CalCOFI.io CalCOFI.io open data ecosystem
Class · accepted · checked 2026-08-05

Polychaeta

polychaetes

WoRMS 883ITIS 64358key worms:883
i

2026-08-05: itis_id 64358 via WoRMS external link

Silhouette · Scott Hartman · CC0 1.0 · PhyloPic, drawn from Annelida

Size · not on record: no authority the fetcher reads carries a length for this taxon (a genus page could show the range of its species).

Photograph of Polychaeta
Photo · Wendy Feltham · CC BY-NC 4.0 · inat NC

Polychaeta is a paraphyletic class of generally marine annelid worms, commonly called bristle worms or polychaetes. Each body segment has a pair of fleshy protrusions called parapodia which bear many chitinous bristles called chaetae, hence their name.W CalCOFI holds 5,607 observations of it in 2 datasets between 1951 and 2026, across 2 taxa under it.R

5,607
observations
6,487
records
1,483
sampling events
1951–2026
years
2
datasets
0
species under it

Observed in
i

One row per dataset, one cell per year, darker with more observations — the same strip the front door draws per dataset. Each row ends with the name that dataset uses (dataset_taxon); the accepted name is written once, in the title above. A quiet pill marks a name the authority does not accept.

Under it · 1 taxon

Ways in
i

Read from taxa.json of release v2026.09.11, written at release by calcofi4db::build_taxa_catalog(). The catalog's index is /species/.

Explorerdb-query
ERDDAPCalCOFI's own server, the ZooScan (Imaged Zooplankton) table constrained to this taxon
https://erddap.calcofi.io/erddap/tabledap/cce-lter_zooscan.html?&taxon_key=%22worms:883%22