| Country | United States (contiguous states) | Ecosystem | California Current |
| Locality | Ventura (Back harbor: Pierpont Yacht Club) | Depth | |
| Introduced | Year Intro. | 1933 | |
| Life Stage | adult | unsexed | |
| Quantitative | Unit | ||
| Semi Quantitative | 100-1000 | Unit | numbers/m^2 |
| Qualitative | extremely abundant | ||
| Year | 1997 - 1997 | Period | 1975-2000 |
| Date | 1997-03-20 00:00:00 - 1997-06-21 00:00:00 | Record Type | survey |
| Record Type | survey | ||
| Seasonal | Method | swept area | |
| Remarks | Species is extremely abundant (>100 individuals/m^2) during spring of 1997 (dates assumed). | ||