Avaldesia tahala
- Usual depth6–15 m
- Water temperature21–29 °C
- Best monthsApril, June, and December
- How commonRare
Where and when
Where it has been recorded
Worldwide
Loading the map
Best months
Worldwide (open data)
- January: 2 records
- February: 0 records
- March: 4 records
- April: 6 records
- May: 0 records
- June: 5 records
- July: 1 records
- August: 1 records
- September: 1 records
- October: 1 records
- November: 2 records
- December: 7 records
Depth and water temperature
Depth
Mostly recorded at 6–15 m · Deepest record: 15 m
Water temperature
Recorded in surface water of 21–29 °C
Names and classification
Other scientific names: Thordisa tahala
Similar species

Bohol DiscodorisDiscodoris boholiensis
Batangas HalgerdaHalgerda batangas
Willey’s NudibranchHalgerda willeyi
Ringed Velvet DoridJorunna funebris
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.
- 20 open-data records from 1989 to 2015.
- Species data updated October 26, 2026.
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