---
title: "Lamarck's Christmas Tree Worm"
description: "Spirobranchus lamarcki — Other animals. Spirobranchus lamarcki is a species of tube-building annelid worm which is widespread in intertidal and sub-littoral zones around the United Kingdom and northern Europe."
canonical: https://animalchecklist.com/animal/lamarck-s-christmas-tree-worm
last_updated: 2026-09-20
---

# Lamarck's Christmas Tree Worm

> Spirobranchus lamarcki — Other animals. Spirobranchus lamarcki is a species of tube-building annelid worm which is widespread in intertidal and sub-littoral zones around the United Kingdom and northern Europe.

- Scientific name: *Spirobranchus lamarcki*
- Category: `other` (Other animals)
- Habitats: `sea` (Sea & coast)
- iNaturalist observations: 260
- Wikidata: [Q2422571](https://www.wikidata.org/wiki/Q2422571)
- iNaturalist taxon: [603592](https://www.inaturalist.org/taxa/603592)

## Names

- en: Lamarck's Christmas Tree Worm
- fr: Serpule triangulaire
- nl: Gerichelde driekantkalkkokerworm

## Countries with the most observations

GB (61), FR (24), ES (4), HR (4)

## Summary

Spirobranchus lamarcki is a species of tube-building annelid worm which is widespread in intertidal and sub-littoral zones around the United Kingdom and northern Europe. They are found attached to firm substrates, from rocks to animal shells to man made structures, and often are noted for their detrimental effect on shipping. It is closely related to, and often confused with, Spirobranchus triqueter.
Spirobranchus lamarcki has been the subject of a number of scientific investigations, due to its presence near sites of historic scientific study, relatively underived mode of development   and slowly evolving genetic…

Text: Wikipedia (en), CC BY-SA 4.0 — https://en.wikipedia.org/wiki/Spirobranchus_lamarcki

## Photo

![Lamarck's Christmas Tree Worm](https://animalchecklist.com/img/animals/lamarck-s-christmas-tree-worm/medium.jpg)

Photo: Christian Kahle · CC0 · inaturalist — https://www.inaturalist.org/observations/32942526

## Machine access

`GET https://animalchecklist.com/api/v1/animals/lamarck-s-christmas-tree-worm?lang=en` — see [openapi.json](https://animalchecklist.com/openapi.json).