| Sagartiogeton undatus (Müller, 1778) | 
| No Picture Available | 
| Family: | Sagartiidae () | |||
| Max. size: | ||||
| Environment: | sessile; marine | |||
| Distribution: | Atlantic and the Mediterranean: Germany and Denmark. | |||
| Diagnosis: | ||||
| Biology: | Known from infra- and circalittoral as well as bathyal zones (Ref. 85338). Found on dense tube mats formed by the amphipod, Jassa herdmani (Ref. 96377). Solitary (Ref. 2377). | |||
| IUCN Red List Status: | Not Evaluated (N.E.) Ref. 123251) | |||
| Threat to humans: | ||||
| Country info: |  | |||