Hydrozoa
hydrozoans
i
2026-08-05: itis_id 48739 via WoRMS external link
Hydrozoa, also called hydroids, are a taxonomic class of individually very small, predatory animals, some solitary and some colonial, most of which inhabit saline water. The colonies of the colonial species can be large, and in some cases the specialized individual animals cannot survive outside the colony.W CalCOFI holds 1,648 observations of it in 1 dataset between 1951 and 2021, across 2 taxa under it.R
- 1,648
- observations
- 2,010
- records
- 335
- sampling events
- 1951–2021
- years
- 1
- datasets
- 0
- species under it
Observed in 1 dataseti
One row per dataset, and beside it 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.
i
One row per dataset, and beside it 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.
-
name used: Hydrozoa HYDROMEDUSA · code
23
Ways inExplorerdb-queryERDDAPRPythonThis page as JSON
Code and endpoints ERDDAP · R · Python · JSON
library(calcofi4r) con <- cc_get_db() # the promoted release tbl(con, "obs_bio") |> filter(taxon_key == "worms:1337")
import calcofi4py as cc
con = cc.cc_get_db()
con.sql("SELECT * FROM obs_bio WHERE taxon_key = 'worms:1337'").df()Read from taxa.json of release v2026.10.19, written at release by calcofi4db::build_taxa_catalog(). The catalog's index is /species/.
How big is it not on record
Not on record: no authority the fetcher reads carries a length for this taxon (a genus page could show the range of its species).
Under it 1 taxon
- sC Hydroidolina1,005
Lineage 4 ranks · Biota to Medusozoa
Credits silhouette · photo · text
- Silhouette · Kanchi Nanjo · Public Domain Mark · PhyloPic, drawn from Gonionemus vertens · source
- Photo · Alex Shure · CC BY-NC 4.0 · inat · source
- Text · Wikipedia, “Hydrozoa” · CC BY-SA 4.0 · revision 1372932792
Elsewhere Wikidata · iNaturalist · GBIF
The same organism on the services the faces were fetched from; the authorities' own pages are the ids in the head.
Cite the release, v2026.10.19
Cite the release, v2026.10.19; each dataset's own citation, licence and DOI are on its page. How to cite ↗