is a Federal government of the United States, federal body operating under the United States Secretary of the Interior. The purpose of the board is to establish and maintain uniform usage of geogr ...

as the collective waters of Puget Sound, the Strait of Juan de Fuca, and the

Strait of Georgia The Strait of Georgia () or the Georgia Strait is an arm of the Salish Sea between Vancouver Island and the extreme southwestern mainland coast of British Columbia, Canada, and the extreme northwestern mainland coast of Washington, United Stat ...

. Sometimes the terms "Puget Sound" and "Puget Sound and adjacent waters" are used for not only Puget Sound proper but also for waters to the north, such as

Bellingham Bay Bellingham Bay is a bay of the Salish Sea located in Washington State in the United States. It is separated from the Strait of Georgia on the west by the Lummi Peninsula, Portage Island, and Lummi Island. It is bordered on the east by Bellingh ...

and the

San Juan Islands The San Juan Islands is 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, and form the core of ...

region. The term "Puget Sound" is used not just for the body of water but also the Puget Sound region centered on the sound. Major cities on the sound include

Seattle Seattle ( ) is the most populous city in the U.S. state of Washington and in the Pacific Northwest region of North America. With a population of 780,995 in 2024, it is the 18th-most populous city in the United States. The city is the cou ...

, Tacoma, Olympia, and Everett. Puget Sound is also the second-largest

estuary An estuary is a partially enclosed coastal body of brackish water with one or more rivers or streams flowing into it, and with a free connection to the open sea. Estuaries form a transition zone between river environments and maritime enviro ...

in the United States, after

Chesapeake Bay The Chesapeake Bay ( ) is the largest estuary in the United States. The bay is located in the Mid-Atlantic (United States), Mid-Atlantic region and is primarily separated from the Atlantic Ocean by the Delmarva Peninsula, including parts of the Ea ...

Maryland Maryland ( ) is a U.S. state, state in the Mid-Atlantic (United States), Mid-Atlantic region of the United States. It borders the states of Virginia to its south, West Virginia to its west, Pennsylvania to its north, and Delaware to its east ...

and

Virginia Virginia, officially the Commonwealth of Virginia, is a U.S. state, state in the Southeastern United States, Southeastern and Mid-Atlantic (United States), Mid-Atlantic regions of the United States between the East Coast of the United States ...

Names

In 1792,

George Vancouver Captain (Royal Navy), Captain George Vancouver (; 22 June 1757 – 10 May 1798) was a Royal Navy officer and explorer best known for leading the Vancouver Expedition, which explored and charted North America's northwestern West Coast of the Uni ...

gave the name "Puget's Sound" to the waters south of the Tacoma Narrows, in honor of

Peter Puget Peter Puget (1765 – 31 October 1822) was an officer in the Royal Navy, best known for his exploration of Puget Sound, which is named for him. Midshipman Puget Puget's ancestors had fled France for Britain during Louis XIV's persecution of the ...

, a

Huguenot The Huguenots ( , ; ) are a Religious denomination, religious group of French people, French Protestants who held to the Reformed (Calvinist) tradition of Protestantism. The term, which may be derived from the name of a Swiss political leader, ...

lieutenant accompanying him on the

Vancouver Expedition The Vancouver Expedition (1791–1795) was a four-and-a-half-year voyage of exploration and diplomacy, commanded by Captain George Vancouver of the Royal Navy. The British expedition circumnavigated the globe and made contact with five continen ...

. This name later came to be used for the waters north of Tacoma Narrows as well. An alternative term for Puget Sound, used by a number of Native Americans and environmental groups, is Whulge (or Whulj), an

anglicization Anglicisation or anglicization is a form of cultural assimilation whereby something non-English becomes assimilated into or influenced by the culture of England. It can be sociocultural, in which a non-English place adopts the English languag ...

of the Lushootseed name for Puget Sound, , which literally means "sea, salt water, ocean, or sound". The name for the Lushootseed language, , is derived from the root word , an alternative name for Puget Sound.

Definitions

The

USGS The United States Geological Survey (USGS), founded as the Geological Survey, is an government agency, agency of the United States Department of the Interior, U.S. Department of the Interior whose work spans the disciplines of biology, geograp ...

defines Puget Sound as all the waters south of three entrances from the

. The main entrance at Admiralty Inlet is defined as a line between Point Wilson on the

Olympic Peninsula The Olympic Peninsula is a large peninsula in Western Washington that lies across Puget Sound from Seattle, and contains Olympic National Park. It is bounded on the west by the Pacific Ocean, the north by the Strait of Juan de Fuca, and the ...

, and Point Partridge on

. The second entrance is at

along a line from West Point on Whidbey Island, to Deception Island, then to Rosario Head on Fidalgo Island. The third entrance is at the south end of the Swinomish Channel, which connects Skagit Bay and

Padilla Bay Padilla Bay is a bay located in the U.S. state of Washington (state), Washington, between the San Juan Islands and the mainland. Fidalgo Island and Guemes Island lie to the west of Padilla Bay. Guemes Channel, between the islands, connects Padil ...

. Under this definition, Puget Sound includes the waters of

, Padilla Bay, the waters of the

or anything farther north. Another definition, given by

NOAA The National Oceanic and Atmospheric Administration (NOAA ) is an American scientific and regulatory agency charged with forecasting weather, monitoring oceanic and atmospheric conditions, charting the seas, conducting deep-sea exploratio ...

