spear-head ancilla
Amalda contusa
- Usual depth48–85 m
- Water temperature17–25 °C
- Best monthsJune
- How commonRare
Photo credit: (c) Brian du Preez, some rights reserved (CC BY-SA) · CC BY-SA · iNaturalist
About this species
Amalda contusa is a species of sea snail, a marine gastropod mollusk in the family Ancillariidae.
Text from the Wikipedia article “Amalda contusa”, licensed CC BY-SA 4.0. Read the article
Where and when
Where it has been recorded
Worldwide
Loading the map
Best months
Worldwide (open data)
- January: 0 records
- February: 0 records
- March: 0 records
- April: 0 records
- May: 0 records
- June: 30 records
- July: 6 records
- August: 1 records
- September: 0 records
- October: 1 records
- November: 0 records
- December: 0 records
Depth and water temperature
Depth
Mostly recorded at 48–85 m · Deepest record: 300 m
Water temperature
Recorded in surface water of 17–25 °C
Names and classification
- English
- spear-head ancilla
Other scientific names: Ancilla contusa, Ancillaria contusa
Similar species
Margin ancillaAmalda marginata
Oblong OliveAmalda oblonga
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.
- Descriptions: Wikipedia, licensed CC BY-SA, each linked to its article.
- Conservation status as published by GBIF (IUCN Red List).
- 141 open-data records from 1971 to 1990.
- Species data updated October 27, 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.