| Country | United States (contiguous states) | Ecosystem | California Current |
| Locality | Long Beach/ Los Angeles Harbors (Watchorn Marina) | Depth | |
| Introduced | Year Intro. | 1984 | |
| Life Stage | not specified | unsexed | |
| Quantitative | Unit | ||
| Semi Quantitative | <100 | Unit | numbers/m^2 |
| Qualitative | rare | ||
| Year | 1997 - 1997 | Period | 1975-2000 |
| Date | 1997-09-23 00:00:00 - 1997-12-21 00:00:00 | Record Type | survey |
| Record Type | survey | ||
| Seasonal | Method | swept area | |
| Remarks | Species is rare (<0.1 individuals/m^2) during fall of 1997 (dates assumed). | ||