• Kingdom: Animalia
  • Phylum: Annelida
  • Class: Polychaeta
  • Subclass: Sedentaria
  • Order: Sabellida
  • Family: Serpulidae
  • Scientific name: Serpula vermicularis
  • Norwegian: rød kalkrørsmark


The red or pink tube color is characteristic for this species. There are five longitudinal and numerous transverse ridges on the tube. The diameter rarely exceeds 5 mm. The worm may grow to a length of 7 cm. The body has 200 segments. The crown consists of as many as 70 tentacles with red or white cross-bands.


It thrives on rocks, shells and other hard surfaces, in the sublittoral zone or below.


This tubeworm can be found world-wide.