Invasion

Invasion Description

1st record: WA/Oyster Bay, Puget Sound (1915, USNM, from stomach of a duck, Carlton 1979; Shoemaker 1947)

Geographic Extent

Ketchikan/AK/Ketchikan Harbor (Fouling plates, Ruiz et al. 2022); Port Clements ,Haida Gwaii/British Columbia/Massett Inlet (6/12/2010, GBIF 2019, 53.68, -132.18); Vancouver Island/British Columbia/Nanaimo estuary (2007, Mach et al. 2017); British Columbia/Howe Sound, Straits of Georgia (Levings 1975, cited by Carlton 1979); British Columbia/Fraser River estuary, Straits of Georgia (Levings and McDaniel 1975, cited by Carlton 1979); Vancouver/British Columbia/Burrard Inlet (2010, Gatner et al. 2016); Victoria/British Columbia/Straits of Juan de Fuca (1928, Bousfield and Hoover 1997; Gatner et al. 2016); Vancouver Island/British Columbia/Saanich Inlet (1975, Bousfield and Hoover 1997); British Columbia/Pacific Ocean (2006-2007, Murray et al. 2014, 4 of 81 sites);; Friday Harbor/WA/Straits of Juan de Fuca (1955, Bousfield and Hoover 1997); WA/Oyster Bay, Puget Sound (1915, USNM, from stomach of a duck, Carlton 1979; Shoemaker 1947); WA/Totten Inlet, Puget Sound (Shoemaker 1947); Greenbank, Whidby Island/WA/Puget Sound (Shoemaker 1949, cited by Carlton 1979); Pier 90 Beach, Seattle/WA/Elliott Bay, Puget Sound (2000, Cohen et al. 2001); Bell Harbor Marina, Seattle/WA/Elliott Bay, Puget Sound (2000, Cohen et al. 2001); Seattle/WA/Kellogg Island Passage, Elliott Bay, Puget Sound (2000, Cohen et al. 2001);