Taxonomic Group	Name	Year	Invasion Status	Population Status	Vectors
Fishes	Alosa sapidissima	1942	Non-native	Established	Natural Dispersal
Crustaceans-Barnacles	Amphibalanus improvisus	1955	Non-native	Established	Ballast Water, Hull Fouling, Oyster Intentional
Crustaceans-Amphipods	Ampithoe valida	2000	Non-native	Established	Ballast Water, Hull Fouling, Oyster Accidental
Platyhelminthes	Austrobilharzia variglandis*	2003	Non-native	Established	Oyster Accidental
Mollusks-Gastropods	Batillaria attramentaria	2007	Non-native	Established	Fisheries Accidental (not Oyster), Oyster Accidental
Tunicates	Botrylloides violaceus	1979	Non-native	Established	Hull Fouling, Oyster Accidental
Tunicates	Botryllus schlosseri	2000	Non-native	Established	Hull Fouling, Oyster Accidental
Algae	Campylaephora kondoi*	2007	Non-native	Established	Oyster Accidental
Crustaceans-Amphipods	Caprella drepanochir	1996	Non-native	Established	Ballast Water, Hull Fouling, Oyster Accidental
Crustaceans-Crabs	Carcinus maenas	1998	Non-native	Established	Ballast Water, Discarded Bait, Hull Fouling, Natural Dispersal
Mollusks-Gastropods	Cecina manchurica	1963	Non-native	Established	Oyster Accidental
Platyhelminthes	Cercaria batillariae*	2016	Non-native	Established	Fisheries Accidental (not Oyster)
Sponges	Chalinula loosanoffi*	2000	Non-native	Established	Hull Fouling, Oyster Accidental
Arthropoda-Insects	Chilacis typhae*	1998	Non-native	Established	Aquatic Plant Shipments, Cargo, Dry Ballast
Sponges	Clathria prolifera*	1967	Non-native	Established	Hull Fouling, Oyster Accidental
Cnidarians-Hydrozoans	Cordylophora caspia	2000	Non-native	Established	Hull Fouling, Oyster Accidental
Mollusks-Gastropods	Crepidula fornicata	1937	Non-native	Established	Oyster Accidental
Mollusks-Gastropods	Crepidula plana	1937	Non-native	Established	Oyster Accidental
Cnidarians-Anthozoans	Diadumene lineata	1967	Non-native	Established	Hull Fouling, Oyster Intentional
Crustaceans-Ostracods	Eusarsiella zostericola	2000	Non-native	Established	Oyster Accidental
Algae	Gracilaria vermiculophylla	2017	Non-native	Established	Oyster Accidental
Crustaceans-Amphipods	Grandidierella japonica	1985	Non-native	Established	Hull Fouling, Oyster Accidental
Annelids-Polychaetes	Hediste diadroma	2009	Non-native	Established	Ballast Water, Hull Fouling, Natural Dispersal
Platyhelminthes	Himasthla quissetensis*	2003	Non-native	Established	Oyster Accidental
Annelids-Polychaetes	Hobsonia florida	2000	Non-native	Established	Ballast Water, Hull Fouling, Oyster Accidental
Mollusks-Gastropods	Ilyanassa obsoleta	1945	Non-native	Established	Oyster Accidental
Crustaceans-Amphipods	Jassa marmorata	2000	Non-native	Established	Ballast Water, Hull Fouling, Oyster Accidental
Mollusks-Bivalves	Laternula gracilis	1998	Non-native	Established	Oyster Accidental
Crustaceans-Isopods	Limnoria tripunctata	1964	Non-native	Established	Hull Fouling, Oyster Accidental
Mollusks-Bivalves	Magallana gigas	1928	Non-native	Established	Oyster Intentional
Crustaceans-Amphipods	Melita nitida	1994	Non-native	Established	Hull Fouling, Oyster Accidental
Tunicates	Molgula manhattensis	2000	Non-native	Established	Hull Fouling, Oyster Accidental
Crustaceans-Amphipods	Monocorophium acherusicum	1968	Non-native	Established	Hull Fouling, Oyster Intentional
Crustaceans-Amphipods	Monocorophium insidiosum	2000	Non-native	Established	Ballast Water, Hull Fouling, Oyster Accidental
Mollusks-Bivalves	Mya arenaria	1876	Non-native	Established	Fisheries Intentional
Mollusks-Gastropods	Myosotella myosotis	1963	Non-native	Established	Cargo, Dry Ballast, Oyster Accidental
Crustaceans-Copepods	Mytilicola orientalis	1938	Non-native	Established	Hull Fouling, Oyster Accidental
Cnidarians-Anthozoans	Nematostella vectensis	2009	Non-native	Established	Hull Fouling, Oyster Accidental
Mollusks-Bivalves	Neotrapezium liratum	1947	Non-native	Established	Oyster Accidental
Crustaceans-Cumaceans	Nippoleucon hinumensis	2001	Non-native	Established	Ballast Water, Oyster Accidental
Mollusks-Bivalves	Nuttallia obscurata	2002	Non-native	Established	Ballast Water, Fisheries Accidental (not Oyster), Natural Dispersal
Mollusks-Gastropods	Ocinebrellus inornatus	1939	Non-native	Established	Oyster Accidental
Crustaceans-Isopods	Orthione griffenis	1988	Non-native	Established	Discarded Bait, Natural Dispersal
Crustaceans-Amphipods	Paracorophium sp.	2022	Non-native	Established	Hull Fouling, Oyster Accidental
Mollusks-Bivalves	Petricolaria pholadiformis	1943	Non-native	Established	Oyster Accidental
Annelids-Polychaetes	Polydora cornuta	2000	Non-native	Established	Ballast Water, Hull Fouling, Oyster Accidental
Mollusks-Gastropods	Potamopyrgus antipodarum	2002	Non-native	Established	Fisheries Accidental (not Oyster), Hull Fouling, Natural Dispersal
Arthropoda-Insects	Prokelisia marginata*	2000	Non-native	Established	Biocontrol
Crustaceans-Copepods	Pseudodiaptomus inopinus	1991	Non-native	Established	Ballast Water, Natural Dispersal
Annelids-Polychaetes	Pseudopolydora cf. kempi	2000	Non-native	Established	Oyster Accidental
Annelids-Polychaetes	Pseudopolydora paucibranchiata	1996	Non-native	Established	Oyster Accidental
Mollusks-Bivalves	Ruditapes philippinarum	1946	Non-native	Established	Oyster Accidental
Algae	Sargassum muticum	1953	Non-native	Established	Oyster Accidental
Bryozoans	Schizoporella japonica	1970	Non-native	Established	Hull Fouling, Oyster Accidental
Crustaceans-Tanaids	Sinelobus cf. stanfordi	1996	Non-native	Established	Hull Fouling, Oyster Accidental
Annelids-Polychaetes	Streblospio benedicti	2000	Non-native	Established	Ballast Water, Hull Fouling, Oyster Accidental
Crustaceans-Isopods	Synidotea laticauda	1987	Non-native	Established	Ballast Water, Hull Fouling, Oyster Accidental
Mollusks-Bivalves	Teredo navalis	1957	Non-native	Established	Hull Fouling
Protozoans	Trochammina hadai*	1998	Non-native	Established	Ballast Water, Oyster Accidental, Unknown Vector
Mollusks-Gastropods	Urosalpinx cinerea	1948	Non-native	Established	Oyster Accidental

* = Species summary still under review.

p270 (Willapa Bay) Summary