Eleven-armed seastar

About this species

Coscinasterias muricata is a species of starfish in the family Asteriidae. It is a large 11-armed starfish and occurs in shallow waters in the temperate western Indo-Pacific region.

Text from the Wikipedia article “Coscinasterias muricata”, 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: 954 records
February: 669 records
March: 725 records
April: 768 records
May: 678 records
June: 614 records
July: 594 records
August: 548 records
September: 606 records
October: 643 records
November: 581 records
December: 678 records

Depth and water temperature

Depth

Mostly recorded at 4–37 m · Deepest record: 200 m

0–10 m: 188 records
10–20 m: 35 records
20–30 m: 20 records
30–40 m: 12 records
40–50 m: 9 records
50–60 m: 5 records
60–70 m: 4 records
70–80 m: 2 records
80–90 m: 0 records
90–100 m: 0 records
100–110 m: 2 records
110+ m: 1 records

Water temperature

Recorded in surface water of 12–23 °C

10–12 °C: 2 records
12–14 °C: 18 records
14–16 °C: 34 records
16–18 °C: 14 records
18–20 °C: 6 records
20–22 °C: 10 records
22–24 °C: 4 records

Photos

(c) Javier, some rights reserved (CC BY) · CC BY · iNaturalist
(c) Damon H, some rights reserved (CC BY) · CC BY · iNaturalist
(c) William Harland, some rights reserved (CC BY) · CC BY · iNaturalist
(c) Javier, some rights reserved (CC BY) · CC BY · iNaturalist
(c) Emily Roberts, some rights reserved (CC BY) · CC BY · iNaturalist
(c) Genevieve Early, some rights reserved (CC BY) · CC BY · iNaturalist
(c) M Rutherford, some rights reserved (CC BY) · CC BY · iNaturalist

Names and classification

English: Eleven-armed seastar

Other scientific names: Coscinasterias (Coscinasterias) muricata

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).
1,939 open-data records from 1896 to 2023.
Species data updated November 1, 2026.