Facelina bilineata
- Usual depth2–19 m
- Water temperature13–24 °C
- Best monthsMarch and July
- How commonRare
Photo credit: (c) Izuzuki Diver, some rights reserved (CC BY-SA) · CC BY-SA · iNaturalist
About this species
Facelina bilineata is a species of sea slug, an aeolid nudibranch, a marine gastropod mollusc in the family Facelinidae.
Text from the Wikipedia article “Facelina bilineata”, licensed CC BY-SA 4.0. Read the article
Where and when
Where it has been recorded
Worldwide
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Best months
Worldwide (open data)
- January: 6 records
- February: 6 records
- March: 18 records
- April: 8 records
- May: 5 records
- June: 3 records
- July: 12 records
- August: 7 records
- September: 2 records
- October: 3 records
- November: 5 records
- December: 2 records
Depth and water temperature
Depth
Mostly recorded at 2–19 m · Deepest record: 25 m
Water temperature
Recorded in surface water of 13–24 °C
Names and classification
Names in 2 more languages
- Japanese
- フタスジミノウミウシ
- Korean
- 두줄하늘소갯민숭이
Similar species
- Scribbled Tentacle Aeolid
Facelina bourailli
Ornate facelinidAustraeolis ornata
Sunrise Tentacle AeolidCaloria indica
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).
- 74 open-data records from 2000 to 2026.
- Species data updated November 2, 2026.
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