Obelia geniculata
| Obelia geniculata | |
|---|---|
| Scientific classification | |
| Domain: | Eukaryota | 
| Kingdom: | Animalia | 
| Phylum: | Cnidaria | 
| Class: | Hydrozoa | 
| Order: | Leptothecata | 
| Family: | Campanulariidae | 
| Genus: | Obelia | 
| Species: | O. geniculata | 
| Binomial name | |
| Obelia geniculata (Linnaeus, 1758) | |
Obelia geniculata is a species of cnidarian belonging to the family Campanulariidae. Its common name is the Knotted Thread Hydroid.
The species has cosmopolitan distribution.