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Apomatus geniculatus (Moore & Bush, 1904)
Pearl-topped Calcareous Tubeworm; Polychaete Worm


© Neil McDaniel     (Photo ID #58548)


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Distribution of Apomatus geniculatus in British Columbia in British Columbia


A large serpulid tubeworm that grows with tube affixed to rocky walls, especially in BC fjords. Note the distinctive pearl-shaped operculum. Formerly it was thought there were two local species, but Apomatus timsii is now considered to be the same species and the name is a junior synonym.

Note Author: Neil McDaniel

Status Information

Origin StatusProvincial StatusBC List
(Red Blue List)

BC Ministry of Environment: BC Species and Ecosystems Explorer--the authoritative source for conservation information in British Columbia.

Synonyms and Alternate Names

Apomatus geniculata (Moore & Bush, 1904)
Apomatus timsii Pixel, 1912

General References