channeled sundial

Heliacus infundibuliformis

Molluscs
IUCN: Not evaluated

Usual depth1–183 m
Water temperature20–29 °C
Best monthsJuly
How commonRare

All species

Photo credit: (c) Philippe Bourjon, some rights reserved (CC BY-SA) · CC BY-SA · iNaturalist

Where and when

Where it has been recorded

Worldwide

Loading the map

Best months

Worldwide (open data)

January: 3 records
February: 7 records
March: 5 records
April: 4 records
May: 0 records
June: 3 records
July: 14 records
August: 4 records
September: 2 records
October: 2 records
November: 2 records
December: 4 records

Depth and water temperature

Depth

Mostly recorded at 1–183 m · Deepest record: 183 m

0–10 m: 1 records
10–20 m: 0 records
20–30 m: 0 records
30–40 m: 1 records
40–50 m: 2 records
50–60 m: 0 records
60–70 m: 0 records
70–80 m: 0 records
80–90 m: 0 records
90–100 m: 0 records
100–110 m: 0 records
110+ m: 1 records

Water temperature

Recorded in surface water of 20–29 °C

18–20 °C: 1 records
20–22 °C: 0 records
22–24 °C: 5 records
24–26 °C: 8 records
26–28 °C: 43 records
28–30 °C: 27 records

Names and classification

English: channeled sundial

Names in 1 more languages

Japanese: ヒラマキナワメグルマ

Other scientific names: Heliacus (Teretropoma) infundibuliformis

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).
127 open-data records from 1907 to 2021.
Species data updated November 3, 2026.

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