Tube worm (body plan)

A tube worm is a worm-like sessile invertebrate that anchors its tail to an underwater surface and secretes around its body a mineral tube, into which it can withdraw its entire body.

Tube worms are found among the following taxa:

• (The phylum) Annelida (a.k.a. segmented worms)
  • (The class) Polychaetea (a.k.a. bristle worms)
    • (The order) Canalipalpata (a.k.a. bristle-footed annelids or fan-head worms)
      • (The family) Siboglinidae (a.k.a. beard worms)
        • (The species) Riftia pachyptila (a.k.a. giant tube worm)
        • (The genus) Lamellibrachia
      • (The family) Serpulidae
      • (The family) Sabellidae (a.k.a. feather duster worms)
• The phylum Phoronida (a.k.a. horseshoe worms)
• The order Microconchida (extinct tubeworms)