> [!summary]- Classification
**Kingdom**:: Animals
**Phylum**:: Annelida
**Subphylum**::
**Superclass**::
**Class**:: Polychaeta
**Subclass**:: Sedantaria
**Superorder**::
**Order**:: Sabellida
**Suborder**::
**Superfamily**::
**Family**:: Serpulidae
**Subfamily**::
**Genus**:: Spirobranchus
**Species**:: S. giganteus
**Vernacular**:: Christmas tree worm
## Photos
*[110 - 2023-02-26 - Jardins Precheur - Saint Pierre - Martinique](110%20-%202023-02-26%20-%20Jardins%20Precheur%20-%20Saint%20Pierre%20-%20Martinique.md) - The pink little appendice are its horn to get fixed and its opperculum to cover its tube once it has retracted. Very visible!*
## Notes
It's a common animal in caraibean and indo-pacific seas. It lives in association with [Millepora alcicornis - Sea ginger](Millepora%20alcicornis%20-%20Sea%20ginger.md) hydrozoa, [Porites sp.](Porites%20sp..md) corals.
It exists with many different colors, but can't be confused with other species, there's only this species that looks like a christmas tree.
## References
- https://en.wikipedia.org/wiki/Spirobranchus_giganteus
- https://doris.ffessm.fr/Especes/Spirobranchus-giganteus-Ver-arbre-de-Noel-937