Taxonomic Group	Name	Year	Invasion Status	Population Status	Vectors
Arthropoda-Insects	Aedes togoi*	1940	Definite	Established	Ballast Water, Cargo
Annelids-Polychaetes	Alitta succinea	1998	Definite	Established	Ballast Water, Discarded Bait, Hull Fouling
Fishes	Alosa sapidissima	1876	Definite	Established	Natural Dispersal
Crustaceans-Barnacles	Amphibalanus improvisus	1956	Definite	Established	Ballast Water, Hull Fouling, Oyster Accidental
Crustaceans-Amphipods	Ampithoe valida	1957	Definite	Established	Ballast Water, Hull Fouling, Oyster Accidental
Arthropoda-Insects	Anisolabis maritima	1920	Definite	Established	Cargo, Dry Ballast
Mollusks-Bivalves	Arcuatula senhousia	1959	Definite	Established	Oyster Accidental
Platyhelminthes	Austrobilharzia variglandis*	2003	Definite	Established	Oyster Accidental
Entoprocts	Barentsia benedeni	1998	Definite	Established	Hull Fouling, Oyster Accidental
Mollusks-Gastropods	Batillaria attramentaria	1924	Definite	Established	Oyster Accidental
Tunicates	Botrylloides violaceus	1998	Definite	Established	Hull Fouling, Oyster Accidental
Tunicates	Botryllus schlosseri	1998	Definite	Established	Hull Fouling, Oyster Accidental
Bryozoans	Bugula neritina	2007	Definite	Established	Hull Fouling
Bryozoans	Bugulina stolonifera	1998	Definite	Established	Hull Fouling
Algae	Campylaephora kondoi*	1995	Definite	Established	Ballast Water, Hull Fouling, Oyster Accidental
Crustaceans-Amphipods	Caprella mutica	1995	Definite	Established	Ballast Water, Hull Fouling, Oyster Accidental
Crustaceans-Amphipods	Caprella simia	2008	Definite	Established	Ballast Water, Hull Fouling
Crustaceans-Crabs	Carcinus maenas	1998	Definite	Established	Ballast Water, Discarded Bait, Natural Dispersal
Algae	Caulacanthus okamurae	1974	Definite	Established	Ballast Water, Hull Fouling, Oyster Accidental
Mollusks-Gastropods	Cecina manchurica	1961	Definite	Established	Oyster Accidental
Platyhelminthes	Cercaria batillariae*	2000	Definite	Established	Oyster Accidental
Algae	Chorda asiatica	1993	Definite	Established	Ballast Water, Hull Fouling, Oyster Accidental
Cnidarians-Hydrozoans	Cladonema radiatum	1988	Definite	Established	Ballast Water, Hull Fouling, Oyster Accidental
Annelids-Polychaetes	Clymenella torquata	1976	Definite	Established	Oyster Accidental
Cnidarians-Hydrozoans	Cordylophora caspia	1920	Definite	Established	Aquatic Plant Shipments, Fisheries Accidental (not Oyster), Hull Fouling, Oyster Accidental
Mollusks-Bivalves	Crassostrea virginica	1895	Definite	Established	Oyster Intentional
Mollusks-Gastropods	Crepidula convexa	1970	Definite	Established	Oyster Accidental
Mollusks-Gastropods	Crepidula fornicata	1931	Definite	Established	Oyster Accidental
Bryozoans	Cryptosula pallasiana	1970	Definite	Established	Hull Fouling, Oyster Accidental
Cnidarians-Anthozoans	Diadumene lineata	1909	Definite	Established	Hull Fouling, Oyster Accidental
Tunicates	Didemnum vexillum	2003	Definite	Established	Fisheries Accidental (not Oyster), Hull Fouling, Oyster Accidental
Tunicates	Diplosoma listerianum	1960	Definite	Established	Hull Fouling, Oyster Accidental
Cnidarians-Hydrozoans	Ectopleura crocea	1911	Definite	Established	Hull Fouling
