| Specimen ID | 160966 |
| Group | Tunicates |
| Genus | Didemnum |
| Species | vexillum |
| Common Name | a colonial sea squirt |
| State | CA |
| County | Monterey |
| Locality | Elkhorn Slough [at Moss Landing, CA] |
| Mapping Accuracy | Accurate |
| HUC8 Name | Monterey Bay |
| HUC8 Number | 18060015 |
| HUC10 Name | Monterey Bay |
| HUC10 Number | 1806001503 |
| HUC12 Name | Elkhorn Slough |
| HUC12 Number | 180600150301 |
| Map | |
| Collection Day | 30 |
| Collection Month | 4 |
| Collection Year | 1998 |
| Year Accuracy | Actual |
| Potential Pathway | shipping |
| Status | established |
| Comments | First documented occurrence in California. |
| Record Type | Specimen |
| Earliest Record | state |
| Disposal | museum (CA Academy of Sciences) |
| Museum Cat Number | 144184 |
| Freshwater/Marine | Marine |