| Specimen ID | 1617832 |
| Group | Mollusks-Gastropods |
| Genus | Potamopyrgus |
| Species | antipodarum |
| Common Name | New Zealand mudsnail |
| State | CA |
| County | Marin |
| Locality | Redwood Creek, from freshwater lagoon to just below the first car bridge (Pacific Way) |
| Mapping Accuracy | Accurate |
| HUC8 Name | Tomales-Drake Bays |
| HUC8 Number | 18050005 |
| HUC10 Name | Drakes Bay-Frontal Pacific Ocean |
| HUC10 Number | 1805000505 |
| HUC12 Name | Redwood Creek-Frontal Pacific Ocean |
| HUC12 Number | 180500050506 |
| Map | |
| Collection Day | 9 |
| Collection Month | 9 |
| Collection Year | 2019 |
| Year Accuracy | Actual |
| Potential Pathway | hitch hiker in aquaculture |
| Status | established |
| Comments | Seen during snorkel surveys. |
| Record Type | NAS sighting report |
| Verifier | National Park Service |
| Freshwater/Marine | Freshwater |
| Number Collected | 500 |
| Photo | |
