DiscoverSpeciesOther invertebrates
Japanese sea lily
Metacrinus rotundus
- Usual depth149–329 m
- Water temperature14–29 °C
- Best monthsMay, August, and October
- How commonRare
About this species
Metacrinus rotundus, the Japanese sea lily, is a species of stalked crinoid in the family Isselicrinidae. It is a species found off the west coast of Japan, near the edge of the continental shelf at a depth of around 100 to 150 metres deep. This is the shallowest-living species among the extant stalked crinoids.
Text from the Wikipedia article “Metacrinus rotundus”, 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: 0 records
- February: 1 records
- March: 1 records
- April: 2 records
- May: 9 records
- June: 3 records
- July: 4 records
- August: 8 records
- September: 1 records
- October: 6 records
- November: 3 records
- December: 2 records
Depth and water temperature
Depth
Mostly recorded at 149–329 m · Deepest record: 865 m
Water temperature
Recorded in surface water of 14–29 °C
Names and classification
- English
- Japanese sea lily
Names in 1 more languages
- Japanese
- トリノアシ
Other scientific names: Metacrinus cyaneus, Metacrinus multisegmentatus, Metacrinus Stewarti
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).
- 72 open-data records from 1900 to 2007.
- Species data updated November 4, 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.