| Country | Denmark | Ecosystem | Baltic Sea |
| Locality | Bornholm Basin, central Baltic Sea | Depth | |
| Introduced | Year Intro. | ||
| Life Stage | adult | unsexed | medusa |
| Quantitative | 0.0022 | Unit | numbers/m^3 |
| Semi Quantitative | <100 | Unit | numbers/m^3 |
| Qualitative | rare | ||
| Year | 1998 - 1998 | Period | 1975-2000 |
| Date | 1998-07-01 00:00:00 - 1998-07-31 00:00:00 | Record Type | field sample |
| Record Type | field sample | ||
| Seasonal | Method | volumetric | |
| Remarks | Estimate of abundance in July of 1998 (dates assumed). Trawled from depths of 0 to 90 m. | ||