Invasion

Invasion Description

1st Record: Cabrillo Beach, Point Loma, San Diego/CA/San Diego Bay (Counts 1986, USGS Nonindigenous Aquatic Species Program 2008, Occurrences in marine bays are likely to be sporadic and dependent on heavy rainfall)

Geographic Extent

Cabrillo Beach, Point Loma, San Diego/CA/San Diego Bay (Counts 1986, Counts 1991, USGS Nonindigenous Aquatic Species Program 2008, occurrences in marine bays are likely to be sporadic and dependent on heavy rainfall); San Diego National Wildlife Refuge/CA/Sweetwater River (2005, USGS Nonindigenous Aquatic Species Program 2008)