Other animals › Diadematidae
Savigny's Longspine Sea Urchin
Diadema savignyi
25 photos
Study shows up to four per card, from different observers, so you learn the species rather than one picture. Heart the good ones and swap any you do not like.
Photos you add are credited to you, and you keep the copyright.
Easily confused with
Banded Sea UrchinEchinothrix calamaris
Black Longspine UrchinDiadema setosumStudy checks a spoken answer against these, and tells you which one you named.
Where it is recorded
| Hawaii | 774 |
|---|---|
| United States | 392 |
| Australia | 52 |
| New South Wales | 49 |
| Indonesia | 13 |
| South Africa | 11 |
| KwaZulu-Natal | 7 |
| Taiwan | 6 |
| Guam | 5 |
| China | 5 |
Counts show where people looked, not only where it lives.
Traits
Physical
- RegenerationCan regrow lost body partsFrom its classification
Classification
| Kingdom | Animals · Animalia |
|---|---|
| Phylum | Echinoderms · Echinodermata |
| Class | Sea Urchins, Sand Dollars, and Heart Urchins · Echinoidea |
| Order | Diadematoida |
| Family | Diadematidae |
| Genus | Diadema |
Sources
- Names, taxonomy and observation counts: www.inaturalist.org
- Photos and recordings: the creator and source are on each one.
- How much to rely on each source
Remember the name next time.
Practise Savigny's Longspine Sea Urchin with real photos from different observers. Say the name out loud, and it comes back just before you would forget it.