
Heteromacoma irus
- Water temperature14–21 °C
- Best monthsApril, August, and November
- How commonRare
Photo credit: (c) りなべる, some rights reserved (CC BY) · CC BY · iNaturalist
Where and when
Where it has been recorded
Worldwide
Loading the map
Best months
Worldwide (open data)
- January: 2 records
- February: 0 records
- March: 2 records
- April: 4 records
- May: 1 records
- June: 3 records
- July: 0 records
- August: 6 records
- September: 1 records
- October: 1 records
- November: 6 records
- December: 1 records
Depth and water temperature
Water temperature
Recorded in surface water of 14–21 °C
Names and classification
Names in 2 more languages
- Japanese
- シラトリモドキ
- Korean
- 대양조개, 대양조개사돈
Other scientific names: Fragilia yantaiensis, Heteromacoma yantaiensis, Tellina irus, Tellina yantaiensis
Similar species
- Fine-ridged Tellen
Semelangulus tenuiliratus

Angled wedge shellBartschicoma gaimardi



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).
- 133 open-data records from 1961 to 2008.
- Species data updated November 3, 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.