DiscoverSpeciesOther invertebrates
Common long-spined urchin
Diadema paucispinum
- Usual depth2–39 m
- Water temperature23–29 °C
- Best monthsFebruary, March, and June
- How commonRare
Photo credit: (c) Alie / C.A. Kratzer, some rights reserved (CC BY-SA) · CC BY-SA · iNaturalist
About this species
Diadema paucispinum, the long-spined sea urchin, is a species of sea urchin in the family Diadematidae. It is found in the western Indo-Pacific Ocean and in Hawaii and other east Pacific islands.
Text from the Wikipedia article “Diadema paucispinum”, 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: 10 records
- February: 18 records
- March: 17 records
- April: 3 records
- May: 3 records
- June: 12 records
- July: 8 records
- August: 11 records
- September: 10 records
- October: 3 records
- November: 6 records
- December: 0 records
Depth and water temperature
Depth
Mostly recorded at 2–39 m · Deepest record: 46 m
Water temperature
Recorded in surface water of 23–29 °C
Photos
(c) Cricket Raspet, some rights reserved (CC BY) · CC BY · iNaturalist 
(c) Floyd A. Reed, some rights reserved (CC BY) · CC BY · iNaturalist
Names and classification
- English
- Common long-spined urchin, Nadel-Seeigel, common long-spined urchin, Indo-Pacific Long-spined Urchin
Other scientific names: Centrechinus paucispinus
Similar species
Savigny's Longspine Sea UrchinDiadema savignyi
Long-spined Sea UrchinCentrostephanus rodgersii
Blue-spotted UrchinAstropyga radiata
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).
- 115 open-data records from 1902 to 2017.
- Species data updated November 2, 2026.
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