
Ophicardelus ornatus
- Usual depth0–0 m
- Water temperature14–26 °C
- Best monthsFebruary, March, and May
- How commonOccasional
Photo credit: (c) Tim, some rights reserved (CC BY-SA), uploaded by Tim · CC BY-SA · iNaturalist
Where and when
Where it has been recorded
Worldwide
Loading the map
Best months
Worldwide (open data)
- January: 34 records
- February: 57 records
- March: 75 records
- April: 31 records
- May: 64 records
- June: 32 records
- July: 19 records
- August: 53 records
- September: 54 records
- October: 35 records
- November: 44 records
- December: 28 records
Depth and water temperature
Depth
Mostly recorded at 0–0 m · Deepest record: 0.3 m
Water temperature
Recorded in surface water of 14–26 °C
Photos

(c) Tim, some rights reserved (CC BY-SA) · CC BY-SA · iNaturalist 
(c) Peter Crowcroft, some rights reserved (CC BY) · CC BY · iNaturalist 
(c) James K. Douch, some rights reserved (CC BY-SA) · CC BY-SA · iNaturalist 
(c) Tim, some rights reserved (CC BY-SA) · CC BY-SA · iNaturalist 
(c) James K. Douch, some rights reserved (CC BY-SA) · CC BY-SA · iNaturalist 
(c) bughntr, some rights reserved (CC BY-SA) · CC BY-SA · iNaturalist 
(c) coenobita, some rights reserved (CC BY) · CC BY · iNaturalist
Names and classification
Other scientific names: Auricula australis, Auricula bidens, Auricula ornata, Auricula ovata, Cremnobates cornea, Ophicardelus australis
Similar species

Mouse-eared snailMyosotella myosotis

Judas Ear CassidulaEllobium aurisjudae
Midas ear cassidulaEllobium aurismidae

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).
- 670 open-data records from 1900 to 2014.
- Species data updated November 5, 2026.
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