Animal Diversity Web

Obelia

Kingdom Animalia (animals)
- Eumetazoa (metazoans)
  - Phylum Cnidaria (corals, sea anemones, jellyfish, and relatives)
    - Class Hydrozoa
      - Order Leptothecata
        
        Family Campanulariidae
        
        Genus Obelia
        
        Species Obelia bidentata (Doubletoothed hydroid)
        
        Species Obelia castellata
        
        Species Obelia dichotoma (Sea thread hydroid)
        
        Species Obelia fimbriata
        
        Species Obelia geniculata (Knotted thread hydroid)
        
        Species Obelia irregularis
        
        Species Obelia longicyatha
        
        Species Obelia longissima