Polychaete worm
- kingdom: Animalia
- phylum: Annelida
- class: Polychaeta
- order: Eunicida
- family: Eunicidae
- genus: Marphysa
- species: Marphysa sanguinea
- Panamá
Panamá
Panama- Uddevalla
Västra Götaland
Sweden- Plymouth
- Saint Agnes
England
United Kingdom- East Palo Alto
- Redwood City
California- Branford
- Branford Center
- West Haven
Connecticut- Pearl City
- Waipahu
Hawaii- Charleston
South Carolina
United States