Mesocentrotus nudus

Where and when

Where it has been recorded

Worldwide

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Best months

Worldwide (open data)

January: 1 records
February: 1 records
March: 2 records
April: 3 records
May: 27 records
June: 14 records
July: 30 records
August: 18 records
September: 31 records
October: 10 records
November: 2 records
December: 1 records

Depth and water temperature

Depth

Mostly recorded at 0–183 m · Deepest record: 183 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: 1 records
90–100 m: 0 records
100–110 m: 0 records
110+ m: 1 records

Water temperature

Recorded in surface water of 6–25 °C

6–8 °C: 1 records
8–10 °C: 0 records
10–12 °C: 0 records
12–14 °C: 3 records
14–16 °C: 1 records
16–18 °C: 0 records
18–20 °C: 5 records
20–22 °C: 1 records
22–24 °C: 0 records
24–26 °C: 1 records

Photos

(c) ivansemenkov, some rights reserved (CC BY) · CC BY · iNaturalist
(c) Alexander A. Fomichev, some rights reserved (CC BY) · CC BY · iNaturalist
(c) Alexander A. Fomichev, some rights reserved (CC BY) · CC BY · iNaturalist
(c) Георгий Виноградов (Georgy Vinogradov), some rights reserved (CC BY) · CC BY · iNaturalist
(c) Дмитрий Дунин, some rights reserved (CC BY) · CC BY · iNaturalist
(c) Anastasiia Samokhvalova, some rights reserved (CC BY) · CC BY · iNaturalist
(c) Dmitry Ivanov, some rights reserved (CC BY) · CC BY · iNaturalist

Names and classification

Names in 2 more languages

Japanese: Murasaki-uni-modoki, キタムラサキウニ
Korean: 둥근성게

Other scientific names: Strongylocentrotus nudus, Strongylocentrotus undus, Toxocidaris nuda

Similar species

Hemicentrotus pulcherrimus

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).
72 open-data records from 1899 to 2026.
Species data updated November 4, 2026.