Hardwick's Sea Star

Luidia hardwicki

Other invertebrates
IUCN: Not evaluated

Usual depth38–112 m
Water temperature19–30 °C
Best monthsMay, July, and August
How commonRare

All species

Photo credit: (c) ig: underwater.logs, some rights reserved (CC BY) · CC BY · iNaturalist

Where and when

Where it has been recorded

Worldwide

Loading the map

Best months

Worldwide (open data)

January: 0 records
February: 5 records
March: 4 records
April: 2 records
May: 9 records
June: 7 records
July: 8 records
August: 13 records
September: 6 records
October: 3 records
November: 7 records
December: 1 records

Depth and water temperature

Depth

Mostly recorded at 38–112 m · Deepest record: 213.2 m

30–40 m: 4 records
40–50 m: 6 records
50–60 m: 14 records
60–70 m: 4 records
70–80 m: 1 records
80–90 m: 3 records
90–100 m: 1 records
100–110 m: 1 records
110–120 m: 2 records
120–130 m: 0 records
130–140 m: 0 records
140+ m: 3 records

Water temperature

Recorded in surface water of 19–30 °C

18–20 °C: 3 records
20–22 °C: 6 records
22–24 °C: 3 records
24–26 °C: 6 records
26–28 °C: 11 records
28–30 °C: 39 records

Photos

Names and classification

English: Hardwick's Sea Star

Names in 2 more languages

Japanese: シュイロスナヒトデ
Simplified Chinese: 哈氏砂海星

Other scientific names: Luidia forficifer, Petalaster hardwicki

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.
Conservation status as published by GBIF (IUCN Red List).
241 open-data records from 1840 to 2020.
Species data updated November 4, 2026.

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