Hydromyles globulosus
- Usual depth0–75 m
- Water temperature20–30 °C
- Best monthsFebruary and May
- How commonRare
About this species
Hydromyles globulosus is the only species of sea slug in the genus Hydromyles, and the only member of the family Hydromylidae. It is commonly found in the Indo-Pacific Ocean. The species is pelagic, carnivorous and viviparous. They are unique among sea angels in that they brood their young. Their young develop within the body of their mother, and emerge as juveniles. They are capable of producing an ink-like substance, which they release if disturbed.
Text from the Wikipedia article “Hydromyles globulosus”, 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: 3 records
- February: 14 records
- March: 1 records
- April: 1 records
- May: 22 records
- June: 6 records
- July: 6 records
- August: 3 records
- September: 2 records
- October: 6 records
- November: 8 records
- December: 12 records
Depth and water temperature
Depth
Mostly recorded at 0–75 m · Deepest record: 75 m
Water temperature
Recorded in surface water of 20–30 °C
Names and classification
Names in 1 more languages
- Japanese
- マメツブハダカカメガイ
Other scientific names: Cymodocea diaphana, Euribia gaudichaudi, Hydromyles globulosa, Psyche globulosa
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).
- 77 open-data records from 1978 to 2025.
- Species data updated November 3, 2026.
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