| Paese | United States (contiguous states) | Ecosistema | California Current |
| Località | Long Beach Marina (Back Harbor) | Depth | |
| Introdotto | Year Intro. | 1991 | |
| Stadio vitale | not specified | unsexed | |
| Quantitative | Unit | ||
| Semi Quantitative | 0 | Unit | numbers/m^2 |
| Qualitative | absent | ||
| Anno | 1998 - 1998 | Period | 1975-2000 |
| Data | 1998-03-20 00:00:00 - 1998-06-21 00:00:00 | Record Type | survey |
| Record Type | survey | ||
| Seasonal | Method | swept area | |
| Remarks | Species was not found during spring of 1998 (dates assumed). | ||