| Pays | United States (contiguous states) | Écosystème | California Current |
| Localité | Long Beach/ Los Angeles Harbors (Watchorn Marina) | Depth | |
| Introduit | Year Intro. | 1991 | |
| Stade de développement | not specified | unsexed | |
| Quantitative | Unit | ||
| Semi Quantitative | 0 | Unit | numbers/m^2 |
| Qualitative | absent | ||
| Année | 1998 - 1998 | Période | 1975-2000 |
| Date | 1998-03-20 00:00:00 - 1998-06-21 00:00:00 | Record Type | survey |
| Record Type | survey | ||
| Seasonal | Méthode | swept area | |
| Remarques | Species was not found during spring of 1998 (dates assumed). | ||