Taxonomic Group	Name	Year	Invasion Status	Population Status	Vectors
Arthropoda-Insects	Aedes togoi*	1940	Non-native	Established	Ballast Water, Cargo
Annelids-Polychaetes	Alitta succinea	1998	Non-native	Established	Ballast Water, Discarded Bait, Hull Fouling
Fishes	Alosa sapidissima	1876	Non-native	Established	Natural Dispersal
Fishes	Ambloplites rupestris*	1893	Non-native	Established	None
Fishes	Ameiurus nebulosus	None	Non-native	Established	None
Protozoans	Ammonia confertitesta*	2022	Non-native	Established	Ballast Water
Crustaceans-Barnacles	Amphibalanus improvisus	1956	Non-native	Established	Ballast Water, Hull Fouling, Oyster Accidental
Crustaceans-Amphipods	Ampithoe valida	1957	Non-native	Established	Ballast Water, Hull Fouling, Oyster Accidental
Arthropoda-Insects	Anisolabis maritima	1920	Non-native	Established	Cargo, Dry Ballast
Mollusks-Bivalves	Arcuatula senhousia	1959	Non-native	Established	Oyster Accidental
Platyhelminthes	Austrobilharzia variglandis*	2003	Non-native	Established	Oyster Accidental
Entoprocts	Barentsia benedeni	1998	Non-native	Established	Hull Fouling, Oyster Accidental
Mollusks-Gastropods	Batillaria attramentaria	1924	Non-native	Established	Oyster Accidental
Tunicates	Botrylloides violaceus	1998	Non-native	Established	Hull Fouling, Oyster Accidental
Tunicates	Botryllus schlosseri	1998	Non-native	Established	Hull Fouling, Oyster Accidental
Bryozoans	Bugula neritina	2007	Non-native	Established	Hull Fouling
Bryozoans	Bugulina stolonifera	1998	Non-native	Established	Hull Fouling
Crustaceans-Isopods	Caecidotea racovitzai	1997	Non-native	Established	None
Algae	Campylaephora kondoi*	1995	Non-native	Established	Ballast Water, Hull Fouling, Oyster Accidental
Crustaceans-Amphipods	Caprella mutica	1995	Non-native	Established	Ballast Water, Hull Fouling, Oyster Accidental
Crustaceans-Amphipods	Caprella simia	2008	Non-native	Established	Ballast Water, Hull Fouling
Crustaceans-Crabs	Carcinus maenas	1998	Non-native	Established	Ballast Water, Discarded Bait, Natural Dispersal
Algae	Caulacanthus okamurae	1974	Non-native	Established	Ballast Water, Hull Fouling, Oyster Accidental
Mollusks-Gastropods	Cecina manchurica	1961	Non-native	Established	Oyster Accidental
Platyhelminthes	Cercaria batillariae*	2000	Non-native	Established	Oyster Accidental
Crustaceans-Amphipods	Chelura terebrans	1960	Non-native	Established	None
Arthropoda-Insects	Chilacis typhae*	1997	Non-native	Established	None
Algae	Chorda asiatica	1993	Non-native	Established	Ballast Water, Hull Fouling, Oyster Accidental
Cnidarians-Hydrozoans	Cladonema radiatum	1988	Non-native	Established	Ballast Water, Hull Fouling, Oyster Accidental
Annelids-Polychaetes	Clymenella torquata	1976	Non-native	Established	Oyster Accidental
Mollusks-Bivalves	Corbicula fluminea	1960	Non-native	Established	None
Cnidarians-Hydrozoans	Cordylophora caspia	1920	Non-native	Established	Aquatic Plant Shipments, Fisheries Accidental (not Oyster), Hull Fouling, Oyster Accidental
Mollusks-Bivalves	Crassostrea virginica	1895	Non-native	Established	Oyster Intentional
Mollusks-Gastropods	Crepidula convexa	1970	Non-native	Established	Oyster Accidental
Mollusks-Gastropods	Crepidula fornicata	1931	Non-native	Established	Oyster Accidental
Bryozoans	Cryptosula pallasiana	1970	Non-native	Established	Hull Fouling, Oyster Accidental
Cnidarians-Anthozoans	Diadumene lineata	1909	Non-native	Established	Hull Fouling, Oyster Accidental
Tunicates	Didemnum vexillum	2003	Non-native	Established	Fisheries Accidental (not Oyster), Hull Fouling, Oyster Accidental
Tunicates	Diplosoma listerianum	1960	Non-native	Established	Hull Fouling, Oyster Accidental
