Club Worm

Notomastus latericeus

Other invertebrates
IUCN: Not evaluated

Usual depth6–365 m
Water temperature-2–29 °C
Best monthsApril, May, and September
How commonCommon

All species

Where and when

Where it has been recorded

Worldwide

Loading the map

Best months

Worldwide (open data)

January: 425 records
February: 1,047 records
March: 1,633 records
April: 2,158 records
May: 2,585 records
June: 1,277 records
July: 1,166 records
August: 1,191 records
September: 1,812 records
October: 878 records
November: 872 records
December: 204 records

Depth and water temperature

Depth

Mostly recorded at 6–365 m · Deepest record: 7,200 m

0–10 m: 1,694 records
10–20 m: 1,027 records
20–30 m: 998 records
30–40 m: 676 records
40–50 m: 489 records
50–60 m: 413 records
60–70 m: 221 records
70–80 m: 135 records
80–90 m: 392 records
90–100 m: 309 records
100–110 m: 473 records
110+ m: 8,434 records

Water temperature

Recorded in surface water of -2–29 °C

-2–0 °C: 6 records
0–2 °C: 1 records
2–4 °C: 1 records
4–6 °C: 3 records
6–8 °C: 65 records
8–10 °C: 63 records
10–12 °C: 381 records
12–14 °C: 190 records
14–16 °C: 22 records
16–18 °C: 10 records
18–20 °C: 9 records
20–22 °C: 16 records
22–24 °C: 4 records
24–26 °C: 37 records
26–28 °C: 7 records
28–30 °C: 15 records

Names and classification

English: Club Worm

Names in 2 more languages

Japanese: シダレイトゴカイ
Korean: 가는버들갯지렁이

Other scientific names: Arenia cruenta, Arenia fragilis, Capitella rubicunda, Notomastus (Tremomastus) benedeni, Notomastus (Tremomastus) fertilis, Notomastus benedeni, Notomastus rubicundus, Sandanis rubicundus

Similar species

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.
Conservation status as published by GBIF (IUCN Red List).
58,227 open-data records from 1851 to 2025.
Species data updated November 5, 2026.

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