Hyphalaster inermis

Other invertebrates
IUCN: Not evaluated

Usual depth4,823–4,846 m
Water temperature-2–29 °C
Best monthsMay and July
How commonOccasional

All species

Where and when

Where it has been recorded

Worldwide

Loading the map

Best months

Worldwide (open data)

January: 6 records
February: 11 records
March: 5 records
April: 4 records
May: 19 records
June: 6 records
July: 13 records
August: 10 records
September: 2 records
October: 4 records
November: 4 records
December: 2 records

Depth and water temperature

Depth

Mostly recorded at 4,823–4,846 m · Deepest record: 5,420 m

170–180 m: 1 records
180–190 m: 0 records
190–200 m: 0 records
200–210 m: 0 records
210–220 m: 0 records
220–230 m: 0 records
230–240 m: 0 records
240–250 m: 0 records
250–260 m: 0 records
260–270 m: 0 records
270–280 m: 0 records
280+ m: 1,661 records

Water temperature

Recorded in surface water of -2–29 °C

-2–0 °C: 12 records
0–2 °C: 3 records
2–4 °C: 0 records
4–6 °C: 0 records
6–8 °C: 0 records
8–10 °C: 5 records
10–12 °C: 8 records
12–14 °C: 48 records
14–16 °C: 879 records
16–18 °C: 4 records
18–20 °C: 3 records
20–22 °C: 16 records
22–24 °C: 2 records
24–26 °C: 2 records
26–28 °C: 11 records
28–30 °C: 6 records

Names and classification

Other scientific names: Hyphalaster antonii, Hyphalaster fortis, Hyphalaster gracilis, Hyphalaster moseri, Hyphalaster parfaiti

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).
1,759 open-data records from 1883 to 2024.
Species data updated November 3, 2026.

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