Invasion

Invasion Description

1st Record: Bay City/WA/Willapa Bay (1937, Sayce and Tufts 1970, cited by Carlton 1979)

Geographic Extent

Bay City/WA/Willapa Bay (Sayce and Tufts 1970, cited by Carlton 1979); Pacific County/WA/Stackpole Slough, Willapa Bay (2000, Cohen et al. 2001);