Cnidarians-Hydrozoans	Ectopleura crocea	1911	Non-native	Established	Hull Fouling
Crustaceans-Amphipods	Eochelidium sp. A	1997	Non-native	Established	Ballast Water
Crustaceans-Copepods	Eurytemora carolleeae	1998	Non-native	Established	None
Algae	Fucus spiralis	1959	Non-native	Established	Hull Fouling, Oyster Accidental
Algae	Gelidium vagum*	1984	Non-native	Established	Ballast Water, Hull Fouling, Oyster Accidental
Algae	Gracilaria vermiculophylla	2006	Non-native	Established	Ballast Water, Hull Fouling, Oyster Accidental
Crustaceans-Amphipods	Grandidierella japonica	1977	Non-native	Established	Ballast Water, Hull Fouling, Oyster Accidental
Sponges	Halichondria bowerbanki*	2001	Non-native	Established	Hull Fouling, Oyster Accidental
Mollusks-Gastropods	Haloa japonica	1985	Non-native	Established	Ballast Water, Oyster Accidental
Crustaceans-Copepods	Harpacticella paradoxa	2000	Non-native	Established	None
Annelids-Polychaetes	Hediste diadroma	2012	Non-native	Established	Ballast Water, Hull Fouling
Annelids-Polychaetes	Heteromastus filiformis species complex	1966	Non-native	Established	Ballast Water, Hull Fouling, Oyster Accidental
Platyhelminthes	Himasthla quissetensis*	2003	Non-native	Established	Oyster Accidental
Annelids-Polychaetes	Hobsonia florida	1940	Non-native	Established	Oyster Accidental
Sponges	Hymeniacidon perlevis*	2008	Non-native	Established	Oyster Accidental
Crustaceans-Isopods	Ianiropsis serricaudis	2010	Non-native	Established	Habitat Restoration, Oyster Accidental
Mollusks-Gastropods	Ilyanassa obsoleta	1952	Non-native	Established	Oyster Accidental
Crustaceans-Amphipods	Incisocalliope derzhavini	1998	Non-native	Established	Ballast Water, Hull Fouling
Crustaceans-Amphipods	Jassa marmorata	1990	Non-native	Established	Ballast Water, Hull Fouling, Oyster Accidental
Platyhelminthes	Koinostylochus ostreophagus*	1953	Non-native	Established	Oyster Accidental
Mollusks-Bivalves	Limecola petalum	1996	Non-native	Established	None
Annelids-Oligochaetes	Limnodrilus monothecus*	1979	Non-native	Established	Ballast Water, Dry Ballast, Hull Fouling, Oyster Accidental
Crustaceans-Isopods	Limnoria tripunctata	1961	Non-native	Established	Hull Fouling, Oyster Accidental
Sponges	Lissodendoryx tylostyla*	2016	Non-native	Established	Oyster Accidental
Algae	Lomentaria hakodatensis*	1959	Non-native	Established	Ballast Water, Hull Fouling, Oyster Accidental
Mollusks-Bivalves	Magallana gigas	1902	Non-native	Established	Oyster Intentional
Algae	Mazzaella japonica*	2005	Non-native	Established	Hull Fouling, Oyster Accidental
Crustaceans-Amphipods	Melita nitida	1976	Non-native	Established	Ballast Water, Hull Fouling, Oyster Accidental
Fishes	Micropterus dolomieu	2014	Non-native	Established	None
Fishes	Micropterus salmoides	None	Non-native	Established	None
Tunicates	Molgula manhattensis	1998	Non-native	Established	Hull Fouling
Crustaceans-Amphipods	Monocorophium acherusicum	1915	Non-native	Established	Ballast Water, Hull Fouling, Oyster Accidental
Crustaceans-Amphipods	Monocorophium insidiosum	1915	Non-native	Established	Ballast Water, Hull Fouling, Oyster Accidental
Mollusks-Bivalves	Mya arenaria	1888	Non-native	Established	Fisheries Intentional
Mollusks-Gastropods	Myosotella myosotis	1936	Non-native	Established	Cargo, Dry Ballast, Oyster Accidental
Crustaceans-Copepods	Mytilicola orientalis	1943	Non-native	Established	Hull Fouling, Oyster Accidental
Mollusks-Bivalves	Mytilus galloprovincialis	1994	Non-native	Established	Ballast Water, Fisheries Accidental (not Oyster), Hull Fouling, Natural Dispersal
