Blue dragon
Pteraeolidia semperi
- Usual depth4–17 m
- Water temperature19–29 °C
- Best monthsJanuary, February, and March
- How commonOccasional
Where and when
Where it has been recorded
Worldwide
Loading the map
Best months
Worldwide (open data)
- January: 25 records
- February: 26 records
- March: 28 records
- April: 11 records
- May: 10 records
- June: 14 records
- July: 19 records
- August: 18 records
- September: 20 records
- October: 18 records
- November: 16 records
- December: 21 records
Depth and water temperature
Depth
Mostly recorded at 4–17 m · Deepest record: 28 m
Water temperature
Recorded in surface water of 19–29 °C
Names and classification
- English
- Blue dragon, Blue Dragon Nudibranch, Chinese Dragon Nudibranch
Names in 3 more languages
- French
- Dragon bleu, Dragon bleu, Limace à franges
- Japanese
- ムカデミノウミウシ
- Simplified Chinese
- 紫灰翼海蛞蝓
Other scientific names: Flabellina scolopendrella, Flabellina semperi
Similar species
Australian Blue DragonPteraeolidia ianthina
Sunrise Tentacle AeolidCaloria indica
Lined cratenaCratena lineata
Black-horned Egg-eaterFavorinus tsuruganus
- Ornate facelinid
Austraeolis ornata
Military Tentacle AeolidCaloria militaris
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).
- 736 open-data records from 1955 to 2026.
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