Trekantmark.
  • Creative Commons Attribution | Erling Svensen

This is one of the most common serpulids, or calcareus tube worms, in Norway. Spirobranchus triqueter is found in shallow waters attached to hard natural or artificial substrates. In Norwegian ports, this species is common and often very abundant. It was previously known as Pomatoceros triqueter.

Trekantmark Spirobranchus triqueter (Linnaeus, 1767)
Creative Commons Attribution | Maria Capa | University of the Balearic Islands
Kart. Utbredelse i Norge.