, subdivides Puget Sound into five basins or regions. Four of these (including South Puget Sound) correspond to areas within the USGS definition, but the fifth, called "Northern Puget Sound" includes a large additional region. It is defined as bounded to the north by the international boundary with Canada, and to the west by a line running north from the mouth of the Sekiu River on the Olympic Peninsula. Under this definition, significant parts of the

and the

are included in Puget Sound, with the international boundary marking an abrupt and hydrologically arbitrary limit. According to Arthur Kruckeberg, the term "Puget Sound" is sometimes used for waters north of Admiralty Inlet and Deception Pass, especially for areas along the north coast of Washington and the San Juan Islands, essentially equivalent to NOAA's "Northern Puget Sound" subdivision described above. Kruckeberg uses the term "Puget Sound and adjacent waters". Kruckeberg's 1991 text, however, does not reflect the 2009 decision of the

to use the term

to refer to the greater maritime environment.

Geology

Continental

ice sheet In glaciology, an ice sheet, also known as a continental glacier, is a mass of glacier, glacial ice that covers surrounding terrain and is greater than . The only current ice sheets are the Antarctic ice sheet and the Greenland ice sheet. Ice s ...

s have repeatedly advanced and retreated from the Puget Sound region. The most recent

glacial period A glacial period (alternatively glacial or glaciation) is an interval of time (thousands of years) within an ice age that is marked by colder temperatures and glacier advances. Interglacials, on the other hand, are periods of warmer climate betw ...

, called the Fraser Glaciation, had three phases, or stades. During the third, or Vashon Glaciation, a lobe of the Cordilleran Ice Sheet, called the Puget Lobe, spread south about 15,000 years ago, covering the Puget Sound region with an ice sheet about thick near

, and nearly at the present Canada-U.S. border. Since each new advance and retreat of ice erodes away much of the evidence of previous ice ages, the most recent Vashon phase has left the clearest imprint on the land. At its maximum extent the Vashon ice sheet extended south of Olympia to near Tenino, and covered the lowlands between the Olympic and Cascade mountain ranges. About 14,000 years ago the ice began to retreat. By 11,000 years ago it survived only north of the Canada–US border. The melting retreat of the Vashon Glaciation eroded the land, creating a drumlin field of hundreds of aligned drumlin hills.

Lake Washington Lake Washington () is a large freshwater lake adjacent to the city of Seattle, Washington, United States. It is the largest lake in King County, Washington, King County and the second largest natural lake in the state of Washington (state), Was ...

and Lake Sammamish (which are ribbon lakes),

Hood Canal Hood Canal is a fjord-like body of water that lies south of Admiralty Inlet in Washington State that some consider to be the western lobe and one of the five main basins of Puget Sound.glacial till image:Geschiebemergel.JPG, Closeup of glacial till. Note that the larger grains (pebbles and gravel) in the till are completely surrounded by the matrix of finer material (silt and sand), and this characteristic, known as ''matrix support'', is d ...

were deposited throughout the Puget Sound region. The soils of the region, less than ten thousand years old, are still characterized as immature. As the Vashon glacier receded a series of proglacial lakes formed, filling the main trough of Puget Sound and inundating the southern lowlands.

Glacial Lake Russell During the Vashon Glaciation a series of lakes formed along the southern margin of the Cordilleran Ice Cap. In the Puget Sound depression, a series of lakes developed, of which Lake Russell was the largest and the longest lasting. Early Lake Russ ...

was the first such large recessional lake. From the vicinity of Seattle in the north the lake extended south to the Black Hills, where it drained south into the Chehalis River. Sediments from Lake Russell form the blue-gray clay identified as the Lawton Clay. The second major recessional lake was Glacial Lake Bretz. It also drained to the Chehalis River until the , in the northeast

, melted, allowing the lake's water to rapidly drain north into the marine waters of the Strait of Juan de Fuca, which was rising as the ice sheet retreated. As icebergs calved off the toe of the glacier, their embedded gravels and boulders were deposited in the chaotic mix of unsorted

till image:Geschiebemergel.JPG, Closeup of glacial till. Note that the larger grains (pebbles and gravel) in the till are completely surrounded by the matrix of finer material (silt and sand), and this characteristic, known as ''matrix support'', is d ...

geologists call ''glaciomarine drift.'' Many beaches about the Sound display

glacial erratic A glacial erratic is a glacially deposited rock (geology), rock differing from the type of country rock (geology), rock native to the area in which it rests. Erratics, which take their name from the Latin word ' ("to wander"), are carried by gla ...

s, rendered more prominent than those in coastal woodland solely by their exposed position; submerged glacial erratics sometimes cause hazards to navigation. The sheer weight of glacial-age ice depressed the landforms, which experienced

post-glacial rebound Post-glacial rebound (also called isostatic rebound or crustal rebound) is the rise of land masses after the removal of the huge weight of ice sheets during the last glacial period, which had caused isostatic depression. Post-glacial rebound an ...

after the ice sheets had retreated. Because the rate of rebound was not synchronous with the post-ice age rise in sea levels, the bed of what is now Puget Sound filled alternately with fresh and with sea water. The upper level of the lake-sediment Lawton Clay now lies about above sea level. Seattle seen from Ferry on Puget Sound

The Puget Sound system consists of four deep basins connected by shallower sills. The four basins are

Hood Canal Hood Canal is a fjord-like body of water that lies south of Admiralty Inlet in Washington State that some consider to be the western lobe and one of the five main basins of Puget Sound.Kitsap Peninsula, Whidbey Basin, east of Whidbey Island, South Sound, south of the Tacoma Narrows, and the Main Basin, which is further subdivided into Admiralty Inlet and the Central Basin. Puget Sound's sills, a kind of submarine

terminal moraine A terminal moraine, also called an end moraine, is a type of moraine that forms at the terminal (edge) of a glacier, marking its maximum advance. At this point, debris that has accumulated by plucking and abrasion, has been pushed by the front e ...

