Lined cratena
Cratena lineata
- Usual depth1–12 m
- Water temperature16–29 °C
- Best monthsSeptember
- How commonOccasional
Photo credit: (c) mapefrli, some rights reserved (CC BY) · CC BY · iNaturalist
About this species
Cratena lineata is a species of sea slug, an aeolid nudibranch, a marine gastropod mollusc in the family Facelinidae.
Text from the Wikipedia article “Cratena lineata”, 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: 76 records
- February: 42 records
- March: 59 records
- April: 34 records
- May: 52 records
- June: 42 records
- July: 47 records
- August: 57 records
- September: 128 records
- October: 65 records
- November: 66 records
- December: 60 records
Depth and water temperature
Depth
Mostly recorded at 1–12 m · Deepest record: 17 m
Water temperature
Recorded in surface water of 16–29 °C
Photos
(c) mapefrli, some rights reserved (CC BY) · CC BY · iNaturalist 
(c) Shaunak Modi, some rights reserved (CC BY) · CC BY · iNaturalist 
(c) Shaunak Modi, some rights reserved (CC BY) · CC BY · iNaturalist
Names and classification
- English
- Lined cratena
Names in 2 more languages
- Japanese
- ハクセンミノウミウシ
- Simplified Chinese
- 白紋灰翼海蛞蝓（線紋角海蛞蝓）
Other scientific names: Hervia lineata
Similar species
Lion Tentacle AeolidCratena simba
Sunrise Tentacle AeolidCaloria indica
Black-horned Egg-eaterFavorinus tsuruganus
Australian Blue DragonPteraeolidia ianthina
Military Tentacle AeolidCaloria militaris
White-diamond Egg-eaterFavorinus japonicus
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).
- 151 open-data records from 1976 to 2026.
- Species data updated October 26, 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.