Sternaspidae
| Sternaspidae | |
|---|---|
| Scientific classification | |
| Domain: | Eukaryota | 
| Kingdom: | Animalia | 
| Phylum: | Annelida | 
| Clade: | Pleistoannelida | 
| Clade: | Sedentaria | 
| Order: | Terebellida | 
| Family: | Sternaspidae Carus, 1863 | 
| Genera | |
| See text | |
Sternaspidae, commonly known as mud owls, are a family of marine polychaete worms with short swollen bodies. They have a global distribution and live buried in soft sediment at depths varying from the intertidal zone to 4,400 m (14,400 ft).