, separate the basins from one another, and Puget Sound from the Strait of Juan de Fuca. Three sills are particularly significant—the one at Admiralty Inlet which checks the flow of water between the Strait of Juan de Fuca and Puget Sound, the one at the entrance to Hood Canal (about below the surface), and the one at the Tacoma Narrows (about ). Other sills that present less of a barrier include the ones at Blake Island, Agate Pass, Rich Passage, and Hammersley Inlet. The depth of the basins is a result of the Sound being part of the Cascadia subduction zone, where the

terrane In geology, a terrane (; in full, a tectonostratigraphic terrane) is a crust fragment formed on a tectonic plate (or broken off from it) and accreted or " sutured" to crust lying on another plate. The crustal block or fragment preserves its d ...

s accreted at the edge of the Juan de Fuca Plate are being subducted under the North American Plate. There has not been a major subduction zone earthquake here since the

magnitude Magnitude may refer to: Mathematics *Euclidean vector, a quantity defined by both its magnitude and its direction *Magnitude (mathematics), the relative size of an object *Norm (mathematics), a term for the size or length of a vector *Order of ...

nine Cascadia earthquake; according to

Japan Japan is an island country in East Asia. Located in the Pacific Ocean off the northeast coast of the Asia, Asian mainland, it is bordered on the west by the Sea of Japan and extends from the Sea of Okhotsk in the north to the East China Sea ...

ese records, it occurred on January 26, 1700. Lesser Puget Sound

earthquake An earthquakealso called a quake, tremor, or tembloris the shaking of the Earth's surface resulting from a sudden release of energy in the lithosphere that creates seismic waves. Earthquakes can range in intensity, from those so weak they ...

s with shallow

epicenter The epicenter (), epicentre, or epicentrum in seismology is the point on the Earth's surface directly above a hypocenter or focus, the point where an earthquake or an underground explosion originates. Determination The primary purpose of a ...

s, caused by the fracturing of stressed oceanic rocks as they are subducted, still cause great damage. The Seattle Fault cuts across Puget Sound, crossing the southern tip of Bainbridge Island and under

Elliott Bay Elliott Bay is a part of the Central Basin region of Puget Sound. It is in the U.S. state of Washington, extending southeastward between West Point in the north and Alki Point in the south. Seattle was founded on this body of water in the 1850s ...

. To the south, the existence of a second fault, the Tacoma Fault, has buckled the intervening strata in the Seattle Uplift. Typical Puget Sound profiles of dense glacial till overlying permeable glacial outwash of gravels above an impermeable bed of silty clay may become unstable after periods of unusually wet weather and slump in landslides.

Hydrology

The

United States Geological Survey The United States Geological Survey (USGS), founded as the Geological Survey, is an agency of the U.S. Department of the Interior whose work spans the disciplines of biology, geography, geology, and hydrology. The agency was founded on Mar ...

(USGS) defines Puget Sound as a bay with numerous channels and branches; more specifically, it is a

fjord In physical geography, a fjord (also spelled fiord in New Zealand English; ) is a long, narrow sea inlet with steep sides or cliffs, created by a glacier. Fjords exist on the coasts of Antarctica, the Arctic, and surrounding landmasses of the n ...

system of flooded glacial valleys. Puget Sound is part of a larger physiographic structure termed the Puget Trough, which is a physiographic section of the larger

Pacific Border province The Pacific Border province is a physiographic province of the Physiographic regions of the world physical geography system. Description The Pacific Border province encompasses most of the North American West Coast of the United States, Pacifi ...

, which in turn is part of the larger Pacific Mountain System. Puget Sound is a large salt water

, or system of many estuaries, fed by highly seasonal freshwater from the Olympic and Cascade Mountain watersheds. The mean annual river discharge into Puget Sound is , with a monthly average maximum of about and minimum of about . Puget Sound's shoreline is long, encompassing a water area of and a total volume of at mean high water. The average volume of water flowing in and out of Puget Sound during each tide is . The maximum tidal currents, in the range of 9 to 10

knots A knot is a fastening in rope or interwoven lines. Knot or knots may also refer to: Other common meanings * Knot (unit), of speed * Knot (wood), a timber imperfection Arts, entertainment, and media Films * ''Knots'' (film), a 2004 film * ''Kn ...

, occurs at Deception Pass. Water flow through Deception Pass is approximately equal to 2% of the total tidal exchange between Puget Sound and the Strait of Juan de Fuca. The size of Puget Sound's watershed is . ArcExplorer GIS data viewer. "Northern Puget Sound" is frequently considered part of the Puget Sound watershed, which enlarges its size to . The

uses the name "Puget Sound" for its hydrologic unit subregion 1711, which includes areas draining to Puget Sound proper as well as the Strait of Juan de Fuca, the Strait of Georgia, and the

Fraser River The Fraser River () is the longest river within British Columbia, Canada, rising at Fraser Pass near Blackrock Mountain (Canada), Blackrock Mountain in the Rocky Mountains and flowing for , into the Strait of Georgia just south of the City of V ...

