Invasion

Invasion Description

1st record: Charleston/OR/Coos Bay (1947, Carlgren 1953, cited by Carlton 1979; USNM 91960, U.S. National Museum of Natural History 2007)

Geographic Extent

WA/Willapa Bay (Long 1967, cited by Carlton 1979); Goose Point/WA/Willapa Bay (2000, Cohen et al. 2001); Port of Bay Center/WA/Willapa Bay (2000, Cohen et al. 2001); Palix River Bridge/WA/Willapa Bay (2000, Cohen et al. 2001); Stackpole Slough/WA/Willapa Bay (2000, Cohen et al. 2001); Omeara Point/WA/Willapa Bay (2000, Cohen et al. 2001); Charleston/OR/Coos Bay (1947, Carlgren 1953, cited by Carlton 1979; USNM 91960, U.S. National Museum of Natural History 2007); OR/Coos Bay (1948, Carlgren 1953, cited by Carlton 1979; USNM 91959, U.S. National Museum of Natural History 2007); Coos Bay/OR/South Slough, Coos Bay (1970, Carlton 1979); Charleston Docks/OR/South Slough, Coos Bay (1970, Carlton 1979); Samoa Boat Ramp/CA/Humboldt Bay (1974, Carlton 1979); 'Abundant on oysters grown in the bay, in fouling at marinas, and in low intertidal rocky locations.'/CA/Humboldt Bay (2000, Boyd et al. 2002).