Invasion

Invasion Description

1st Record: Skagit County/WA/Samish Bay (1927, McCain and Ross 1974; Ross and McCain 1976, cited by Carlton 1979)

Geographic Extent

Bellingham/WA/Bellingham Bay (McCain and Ross 1976, cited by Carlton 1979); Skagit County/WA/Samish Bay (1927, McCain and Ross 1974; Ross and McCain 1976, cited by Carlton 1979); Cap Sante/WA/Puget Sound (2003, de Rivera et al. 2005); Bayview/WA/Bayview Channel, Padilla Bay (2003, de Rivera et al. 2005)