. Significant rivers that drain to "Northern Puget Sound" include the Nooksack,

Dungeness Dungeness (, ) is a headland on the coast of Kent, England, formed largely of a shingle beach in the form of a cuspate foreland. It shelters a large area of low-lying land, Romney Marsh. Dungeness spans Dungeness Nuclear Power Station, the ham ...

, and Elwha Rivers. The Nooksack empties into Bellingham Bay, the Dungeness and Elwha into the Strait of Juan de Fuca. The Chilliwack River flows north to the Fraser River in Canada.

Tide Tides are the rise and fall of sea levels caused by the combined effects of the gravitational forces exerted by the Moon (and to a much lesser extent, the Sun) and are also caused by the Earth and Moon orbiting one another. Tide tables ...

s in Puget Sound are of the mixed type with two high and two low tides each tidal day. These are called Higher High Water (HHW), Lower Low Water (LLW), Lower High Water (LHW), and Higher Low Water (HLW). The configuration of basins, sills, and interconnections cause the

tidal range Tidal range is the difference in height between high tide and low tide. Tides are the rise and fall of sea levels caused by gravitational forces exerted by the Moon and Sun, by Earth's rotation and by centrifugal force caused by Earth's prog ...

to increase within Puget Sound. The difference in height between the Higher High Water and the Lower Low Water averages about at Port Townsend on Admiralty Inlet, but increases to about at Olympia, the southern end of Puget Sound. Puget Sound is generally accepted as the start of the Inside Passage.

Flora and fauna

Important marine flora of Puget Sound include eelgrass ('' Zostera marina'') and various

kelp Kelps are large brown algae or seaweeds that make up the order (biology), order Laminariales. There are about 30 different genus, genera. Despite its appearance and use of photosynthesis in chloroplasts, kelp is technically not a plant but a str ...

, important kelps include canopy forming bull kelp ('' Nereocystis luetkeana''). and edible kelps like kombu (''

Saccharina latissima ''Saccharina latissima'' is a brown alga (class Phaeophyceae), of the Family (biology), family Laminariaceae. It is known by the common names sugar kelp, sea belt, and Devil's apron, and is one of the species known to Japanese cuisine as kombu. I ...

) Among the marine mammals species found in Puget Sound are harbor seals (''Phoca vitulina'').

Orca The orca (''Orcinus orca''), or killer whale, is a toothed whale and the largest member of the oceanic dolphin family. The only extant species in the genus '' Orcinus'', it is recognizable by its black-and-white-patterned body. A cosmopol ...

(''Orcinus orca''), or "killer whales" are famous throughout the Sound, and are a large tourist attraction. Although orca are sometimes seen in Puget Sound proper they are far more prevalent around the

north of Puget Sound. Many fish species occur in Puget Sound. The various

salmonid Salmonidae (, ) is a family of ray-finned fish, the only extant member of the suborder Salmonoidei, consisting of 11 extant genera and over 200 species collectively known as "salmonids" or "salmonoids". The family includes salmon (both Atlantic a ...

species, including

salmon Salmon (; : salmon) are any of several list of commercially important fish species, commercially important species of euryhaline ray-finned fish from the genera ''Salmo'' and ''Oncorhynchus'' of the family (biology), family Salmonidae, native ...

trout Trout (: trout) is a generic common name for numerous species of carnivorous freshwater ray-finned fishes belonging to the genera '' Oncorhynchus'', ''Salmo'' and ''Salvelinus'', all of which are members of the subfamily Salmoninae in the ...

, and char are particularly well-known and studied. Salmonid species of Puget Sound include

chinook salmon The Chinook salmon (''Oncorhynchus tshawytscha'') is the largest and most valuable species of Oncorhynchus, Pacific salmon. Its common name is derived from the Chinookan peoples. Other vernacular names for the species include king salmon, quinn ...

(''Oncorhynchus tshawytscha''),

chum salmon The chum salmon (''Oncorhynchus keta''), also known as dog salmon or keta salmon, is a species of anadromous salmonid fish from the genus ''Oncorhynchus'' (Pacific salmon) native to the coastal rivers of the North Pacific and the Beringian Arctic ...

(''O. keta''),

coho salmon The coho salmon (''Oncorhynchus kisutch;'' Karuk: achvuun) is a species of anadromous fish in the salmon family (biology), family and one of the five Pacific salmon species. Coho salmon are also known as silver salmon (or "silvers") and is often ...

(''O. kisutch''), pink salmon (''O. gorbuscha''), sockeye salmon (''O. nerka''), sea-run

coastal cutthroat trout The coastal cutthroat trout (''Oncorhynchus clarkii'', sometimes referred as ''Oncorhynchus clarkii clarkii''), also known as the sea-run cutthroat trout, blue-back trout or harvest trout, is one of the four speciesTrotter, Patrick; Bisson, Pete ...

(''O. clarki clarki''),

steelhead Steelhead, or occasionally steelhead trout, is the Fish migration#Classification, anadromous form of the coastal rainbow trout or Columbia River redband trout (''O. m. gairdneri'', also called redband steelhead). Steelhead are native to cold-wa ...

