| Country | Japan | Ecosystem | Sea of Japan/East Sea |
| Locality | Shiranuka | Depth | |
| Introduced | Year Intro. | ||
| Life Stage | not specified | unsexed | |
| Quantitative | 500 | Unit | numbers/m^2 |
| Semi Quantitative | 100-1000 | Unit | numbers/m^2 |
| Qualitative | common | ||
| Year | 2000 - 2000 | Period | 1975-2000 |
| Date | 2000-07-03 00:00:00 - 2000-07-03 00:00:00 | Record Type | survey |
| Record Type | survey | ||
| Seasonal | not specified | Method | quadrats |
| Remarks | Date of introduction not specified | ||