Where and when
Where it has been recorded
Worldwide
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Best months
Worldwide (open data)
- January: 0 records
- February: 0 records
- March: 0 records
- April: 0 records
- May: 0 records
- June: 0 records
- July: 0 records
- August: 0 records
- September: 0 records
- October: 1 records
- November: 0 records
- December: 0 records
Depth and water temperature
Water temperature
Recorded in surface water of 22–25 °C
Names and classification
Names in 1 more languages
- Japanese
- タツノコヘビガイ
Other scientific names: Bivonia dragonella
Similar species
Blackish worm shellThylacodes colubrinus
Variable Worm SnailThylacodes variabilis
- Great worm shell
Ceraesignum maximum
- Marine worm snail
Eualetes tulipa
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).
- 71 open-data records from 1985 to 2021.
- Species data updated November 2, 2026.
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