(''O. mykiss irideus''), sea-run bull trout (''Salvelinus confluentus''), and Dolly Varden trout (''Salvelinus malma malma''). Oncorhynchus nerka

Lake Washington Ship Canal Fish Ladder pamphlet - ocean phase Steelhead

Common

forage fish Forage fish, also called prey fish or bait fish, are small pelagic fish that feed on planktons (i.e. planktivores) and other small aquatic organisms (e.g. krill). They are in turn preyed upon by various predators including larger fish, seabirds ...

es found in Puget Sound include Pacific herring (''Clupea pallasii''), surf smelt (''Hypomesus pretiosus''), and Pacific sand lance (''Ammodytes hexapterus''). Important benthopelagic fish of Puget Sound include North Pacific hake (''Merluccius productus''), Pacific cod (''Gadus macrocephalus''), walleye/Alaska pollock (''Theragra chalcogramma''), and the

spiny dogfish The spiny dogfish (''Squalus acanthias''), spurdog, mud shark, or piked dogfish is one of the best known species of the Squalidae (dogfish) family of sharks, which is part of the Squaliformes order. While these common names may apply to several ...

(''Squalus acanthias''). Lots of other notable groundfish exist in Puget Sound, such the lingcod (''Ophiodon elongatus'') and other greenlings, cabezon (''Scorpaenichthys marmoratus'') and other sculpins'','' and the Pacific halibut (''Hippoglossus stenolepis'') along with other

flatfish A flatfish is a member of the Ray-finned fish, ray-finned demersal fish Order (biology), suborder Pleuronectoidei, also called the Heterosomata. In many species, both eyes lie on one side of the head, one or the other migrating through or around ...

such as the California halibut (''Paralichthys californicus'',) soles, and sanddabs. There are about 28 species of Sebastidae (rockfish), of many types, found in Puget Sound. Among those of special interest are copper rockfish (''Sebastes caurinus''), quillback rockfish (''S. maliger''), black rockfish (''S. melanops''), yelloweye rockfish (''S. ruberrimus''), bocaccio rockfish (''S. paucispinis''), canary rockfish (''S. pinniger''), and Puget Sound rockfish (''S. emphaeus''). Interestingly, hybridization has occurred between some of these rockfish, in the case of between the quillback, copper, and

brown Brown is a color. It can be considered a composite color, but it is mainly a darker shade of orange. In the CMYK color model used in printing and painting, brown is usually made by combining the colors Orange (colour), orange and black. In the ...

(''S.'' ''auriculatus.'') Some rockfish, like the bocaccio and vermillion (''S. miniatus,'') have a

distinct population segment {{no footnotes, date=February 2018 A distinct population segment (DPS) is the smallest division of a taxonomic species permitted to be protected under the U.S. Endangered Species Act. ''Species'', as defined in the Act for listing purposes, is a ...

in the sound, which are at risk of

overfishing Overfishing is the removal of a species of fish (i.e. fishing) from a body of water at a rate greater than that the species can replenish its population naturally (i.e. the overexploitation of the fishery's existing Fish stocks, fish stock), resu ...

. Many other fish species occur in Puget Sound, such as

sturgeon Sturgeon (from Old English ultimately from Proto-Indo-European language, Proto-Indo-European *''str̥(Hx)yón''-) is the common name for the 27 species of fish belonging to the family Acipenseridae. The earliest sturgeon fossils date to the ...

lamprey Lampreys (sometimes inaccurately called lamprey eels) are a group of Agnatha, jawless fish comprising the order (biology), order Petromyzontiformes , sole order in the Class (biology), class Petromyzontida. The adult lamprey is characterize ...

s, and various cartilaginous like fish

shark Sharks are a group of elasmobranch cartilaginous fish characterized by a ribless endoskeleton, dermal denticles, five to seven gill slits on each side, and pectoral fins that are not fused to the head. Modern sharks are classified within the ...

s, chimeras, rays, and skates. Puget Sound is home to numerous species of marine

invertebrate Invertebrates are animals that neither develop nor retain a vertebral column (commonly known as a ''spine'' or ''backbone''), which evolved from the notochord. It is a paraphyletic grouping including all animals excluding the chordata, chordate s ...

s, including

sponge Sponges or sea sponges are primarily marine invertebrates of the animal phylum Porifera (; meaning 'pore bearer'), a basal clade and a sister taxon of the diploblasts. They are sessile filter feeders that are bound to the seabed, and a ...

sea anemone Sea anemones ( ) are a group of predation, predatory marine invertebrates constituting the order (biology), order Actiniaria. Because of their colourful appearance, they are named after the ''Anemone'', a terrestrial flowering plant. Sea anemone ...

chiton Chitons () are marine molluscs of varying size in the class Polyplacophora ( ), formerly known as Amphineura. About 940 extant and 430 fossil species are recognized. They are also sometimes known as sea cradles or coat-of-mail shells or suck ...

clam Clam is a common name for several kinds of bivalve mollusc. The word is often applied only to those that are deemed edible and live as infauna, spending most of their lives halfway buried in the sand of the sea floor or riverbeds. Clams h ...

sea snail Sea snails are slow-moving marine (ocean), marine gastropod Mollusca, molluscs, usually with visible external shells, such as whelk or abalone. They share the Taxonomic classification, taxonomic class Gastropoda with slugs, which are distinguishe ...

limpet Limpets are a group of aquatic snails with a conical gastropod shell, shell shape (patelliform) and a strong, muscular foot. This general category of conical shell is known as "patelliform" (dish-shaped). Existing within the class Gastropoda, ...

