| Country | Denmark | Ecosystem | |
| Locality | Kertinge Nor | Depth | 2 m |
| Introduced | Year Intro. | ||
| Life Stage | adult | unsexed | medusa |
| Quantitative | 300 | Unit | numbers/m^3 |
| Semi Quantitative | 100-1000 | Unit | numbers/m^3 |
| Qualitative | very common | ||
| Year | 1991 - 1991 | Period | 1975-2000 |
| Date | 1991-06-22 00:00:00 - 1991-09-28 00:00:00 | Record Type | |
| Record Type | |||
| Seasonal | Method | ||
| Remarks | Abundance value for summer of 1991 (dates assumed). Mean water depth of 2m. | ||