Military Tentacle Aeolid
Caloria militaris
- Usual depth10–17 m
- Water temperature17–30 °C
- Best monthsApril, July, and September
- How commonRare
Photo credit: (c) Srichakra Pranav Tamarapalli, some rights reserved (CC BY-SA) · CC BY-SA · iNaturalist
Where and when
Where it has been recorded
Worldwide
Loading the map
Best months
Worldwide (open data)
- January: 33 records
- February: 37 records
- March: 34 records
- April: 42 records
- May: 35 records
- June: 24 records
- July: 39 records
- August: 26 records
- September: 45 records
- October: 17 records
- November: 22 records
- December: 34 records
Depth and water temperature
Depth
Mostly recorded at 10–17 m · Deepest record: 17 m
Water temperature
Recorded in surface water of 17–30 °C
Photos
(c) Srichakra Pranav Tamarapalli, some rights reserved (CC BY-SA) · CC BY-SA · iNaturalist 
(c) Ewout Knoester, some rights reserved (CC BY-SA) · CC BY-SA · iNaturalist 
(c) Ewout Knoester, some rights reserved (CC BY-SA) · CC BY-SA · iNaturalist 
(c) Jakkarin Burananit, some rights reserved (CC BY) · CC BY · iNaturalist 
(c) Doreen, some rights reserved (CC BY) · CC BY · iNaturalist 
(c) Ben Costamagna, some rights reserved (CC BY) · CC BY · iNaturalist 
(c) Doreen, some rights reserved (CC BY) · CC BY · iNaturalist
Names and classification
- English
- Military Tentacle Aeolid, military phidiana
Names in 2 more languages
- Japanese
- ヒブサミノウミウシ
- Simplified Chinese
- 軍艦翼蓑海蛞蝓
Other scientific names: Eolis militaris, Phidiana militaris
Similar species
Sunrise Tentacle AeolidCaloria indica
Lined cratenaCratena lineata
Black-horned Egg-eaterFavorinus tsuruganus
Australian Blue DragonPteraeolidia ianthina
Lion Tentacle AeolidCratena simba
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.
- Conservation status as published by GBIF (IUCN Red List).
- 40 open-data records from 1971 to 2025.
- 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.