crab Crabs are decapod crustaceans of the infraorder Brachyura (meaning "short tailed" in Greek language, Greek), which typically have a very short projecting tail-like abdomen#Arthropoda, abdomen, usually hidden entirely under the Thorax (arthropo ...

barnacle Barnacles are arthropods of the subclass (taxonomy), subclass Cirripedia in the subphylum Crustacean, Crustacea. They are related to crabs and lobsters, with similar Nauplius (larva), nauplius larvae. Barnacles are exclusively marine invertebra ...

starfish Starfish or sea stars are Star polygon, star-shaped echinoderms belonging to the class (biology), class Asteroidea (). Common usage frequently finds these names being also applied to brittle star, ophiuroids, which are correctly referred to ...

sea urchin Sea urchins or urchins () are echinoderms in the class (biology), class Echinoidea. About 950 species live on the seabed, inhabiting all oceans and depth zones from the intertidal zone to deep seas of . They typically have a globular body cove ...

s, and sand dollars. Dungeness crabs (''Metacarcinus magister'') occur throughout Washington waters, including Puget Sound. Many

bivalve Bivalvia () or bivalves, in previous centuries referred to as the Lamellibranchiata and Pelecypoda, is a class (biology), class of aquatic animal, aquatic molluscs (marine and freshwater) that have laterally compressed soft bodies enclosed b ...

s occur in Puget Sound, such as

Pacific oyster The Pacific oyster, Japanese oyster, or Miyagi oyster (''Magallana gigas'') is an oyster native to the Pacific coast of Asia. It has become an introduced species in North America, Australia, Europe, and New Zealand. Etymology The genus ''Magal ...

s (''Crassostrea gigas'') and geoduck clams (''Panopea generosa''). The Olympia oyster (''Ostrea lurida''), once common in Puget Sound, was depleted by human activities during the 20th century. There are ongoing efforts to restore Olympia oysters in Puget Sound. In 1967, an initial scuba survey estimated that were "about 110 million pounds of geoducks" (pronounced "gooey ducks") situated in Puget Sound's sediments. Also known as "king clam," geoducks are considered to be a delicacy in Asian countries. There are many

seabird Seabirds (also known as marine birds) are birds that are adaptation, adapted to life within the marine ecosystem, marine environment. While seabirds vary greatly in lifestyle, behaviour and physiology, they often exhibit striking convergent ...

species in Puget Sound. Among these are

grebe Grebes () are aquatic diving birds in the order (biology), order Podicipediformes (). Grebes are widely distributed freshwater birds, with some species also found in sea, marine habitats during Bird migration, migration and winter. Most grebes f ...

s such as the western grebe (''Aechmophorus occidentalis'');

loon Loons (North American English) or divers (British English, British / Irish English) are a group of aquatic birds found in much of North America and northern Eurasia. All living species of loons are members of the genus ''Gavia'', family (biolog ...

s such as the

common loon The common loon or great northern diver (''Gavia immer'') is a large member of the loon, or diver, family (biology), family of birds. Reproduction, Breeding adults have a plumage that includes a broad black head and neck with a greenish, purpli ...

(''Gavia immer'');

auk Auks or alcids are birds of the family Alcidae in the order Charadriiformes. The alcid family includes the Uria, murres, guillemots, Aethia, auklets, puffins, and Brachyramphus, murrelets. The family contains 25 extant or recently extinct speci ...

s such as the pigeon guillemot (''Cepphus columba''), rhinoceros auklet (''Cerorhinca monocerata''),

common murre The common murre or common guillemot (''Uria aalge'') is a large auk. It has a Subarctic, circumpolar distribution, occurring in low-Arctic and boreal waters in the North Atlantic and North Pacific. It spends most of its time at sea, only coming ...

(''Uria aalge''), and marbled murrelet (''Brachyramphus marmoratus''); the brant goose (''Branta bernicla''); sea ducks such as the

long-tailed duck The long-tailed duck (''Clangula hyemalis'') or coween, is a medium-sized sea duck that breeds in the tundra and taiga regions of the arctic and winters along the northern coastlines of the Atlantic and Pacific Oceans. It is the only member of ...

(''Clangula hyemalis''),

harlequin duck The harlequin duck (''Histrionicus histrionicus'') is a small sea duck. It takes its name from Harlequin (Italian ''Arlecchino'', French ''Arlequin''), a colourfully dressed character in Commedia dell'arte. The species name comes from the Latin ...

(''Histrionicus histrionicus''), and

surf scoter The surf scoter (''Melanitta perspicillata'') is a large sea duck native to North America. Adult males are almost entirely black with characteristic white patches on the forehead and the nape and adult females are slightly smaller and browner. S ...

(''Melanitta perspicillata''); and

cormorant Phalacrocoracidae is a family of approximately 40 species of aquatic birds commonly known as cormorants and shags. Several different classifications of the family have been proposed, but in 2021 the International Ornithologists' Union (IOU) ado ...

s such as the double-crested cormorant (''Phalacrocorax auritus''). Puget Sound is home to a non-migratory and marine-oriented subspecies of

great blue heron The great blue heron (''Ardea herodias'') is a large wading bird in the heron family Ardeidae, common near the shores of open water and in wetlands over most of North and Central America, as well as far northwestern South America, the Caribbea ...

s (''Ardea herodias fannini'').