Mollusks-Gastropods	Nassarius fraterculus	1959	Non-native	Established	Oyster Accidental
Cnidarians-Anthozoans	Nematostella vectensis	1973	Non-native	Established	Ballast Water, Hull Fouling, Oyster Accidental
Mollusks-Bivalves	Neotrapezium liratum	1924	Non-native	Established	Oyster Accidental
Crustaceans-Cumaceans	Nippoleucon hinumensis	1998	Non-native	Established	Ballast Water, Oyster Accidental
Mollusks-Bivalves	Nuttallia obscurata	1991	Non-native	Established	Ballast Water
Mollusks-Gastropods	Ocinebrellus inornatus	1924	Non-native	Established	Oyster Accidental
Crustaceans-Copepods	Oithona davisae	2012	Non-native	Established	Ballast Water
Crustaceans-Isopods	Orthione griffenis	1995	Non-native	Established	Ballast Water, Discarded Bait, Natural Dispersal
Fishes	Perca flavescens	2005	Non-native	Established	None
Mollusks-Bivalves	Petricolaria pholadiformis	1995	Non-native	Established	Ballast Water, Oyster Accidental
Annelids-Polychaetes	Polydora cornuta	1932	Non-native	Established	Ballast Water, Hull Fouling, Oyster Accidental
Fishes	Pomoxis nigromaculatus	1933	Non-native	Established	None
Mollusks-Gastropods	Potamopyrgus antipodarum	2009	Non-native	Established	None
Annelids-Polychaetes	Proceraea okadai	2001	Non-native	Established	Ballast Water, Hull Fouling
Annelids-Polychaetes	Pseudopolydora cf. kempi	1951	Non-native	Established	Ballast Water, Oyster Accidental
Annelids-Polychaetes	Pseudopolydora paucibranchiata	2007	Non-native	Established	None
Platyhelminthes	Rhabdocoela sp.*	1985	Non-native	Established	Fisheries Accidental (not Oyster)
Mollusks-Bivalves	Ruditapes philippinarum	1924	Non-native	Established	Oyster Accidental
Fishes	Salmo trutta*	1932	Non-native	Established	Fisheries Intentional
Algae	Sargassum muticum	1944	Non-native	Established	Oyster Accidental
Bryozoans	Schizoporella japonica	1927	Non-native	Established	Oyster Accidental
Crustaceans-Tanaids	Sinelobus cf. stanfordi	1975	Non-native	Established	Ballast Water, Hull Fouling
Crustaceans-Copepods	Sinocalanus doerrii	1990	Non-native	Established	None
Annelids-Polychaetes	Streblospio benedicti	1994	Non-native	Established	Ballast Water, Hull Fouling, Oyster Accidental
Tunicates	Styela clava	1995	Non-native	Established	Hull Fouling
Mollusks-Bivalves	Teredo bartschi	1981	Non-native	Established	Oyster Accidental
Mollusks-Bivalves	Teredo navalis	1963	Non-native	Established	Hull Fouling
Protozoans	Trichodina sp.*	1985	Non-native	Established	Fisheries Accidental (not Oyster)
Protozoans	Trochammina hadai*	1971	Non-native	Established	Ballast Water, Oyster Accidental, Unknown Vector
Annelids-Oligochaetes	Tubificoides apectinatus*	1979	Non-native	Established	Ballast Water, Dry Ballast, Hull Fouling, Oyster Accidental
Annelids-Oligochaetes	Tubificoides benedii*	1991	Non-native	Established	Ballast Water, Dry Ballast, Hull Fouling, Oyster Accidental
Annelids-Oligochaetes	Tubificoides brownae*	None	Non-native	Established	Ballast Water, Dry Ballast, Hull Fouling, Oyster Accidental
Annelids-Oligochaetes	Tubificoides diazi*	1984	Non-native	Established	Ballast Water, Dry Ballast, Oyster Accidental
Annelids-Oligochaetes	Tubificoides wasselli*	1978	Non-native	Established	Ballast Water, Dry Ballast, Oyster Accidental
Algae	Ulva australis	2010	Non-native	Established	Ballast Water, Hull Fouling, Oyster Accidental
Mollusks-Gastropods	Urosalpinx cinerea	1929	Non-native	Established	Oyster Accidental
Bryozoans	Watersipora n. sp.	2010	Non-native	Established	Hull Fouling
Bryozoans	Watersipora subatra*	2002	Non-native	Established	Ballast Water, Hull Fouling

* = Species summary still under review.

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