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| Spionida | |
|---|---|
| |
| Magelona johnstoni with long feeding palps. | |
Scientific classification 
| |
| Domain: | Eukaryota |
| Kingdom: | Animalia |
| Phylum: | Annelida |
| Clade: | Pleistoannelida |
| Clade: | Sedentaria |
| Infraclass: | Canalipalpata |
| Order: | Spionida |
| Families | |
|
Several, see text | |
Spionida is an order of marine polychaete worms in the infraclass Canalipalpata. Spionids are cosmopolitan and live in soft substrates in the littoral or neritic zones.[1]