Bald eagle The bald eagle (''Haliaeetus leucocephalus'') is a bird of prey found in North America. A sea eagle, it has two known subspecies and forms a species pair with the white-tailed eagle (''Haliaeetus albicilla''), which occupies the same niche ...

s (''Haliaeetus leucocephalus'') occur in relative high densities in the Puget Sound region.

History

Puget Sound has been home to many Indigenous peoples, such as the Lushootseed-speaking peoples, as well as the Twana, Chimakum, and Klallam, for millennia. The earliest known presence of Indigenous inhabitants in the Puget Sound region is between 14,000 BCE to 6,000 BCE. Dispatched in an attempt to locate the fabled

Northwest Passage The Northwest Passage (NWP) is the sea lane between the Atlantic and Pacific oceans through the Arctic Ocean, near the northern coast of North America via waterways through the Arctic Archipelago of Canada. The eastern route along the Arctic ...

, British Royal Navy captain

anchored on May 19, 1792, on the shores of

, explored Puget Sound, and claimed it for

Great Britain Great Britain is an island in the North Atlantic Ocean off the north-west coast of continental Europe, consisting of the countries England, Scotland, and Wales. With an area of , it is the largest of the British Isles, the List of European ...

on June 4 the same year, naming it for one of his officers, Lieutenant Peter Puget. He further named the entire region; ''New Georgia'', after King

George III George III (George William Frederick; 4 June 173829 January 1820) was King of Great Britain and King of Ireland, Ireland from 25 October 1760 until his death in 1820. The Acts of Union 1800 unified Kingdom of Great Britain, Great Britain and ...

. After 1818 Britain and the United States, which both claimed the

Oregon Country Oregon Country was a large region of the Pacific Northwest of North America that was subject to a long Oregon boundary dispute, dispute between the United Kingdom and the United States in the early 19th century. The area, which had been demarcat ...

, agreed to "joint occupancy", deferring resolution of the

Oregon boundary dispute The Oregon boundary dispute or the Oregon Question was a 19th-century territorial dispute over the political division of the Pacific Northwest of North America between several nations that had competing territorial and commercial aspirations in ...

. The Puget Sound Agricultural Company was formed by HBC to encourage settlement. Pursuant to the 1846

Oregon Treaty The Oregon Treaty was a treaty between the United Kingdom and the United States that was signed on June 15, 1846, in Washington, D.C. The treaty brought an end to the Oregon boundary dispute by settling competing American and British claims to ...

; Puget Sound which was part of the disputed region became US territory. American maritime fur traders visited Puget Sound in the early 19th century. An

Hudson's Bay Company The Hudson's Bay Company (HBC), originally the Governor and Company of Adventurers of England Trading Into Hudson’s Bay, is a Canadian holding company of department stores, and the oldest corporation in North America. It was the owner of the ...

expedition led by James McMillan in late 1824 was first non-Indigenous group to enter Puget Sound since George Vancouver in 1792. The expedition went on to reach the

, first again to reach the lower Fraser since Fraser himself in 1808. The first non-Indigenous settlement in the Puget Sound area was

Fort Nisqually Fort Nisqually was an important fur trade, fur trading and farming post of the Hudson's Bay Company in the Puget Sound area, part of the Hudson's Bay Company's Columbia Department. It was located in what is now DuPont, Washington. Today it is a ...

, a fur trade post of the

(HBC) built in 1833.

was part of the HBC's

Columbia District The Columbia District was a fur-trading district in the Pacific Northwest region of North America, in both the United States and British North America in the 19th century. Much of its territory overlapped with the temporarily jointly occupi ...

, headquartered at

Fort Vancouver Fort Vancouver was a 19th-century fur trading post built in the winter of 1824–1825. It was the headquarters of the Hudson's Bay Company's Columbia Department, located in the Pacific Northwest. Named for Captain George Vancouver, the fort was ...

. In 1838, the HBC's subsidy operation, the Puget Sound Agricultural Company was established in part to procure resources and trade, as well as to further establish British claim to the region. Missionaries J.P. Richmond and W.H. Wilson were attending Fort Nisqually for two years by 1840. British ships, such as the ''

Beaver Beavers (genus ''Castor'') are large, semiaquatic rodents of the Northern Hemisphere. There are two existing species: the North American beaver (''Castor canadensis'') and the Eurasian beaver (''C. fiber''). Beavers are the second-large ...

'', exported foodstuffs and provisions from Fort Nisqually, and would eventually export Puget Sound lumber, an industry that would soon outpace the dominant fur trading market and drive the early Puget Sound economy. The first organized American expedition took place under the helm of Commander

Charles Wilkes Charles Wilkes (April 3, 1798 – February 8, 1877) was an American naval officer, ship's captain, and List of explorers, explorer. He led the United States Exploring Expedition (1838–1842). During the American Civil War between 1861 and 1865 ...

, whose exploring party sailed up Puget Sound in 1841. The first permanent American settlement on Puget Sound was Tumwater, founded in 1845 by Americans who had come via the

Oregon Trail The Oregon Trail was a east–west, large-wheeled wagon route and Westward Expansion Trails, emigrant trail in North America that connected the Missouri River to valleys in Oregon Territory. The eastern part of the Oregon Trail crossed what ...

