| Country | Japan | Ecosystem | Sea of Japan/East Sea |
| Locality | Tsushima Island | Depth | |
| Introduced | Year Intro. | ||
| Life Stage | adult | unsexed | medusa |
| Quantitative | Unit | ||
| Semi Quantitative | 1000-50000 | Unit | |
| Qualitative | extremely abundant | ||
| Year | 1920 - 1920 | Period | 1900-1924 |
| Date | 1920-01-01 00:00:00 - 1920-12-01 00:00:00 | Record Type | observation |
| Record Type | observation | ||
| Seasonal | Method | catch per unit effort | |
| Remarks | Mass occurrences of N. nomurai took place in 1920 wherein thousands of medusae were caught in nets daily. | ||