Worm

Hydroides brachyacantha

Other invertebrates
IUCN: Not evaluated

Usual depth3–16 m
Water temperature16–27 °C
Best monthsAugust and November
How commonRare

All species

Where and when

Where it has been recorded

Worldwide

Loading the map

Best months

Worldwide (open data)

January: 1 records
February: 4 records
March: 11 records
April: 0 records
May: 5 records
June: 3 records
July: 9 records
August: 18 records
September: 1 records
October: 1 records
November: 25 records
December: 0 records

Depth and water temperature

Depth

Mostly recorded at 3–16 m · Deepest record: 16 m

0–10 m: 7 records
10–20 m: 1 records

Water temperature

Recorded in surface water of 16–27 °C

14–16 °C: 9 records
16–18 °C: 0 records
18–20 °C: 1 records
20–22 °C: 0 records
22–24 °C: 18 records
24–26 °C: 11 records
26–28 °C: 43 records

Names and classification

English: Worm

Names in 1 more languages

Japanese: フトマガリカンザシゴカイ

Other scientific names: Eupomatus brachyacantha, Hydroides brachyacanthus

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).
269 open-data records from 1964 to 2015.
Species data updated November 3, 2026.

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