| Main Ref. | Carlton, J.T., 1985 |
| To | San Francisco Bay, California |
| FAO area | Pacific, Eastern Central |
| From | Japan |
| FAO area | Pacific, Northwest |
| Year | 1977 |
| Range | |
| Period | 1975-present |
| Established in the Wild | Unknown |
| Established in Aquaculture | |
| Significant Ecological Interactions | Unknown |
| Significant Socio-economic Effects | |
| Introduced by | |
| Reason | biofouling |
| Other Reason | ballast water |
| Comments | Another introduction from Korea in the same year. In both cases, species was introduced via fouling or boring into ship's hulls and possibly via ballast water. Ref. Carlton, J.T., 1985 |