. The decision to settle north of the Columbia River was made in part because one of the settlers, George Washington Bush, was considered

black Black is a color that results from the absence or complete absorption of visible light. It is an achromatic color, without chroma, like white and grey. It is often used symbolically or figuratively to represent darkness.Eva Heller, ''P ...

and the

Provisional Government of Oregon The Provisional Government of Oregon was a popularly elected settler government created in the Oregon Country (1818-1846), in the Pacific Northwest region of the western portion of the continent of North America. Its formation had been advanced ...

banned the residency of mulattoes but did not actively enforce the restriction north of the river. In 1853

Washington Territory The Washington Territory was an organized incorporated territory of the United States that existed from March 2, 1853, until November 11, 1889, when the territory was admitted to the Union as the State of Washington. It was created from the ...

was formed from part of

Oregon Territory The Territory of Oregon was an organized incorporated territory of the United States that existed from August 14, 1848, until February 14, 1859, when the southwestern portion of the territory was admitted to the United States, Union as the Oreg ...

. In 1888 the

Northern Pacific Northern Pacific may refer to: * Northern Pacific Airways, an upcoming airline * Northern Pacific Field Hockey Conference, an NCAA Division I conference * Northern Pacific Hockey League, an American Tier III junior ice hockey league * Northern Paci ...

railroad line reached Puget Sound, linking the region to eastern states. Washington State was admitted to the union in 1889 as part of the

Enabling Act An enabling act is a piece of legislation by which a legislative body grants an entity which depends on it (for authorization or legitimacy) for the delegation of the legislative body's power to take certain actions. For example, enabling act ...

, and the regions borders have since remained unchanged.

Transportation

The Washington State Ferries (WSF) are a state-run ferry system that connects the larger islands of Puget Sound the Washington mainland, and the Olympic and Kitsap Peninsulas. Its vessels carry both passengers and vehicular traffic. The system averaged 24.3 million passengers in the 2010s and 17.2 in 2022 with the

COVID-19 pandemic The COVID-19 pandemic (also known as the coronavirus pandemic and COVID pandemic), caused by severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2), began with an disease outbreak, outbreak of COVID-19 in Wuhan, China, in December ...

. It is the largest ferry operator in the United States.

Environmental issues

Over the past 30 years, as the region's human population has increased, there has been a correlating decrease in various plant and animal species which inhabit Puget Sound. The decline has been seen in numerous populations including

, salmonids, bottom fish, marine birds,

harbor porpoise The harbour porpoise (''Phocoena phocoena'') is one of eight extant species of porpoise. It is one of the smallest species of cetacean. As its name implies, it stays close to coastal areas or river estuaries, and as such, is the most familiar ...

, and

orcas The orca (''Orcinus orca''), or killer whale, is a toothed whale and the largest member of the oceanic dolphin family. The only extant species in the genus '' Orcinus'', it is recognizable by its black-and-white-patterned body. A cosmopoli ...

. The decline is attributed to various issues, including human population growth, pollution, and climate change. Because of this population decline, there have been changes to the

fishery Fishery can mean either the enterprise of raising or harvesting fish and other aquatic life or, more commonly, the site where such enterprise takes place ( a.k.a., fishing grounds). Commercial fisheries include wild fisheries and fish far ...

practices, and an increase in petitioning to add species to the

Endangered Species Act The Endangered Species Act of 1973 (ESA; 16 U.S.C. § 1531 et seq.) is the primary law in the United States for protecting and conserving imperiled species. Designed to protect critically imperiled species from extinction as a "consequence of e ...

. There has also been an increase in recovery and management plans for many different area species. The causes of these environmental issues are toxic contamination,

eutrophication Eutrophication is a general term describing a process in which nutrients accumulate in a body of water, resulting in an increased growth of organisms that may deplete the oxygen in the water; ie. the process of too many plants growing on the s ...

(low oxygen due to excess nutrients), and near shore habitat changes. The Washington Department of Fisheries began an

artificial reef An artificial reef (AR) is a human-created freshwater or marine benthic structure. Typically built in areas with a generally featureless bottom to promote Marine biology#Reefs, marine life, it may be intended to control #Erosion prevention, erosio ...

construction program in 1975 to create habitats in Puget Sound for declining fish populations, particularly rockfish and lingcod. Some reefs used disposed vehicle

tire A tire (North American English) or tyre (Commonwealth English) is a ring-shaped component that surrounds a Rim (wheel), wheel's rim to transfer a vehicle's load from the axle through the wheel to the ground and to provide Traction (engineeri ...

s, tied together with

polypropylene Polypropylene (PP), also known as polypropene, is a thermoplastic polymer used in a wide variety of applications. It is produced via chain-growth polymerization from the monomer Propene, propylene. Polypropylene belongs to the group of polyolefin ...

rope, until they were phased out in 1982 in favor of less-expensive scrap concrete. The degraded rope allowed disposed tires to create obstructions that damage habitats and harm Puget Sound wildlife; the state government began removing the tire piles in late 2024 at Tolmie State Park. An estimated 100,000 tires remain in Puget Sound at 14 identified sites. On May 22, 1978, a valve was mistakenly opened aboard the submarine USS ''Puffer'', releasing up to 500 US gallons (1,900 L; 420 imp gal) of radioactive water into Puget Sound, during an overhaul in

drydock A dry dock (sometimes drydock or dry-dock) is a narrow basin or vessel that can be flooded to allow a load to be floated in, then drained to allow that load to come to rest on a dry platform. Dry docks are used for the construction, maintenance, ...

at Bremerton Naval Shipyard.

References

Sources

* *

External links

Names

Definitions

Geology

Hydrology

Flora and fauna

History

Transportation

Environmental issues

See also

References

Sources

Further reading

External links