Crustaceans-Amphipods	Eochelidium sp. A	1997	Definite	Established	Ballast Water
Algae	Gelidium vagum*	1984	Definite	Established	Ballast Water, Hull Fouling, Oyster Accidental
Algae	Gracilaria vermiculophylla	2006	Definite	Established	Ballast Water, Hull Fouling, Oyster Accidental
Crustaceans-Amphipods	Grandidierella japonica	1977	Definite	Established	Ballast Water, Hull Fouling, Oyster Accidental
Sponges	Halichondria bowerbanki*	2001	Definite	Established	Hull Fouling, Oyster Accidental
Mollusks-Gastropods	Haloa japonica	1985	Definite	Established	Ballast Water, Oyster Accidental
Annelids-Polychaetes	Hediste diadroma	2012	Definite	Established	Ballast Water, Hull Fouling
Annelids-Polychaetes	Heteromastus filiformis species complex	1966	Definite	Established	Ballast Water, Hull Fouling, Oyster Accidental
Platyhelminthes	Himasthla quissetensis*	2003	Definite	Established	Oyster Accidental
Annelids-Polychaetes	Hobsonia florida	1940	Definite	Established	Oyster Accidental
Sponges	Hymeniacidon perlevis*	2008	Definite	Established	Oyster Accidental
Crustaceans-Isopods	Ianiropsis serricaudis	2010	Definite	Established	Habitat Restoration, Oyster Accidental
Mollusks-Gastropods	Ilyanassa obsoleta	1952	Definite	Established	Oyster Accidental
Crustaceans-Amphipods	Incisocalliope derzhavini	1998	Definite	Established	Ballast Water, Hull Fouling
Crustaceans-Amphipods	Jassa marmorata	1990	Definite	Established	Ballast Water, Hull Fouling, Oyster Accidental
Platyhelminthes	Koinostylochus ostreophagus*	1953	Definite	Established	Oyster Accidental
Annelids-Oligochaetes	Limnodrilus monothecus*	1979	Definite	Established	Ballast Water, Dry Ballast, Hull Fouling, Oyster Accidental
Crustaceans-Isopods	Limnoria tripunctata	1961	Definite	Established	Hull Fouling, Oyster Accidental
Sponges	Lissodendoryx tylostyla*	2016	Definite	Established	Oyster Accidental
Algae	Lomentaria hakodatensis*	1959	Definite	Established	Ballast Water, Hull Fouling, Oyster Accidental
Mollusks-Bivalves	Lyrodus takanoshimensis	1981	Definite	Established	Oyster Accidental
Mollusks-Bivalves	Magallana gigas	1902	Definite	Established	Oyster Intentional
Algae	Mazzaella japonica*	2005	Definite	Established	Hull Fouling, Oyster Accidental
Crustaceans-Amphipods	Melita nitida	1976	Definite	Established	Ballast Water, Hull Fouling, Oyster Accidental
Tunicates	Molgula manhattensis	1998	Definite	Established	Hull Fouling
Crustaceans-Amphipods	Monocorophium acherusicum	1915	Definite	Established	Ballast Water, Hull Fouling, Oyster Accidental
Crustaceans-Amphipods	Monocorophium insidiosum	1915	Definite	Established	Ballast Water, Hull Fouling, Oyster Accidental
Mollusks-Bivalves	Mya arenaria	1888	Definite	Established	Fisheries Intentional
Mollusks-Gastropods	Myosotella myosotis	1936	Definite	Established	Cargo, Dry Ballast, Oyster Accidental
Crustaceans-Copepods	Mytilicola orientalis	1943	Definite	Established	Hull Fouling, Oyster Accidental
Mollusks-Bivalves	Mytilus galloprovincialis	1994	Definite	Established	Ballast Water, Fisheries Accidental (not Oyster), Hull Fouling, Natural Dispersal
Mollusks-Gastropods	Nassarius fraterculus	1959	Definite	Established	Oyster Accidental
