Invasion

Invasion Description

1st Record: CA/Bodega Harbor (1975, Standing et al. 1975, cited by Carlton 1979, as S. unicornis)

Geographic Extent

CA/Bodega Harbor (1975, Standing et al. 1975, cited by Carlton 1979; 2001, Fairey et al. 2002, as S. unicornis); Porto Bodega Marina/CA/Bodega Bay (2003, de Rivera et al. 2005); Mason's Marina/CA/Bodega Bay (2003, de Rivera et al. 2005)