Subclass

Sedentaria (Sedentary and tube-dwelling bristleworms)

Spirobranchus spinosus. Photo: (c) Robin Gwen Agarwal, some rights reserved (CC BY-NC)

iNaturalist • Wikipedia

The Polychaeta /ˌpɒlɪˈkiːtə/, also known as the bristle worms or polychaetes, are a paraphyletic class of annelid worms, generally marine. Each body segment has a pair of fleshy protrusions called parapodia that bear many bristles, called chaetae, which are made of chitin. As such, polychaetes are sometimes referred to as bristle worms. More than 10,000 species are described in this class. Common representatives include the lugworm (Arenicola marina) and the sandworm or clam worm Alitta.

— Wikipedia

Subtaxa

Infraclass: Canalipalpata

Where in Humboldt

Discussion

PLEASE SHARE YOUR THOUGHTS ABOUT SEDENTARIA, THE SEDENTARY AND TUBE-DWELLING BRISTLEWORMS