Cnidarians-Anthozoans	Nematostella vectensis	1973	Definite	Established	Ballast Water, Hull Fouling, Oyster Accidental
Mollusks-Bivalves	Neotrapezium liratum	1924	Definite	Established	Oyster Accidental
Crustaceans-Cumaceans	Nippoleucon hinumensis	1998	Definite	Established	Ballast Water, Oyster Accidental
Mollusks-Bivalves	Nuttallia obscurata	1991	Definite	Established	Ballast Water
Mollusks-Gastropods	Ocinebrellus inornatus	1924	Definite	Established	Oyster Accidental
Crustaceans-Copepods	Oithona davisae	2012	Definite	Established	Ballast Water
Crustaceans-Isopods	Orthione griffenis	1995	Definite	Established	Ballast Water, Discarded Bait, Natural Dispersal
Mollusks-Bivalves	Petricolaria pholadiformis	1995	Definite	Established	Ballast Water, Oyster Accidental
Annelids-Polychaetes	Polydora cornuta	1932	Definite	Established	Ballast Water, Hull Fouling, Oyster Accidental
Annelids-Polychaetes	Proceraea okadai	2001	Definite	Established	Ballast Water, Hull Fouling
Annelids-Polychaetes	Pseudopolydora cf. kempi	1951	Definite	Established	Ballast Water, Oyster Accidental
Annelids-Polychaetes	Pseudopolydora paucibranchiata	2007	Definite	Established	None
Platyhelminthes	Rhabdocoela sp.*	1985	Definite	Established	Fisheries Accidental (not Oyster)
Mollusks-Bivalves	Ruditapes philippinarum	1924	Definite	Established	Oyster Accidental
Fishes	Salmo trutta*	1932	Definite	Established	Fisheries Intentional
Algae	Sargassum muticum	1944	Definite	Established	Oyster Accidental
Bryozoans	Schizoporella japonica	1927	Definite	Established	Oyster Accidental
Crustaceans-Tanaids	Sinelobus cf. stanfordi	1975	Definite	Established	Ballast Water, Hull Fouling
Annelids-Polychaetes	Streblospio benedicti	1994	Definite	Established	Ballast Water, Hull Fouling, Oyster Accidental
Tunicates	Styela clava	1995	Definite	Established	Hull Fouling
Mollusks-Bivalves	Teredo navalis	1963	Definite	Established	Hull Fouling
Protozoans	Trichodina sp.*	1985	Definite	Established	Fisheries Accidental (not Oyster)
Protozoans	Trochammina hadai*	1971	Definite	Established	Ballast Water, Oyster Accidental, Unknown Vector
Annelids-Oligochaetes	Tubificoides apectinatus*	1979	Definite	Established	Ballast Water, Dry Ballast, Hull Fouling, Oyster Accidental
Annelids-Oligochaetes	Tubificoides benedii*	1991	Definite	Established	Ballast Water, Dry Ballast, Hull Fouling, Oyster Accidental
Annelids-Oligochaetes	Tubificoides brownae*	None	Definite	Established	Ballast Water, Dry Ballast, Hull Fouling, Oyster Accidental
Annelids-Oligochaetes	Tubificoides diazi*	1984	Definite	Established	Ballast Water, Dry Ballast, Oyster Accidental
Annelids-Oligochaetes	Tubificoides wasselli*	1978	Definite	Established	Ballast Water, Dry Ballast, Oyster Accidental
Algae	Ulva australis	2010	Definite	Established	Ballast Water, Hull Fouling, Oyster Accidental
Mollusks-Gastropods	Urosalpinx cinerea	1929	Definite	Established	Oyster Accidental
Bryozoans	Watersipora n. sp.	2010	Definite	Established	Hull Fouling
Bryozoans	Watersipora subatra*	2002	Definite	Established	Ballast Water, Hull Fouling

* = Species summary still under review.

nep-iii (Alaskan panhandle to N. of Puget Sound) Summary