
DiscoverSpeciesOther invertebrates
Monachaster sanderi
- Usual depth6–24 m
- Water temperature24–28 °C
- Best monthsMay and October
- How commonRare
Photo credit: (c) Maguelone Grateau, some rights reserved (CC BY-SA) · CC BY-SA · iNaturalist
About this species
Monachaster sanderi is a species of sea stars in the family Oreasteridae. It is the sole species in the genus Monachaster.
Text from the Wikipedia article “Monachaster”, 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: 0 records
- February: 0 records
- March: 2 records
- April: 1 records
- May: 3 records
- June: 0 records
- July: 1 records
- August: 0 records
- September: 0 records
- October: 4 records
- November: 0 records
- December: 0 records
Depth and water temperature
Depth
Mostly recorded at 6–24 m · Deepest record: 53.5 m
Water temperature
Recorded in surface water of 24–28 °C
Photos

no rights reserved · CC0 1.0 · iNaturalist
Names and classification
Other scientific names: Goniodiscus sanderi, Monachaster umbonatus
Similar species
Grainy Cushion StarChoriaster granulatus
Cushion starCulcita novaeguineae
Pincushion CushionstarCulcita schmideliana
Panamic Cushion StarPentaceraster cumingi
Chocolate Chip Sea StarProtoreaster nodosus
Brick Red Sea StarAnthaster valvulatus
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).
- 45 open-data records from 1892 to 2010.
- Species data updated November 4, 2026.
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