#4978 · 🪼 jellyfish, starfish, worms & co
Black Longspine Urchin
🇳🇱 Diadeemzee-egel ·Diadema setosum
10 photos from iNaturalist (Creative Commons) · credits & licences
- 1. © Patrick Randall · CC BY-NC-SA 4.0
- 2. © Stergios Vasilis · CC BY-NC-ND 4.0
- 3. © Quartl · CC BY-SA 4.0
- 4. © Roberto Pillon · CC BY-NC 4.0
- 5. © Tobias Westmeier · CC BY-NC 4.0
- 6. © Stergios Vasilis · CC BY-NC-ND 4.0
- 7. © Albertini maridom · CC BY-NC 4.0
- 8. © Tobias Westmeier · CC BY-NC 4.0
- 9. © markus lilje · CC BY-NC-ND 4.0
- 10. © 大郭 · CC BY-NC 4.0
what is it?
Diadema setosum is a species of long-spined sea urchin belonging to the family Diadematidae. It is a typical sea urchin, with extremely long, hollow spines that are mildly venomous. D. setosum differs from other Diadema with five, characteristic white dots that can be found on its body. The species can be found throughout the Indo-Pacific region, from Australia and Africa to Japan and the Red Sea. Despite being capable of causing painful stings when stepped upon,...
base stats
Bars compare against all animals on log scales: up to 300,000 Dutch and 600,000 worldwide sightings (the most-seen species), 150 t (blue whale), 30 m and 400 years (Greenland shark).
fun facts
- No confirmed wild sightings in the Netherlands on iNaturalist: you'd have to travel for this one.
- 4,282 observations worldwide on iNaturalist.
fact sheet
- English
- Black Longspine Urchin
- Nederlands
- Diadeemzee-egel
- scientific name
- Diadema setosum
- class
- Echinoidea
- order
- Diadematoida
- family
- Diadematidae
- sightings in NL
- 0
- sightings in Europe
- 320
- sightings worldwide
- 4,282
- GBIF records in NL
- 0
- weight
- —
- length
- —
- lifespan
- —
relatives· Diadematidae
Sources: iNaturalist taxon 199812, Wikidata Q2270025, GBIF 5721108, Wikipedia (EN), Wikipedia (NL). Intro text from Wikipedia (CC BY-SA 4.0).Updated 2026-10-24.