Sunrise Tentacle Aeolid

About this species

Caloria indica is a species of sea slug, an aeolid nudibranch, a marine gastropod mollusc in the family Facelinidae.

Text from the Wikipedia article “Caloria indica”, 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: 167 records
February: 151 records
March: 242 records
April: 226 records
May: 165 records
June: 151 records
July: 175 records
August: 185 records
September: 159 records
October: 143 records
November: 146 records
December: 172 records

Depth and water temperature

Depth

Mostly recorded at 5–20 m · Deepest record: 38.1 m

0–10 m: 49 records
10–20 m: 93 records
20–30 m: 22 records
30–40 m: 4 records

Water temperature

Recorded in surface water of 13–30 °C

12–14 °C: 1 records
14–16 °C: 0 records
16–18 °C: 3 records
18–20 °C: 5 records
20–22 °C: 30 records
22–24 °C: 7 records
24–26 °C: 39 records
26–28 °C: 26 records
28–30 °C: 124 records

Photos

(c) Steve Childs, some rights reserved (CC BY) · CC BY · iNaturalist
(c) Cricket Raspet, some rights reserved (CC BY) · CC BY · iNaturalist
(c) Georgina Jones, some rights reserved (CC BY-SA) · CC BY-SA · iNaturalist
(c) Cricket Raspet, some rights reserved (CC BY) · CC BY · iNaturalist
(c) Kristof Zyskowski, some rights reserved (CC BY) · CC BY · iNaturalist

Names and classification

English: Sunrise Tentacle Aeolid, Indian Caloria, Sea slug, sunrise nudibranch

Names in 4 more languages

French: Phidiane indienne
Japanese: ヒブサミノウミウシ
Korean: 푸른점하늘소갯민숭이
Simplified Chinese: 印度灰翼海蛞蝓, 印度翼蓑海蛞蝓

Other scientific names: Aeolidia dangeri, Hervia dangeri, Learchis howensis, Learchis indica, Phidiana indica

Similar species

Military Tentacle Aeolid
Caloria militaris
Lined cratena
Cratena lineata
Black-horned Egg-eater
Favorinus tsuruganus
Australian Blue Dragon
Pteraeolidia ianthina
Ornate facelinid
Austraeolis ornata
Blue dragon
Pteraeolidia semperi

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).
719 open-data records from 1938 to 2026.
Species data updated October 26, 2026.