Heliocidaris bajulus

Other invertebrates
IUCN: Not evaluated

Usual depth1–237 m
Water temperature14–15 °C
Best monthsJanuary, April, and June
How commonRare

All species

Where and when

Where it has been recorded

Worldwide

Loading the map

Best months

Worldwide (open data)

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

Depth and water temperature

Depth

Mostly recorded at 1–237 m · Deepest record: 237 m

0–10 m: 1 records
10–20 m: 0 records
20–30 m: 0 records
30–40 m: 0 records
40–50 m: 0 records
50–60 m: 0 records
60–70 m: 0 records
70–80 m: 0 records
80–90 m: 0 records
90–100 m: 0 records
100–110 m: 1 records
110+ m: 3 records

Water temperature

Recorded in surface water of 14–15 °C

12–14 °C: 8 records
14–16 °C: 18 records

Names and classification

Other scientific names: Pachechinus bajulus, Pachycentrotus bajulus

Similar species

Western Pacific purple sea urchin
Heliocidaris erythrogramma
Heliocidaris crassispina
Heliocidaris tuberculata
Heliocidaris australiae
Rock-boring urchin
Echinometra mathaei
Oblong Sea Urchin
Echinometra oblonga

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).
35 open-data records from 1928 to 2008.
Species data updated November 3, 2026.

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