Taxonomic GroupNameYearInvasion StatusPopulation StatusVectors
Crustaceans-BarnaclesAmphibalanus improvisus1868DefiniteEstablishedHull Fouling
Annelids-PolychaetesBoccardiella ligerica1960DefiniteEstablishedBallast Water
Crustaceans-CladoceransCercopagis pengoi*1999DefiniteEstablishedBallast Water, Natural Dispersal
BryozoansConopeum chesapeakensis2024DefiniteEstablishedBallast Water, Hull Fouling
Cnidarians-HydrozoansCordylophora caspia1872DefiniteEstablishedCanal, Hull Fouling
Crustaceans-CrabsEriocheir sinensis1934DefiniteEstablishedBallast Water, Natural Dispersal
Crustaceans-AmphipodsGammarus tigrinus2003DefiniteEstablishedBallast Water, Hull Fouling
Crustaceans-MysidsHemimysis anomala*1992DefiniteEstablishedFisheries Intentional, Natural Dispersal
Annelids-PolychaetesLaonome cf. calida2015DefiniteEstablishedBallast Water, Hull Fouling
Annelids-PolychaetesMarenzelleria neglecta2008DefiniteEstablishedBallast Water, Natural Dispersal
Annelids-PolychaetesMarenzelleria viridis1990DefiniteEstablishedBallast Water, Natural Dispersal
Mollusks-BivalvesMya arenaria1900DefiniteEstablishedDry Ballast, Fisheries Intentional, Natural Dispersal
Mollusks-BivalvesMytilopsis leucophaeata2011DefiniteEstablishedBallast Water, Hull Fouling
FishesNeogobius melanostomus*2004DefiniteEstablishedNone
Crustaceans-ShrimpPalaemon elegans2011DefiniteEstablishedBallast Water, Natural Dispersal
Mollusks-GastropodsPotamopyrgus antipodarum1926DefiniteEstablishedCargo, Dry Ballast, Natural Dispersal, Packing Material
Crustaceans-CrabsRhithropanopeus harrisii2009DefiniteEstablishedBallast Water, Hull Fouling, Natural Dispersal
Crustaceans-TanaidsSinelobus cf. stanfordiNoneDefiniteEstablishedNone
BryozoansVictorella pavida1927DefiniteEstablishedHull Fouling
* = Species summary still under review.