Invasion

Invasion Description

1st record: Manitou Beach, Kitsap County/WA/Puget Sound (1936; Burch 1943, cited by Carlton 1979)

Geographic Extent

Vancouver Island/British Columbia/Barkley Sound (2006, Gillespie 2007; Gillespie et al. 2007b); Nanaimo, Vancouver Island/British Columbia/Straits of Georgia (2006, Gillespie 2007; Gillespie et al. 2007b); British Columbia/Fraser River estuary (Environment Canada 1994); Crescent Beach/British Columbia-WA/Boundary Bay (Grass 1967, cited by Carlton 1979); Whatcom County/WA/Birch Bay (Duggan 1963, cited by Carlton 1979); Whatcom County/WA/Chuckanut Bay (1961, Morrison 1963, cited by Carlton 1979); San Juan Island/WA/Argyle Lagoon (1998, Cohen et al. 1998); Manitou Beach, Kitsap County/WA/Puget Sound (1936; Burch 1943, cited by Carlton 1979); Whidbey Island/Puget Sound (Burch and Eyerdam 1943, cited by Carlton 1979); WA/Hood Canal (1959, Carlton 1979); Edmonds/WA/Puget Sound (Carlton 1979); WA/Clallam Bay (Burch 1945, cited by Carlton 1979)