Red Thread-gilled Worm

Cirriformia tentaculata

Other invertebrates
IUCN: Not evaluated

Usual depth0–66 m
Water temperature8–29 °C
Best monthsMarch, May, and June
How commonCommon

All species

About this species

Cirriformia tentaculata, is a species of marine polychaete worm in the family Cirratulidae.

Text from the Wikipedia article “Cirriformia tentaculata”, licensed CC BY-SA 4.0. Read the article

Where and when

Where it has been recorded

Worldwide

Loading the map

Best months

Worldwide (open data)

January: 146 records
February: 199 records
March: 547 records
April: 508 records
May: 680 records
June: 584 records
July: 329 records
August: 371 records
September: 395 records
October: 174 records
November: 95 records
December: 50 records

Depth and water temperature

Depth

Mostly recorded at 0–66 m · Deepest record: 500 m

0–10 m: 944 records
10–20 m: 440 records
20–30 m: 337 records
30–40 m: 213 records
40–50 m: 118 records
50–60 m: 93 records
60–70 m: 65 records
70–80 m: 58 records
80–90 m: 14 records
90–100 m: 13 records
100–110 m: 13 records
110+ m: 115 records

Water temperature

Recorded in surface water of 8–29 °C

8–10 °C: 24 records
10–12 °C: 320 records
12–14 °C: 263 records
14–16 °C: 11 records
16–18 °C: 14 records
18–20 °C: 55 records
20–22 °C: 9 records
22–24 °C: 10 records
24–26 °C: 2 records
26–28 °C: 1 records
28–30 °C: 4 records

Names and classification

English: Red Thread-gilled Worm

Names in 3 more languages

French: Ver aux fils rouges
Japanese: ミズヒキゴカイ
Korean: 명주실타래갯지렁이

Other scientific names: Audouinia comosa, Audouinia crassa, Audouinia lamarckii, Audouinia norwegica, Audouinia tentaculata, Cirratulus atrocollaris, Cirratulus comosus, Cirratulus lamarckii, Cirratulus pallidus, Cirratulus tentaculatus, Cirrhatulus lamarckii, Terebella tentaculata, Timarete tentaculata

Similar species

Orange Burrowing Worm
Cirriformia capensis
Cirriformia afer
Cirriformia filigera
Cirriformia saxatilis
Cirriformia semicincta
Bristleworm
Cirratulus cirratus

Sources and credits

Names and taxonomy: WoRMS (CC BY 4.0) and the GBIF Backbone (CC BY 4.0). Photos: iNaturalist observers, each under the licence shown (CC0, CC BY or CC BY-SA).

Depth, temperature, months and maps: records from OBIS and GBIF under CC0 or CC BY.
Descriptions: Wikipedia, licensed CC BY-SA, each linked to its article.
Conservation status as published by GBIF (IUCN Red List).
8,297 open-data records from 1808 to 2023.
Species data updated November 1, 2026.

Log what you see on your next dive

The free DiveHive diver app keeps your logbook with every sighting and shows what lives at the site you dive next.

Join the waitlist