sea oak
- kingdom: Animalia
- phylum: Cnidaria
- class: Hydrozoa
- order: Leptothecata
- family: Sertulariidae
- genus: Dynamena
- species: Dynamena pumila
Halifax
Nova Scotia
Canada- France
Lysekil
Västra Götaland
Sweden
Flamborough- Redcar
- Scarborough
England
United Kingdom
Dennis- East Dennis
- Gloucester
Massachusetts
United States
Cherbourg-Octeville