Yunohana crab
Gandalfus yunohana
- Usual depth448–1,090 m
- Water temperature23–29 °C
- Best monthsJanuary
- How commonRare
Photo credit: (c) Lycaon, some rights reserved (CC BY-SA) · CC BY-SA · iNaturalist
About this species
Gandalfus yunohana is a species of blind crab in the family Bythograeidae found on hydrothermal vents on the eastern edge of the Philippine Sea Plate south of Japan. Because no light penetrates to such depths, the eyes of G. yunohana are immobile and unpigmented.
Text from the Wikipedia article “Gandalfus yunohana”, 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: 4 records
- February: 0 records
- March: 0 records
- April: 0 records
- May: 2 records
- June: 0 records
- July: 0 records
- August: 0 records
- September: 0 records
- October: 0 records
- November: 0 records
- December: 0 records
Depth and water temperature
Depth
Mostly recorded at 448–1,090 m · Deepest record: 1,090 m
Water temperature
Recorded in surface water of 23–29 °C
Photos
(c) anonymous, some rights reserved (CC BY-SA) · CC BY-SA · iNaturalist
Names and classification
- English
- Yunohana crab
Names in 1 more languages
- Japanese
- ユノハナガニ
Other scientific names: Austinograea yunohana
Similar species
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).
- 24 open-data records from 1998 to 2012.
- Species data updated November 2, 2026.
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