Black long-spined urchin
The black long-spined urchin is a sea urchin with very long, hollow spines. It lives on coral reefs, sand flats and seagrass beds across the Indo-Pacific, and it is one of the most widespread sea urchins in that region. Its spines can deliver a mild venom, so it is best to watch where you put your feet.1

Com reconèixer-lo
- Black, near-spherical body (test) with extremely long, narrow, hollow spines, often black but sometimes brown-banded1
- Five white spots on the body, which separate it from other Diadema species1
- A bright orange ring around the periproctal cone (the 'anal cone'), which is often mistaken for an eye1
- Bluish spots on the genital plates and a line of blue spots along the body1
- Adults are no more than 70 mm across the body and about 40 mm high1
Sovint es confon amb: Other Diadema species are similar in shape and spines, but they lack the five white spots that mark this species. Its orange ring and blue spots also help to tell it apart.1
Poder del verí
Unes punxes esmolades porten el verí. Trepitjar-lo o agafar-lo fa mal.
Què fa el seu verí?
The spines are hollow and contain a mild venom. The toxin mostly causes swelling and pain, which spreads gradually over several hours. The venom is not fatal to humans. The spines themselves are a bigger problem, because they are brittle and needle-like, break off in flesh and are difficult to remove.1
Com de perillós és per a les persones?
Perill per a les persones: DolorósPot fer molt de mal, però gairebé mai no és greu.The venom is only mild, and the species is not considered a serious threat to humans. Stepping on it can cause painful stings.1
Què fa quan té por?
When threatened by a sudden impact or by spines snapping, it rapidly flips its body over and 'runs' on the tips of its longest spines.1
Si se't claven les seves punxes
- Posa la ferida en aigua calenta, tan calenta com la persona pugui aguantar sense cremar-se, i busca ajuda mèdica per treure les punxes. No les intentis treure tu gratant.
Truca sempre primer al número d'emergències (112, 000, 911). Això són pautes generals de primers auxilis, no consells mèdics. Primers auxilis bàsics
Estigues segur
- No toquis, atrapis ni molestis mai un animal salvatge, encara que sigui petit i encara que sembli adormit o mort.
- Deixa-li espai. Si en trobes un, mantén la calma, recula a poc a poc i deixa que segueixi el seu camí.
- Si se't claven les seves punxes: mantén la calma, no et moguis, truca al número d'emergències (112, 000, 911) o ves de pressa a un hospital. Recorda com era, una foto ajuda.
No va a per tu. Fa servir el verí per caçar o per defensar-se, i prefereix mil vegades amagar-se. Més sobre com estar segur
On del món?
Que gran és?
Quant fa de llarg?
Quant pesa?
fa de llarg com 2 peces de construcció de joguina en fila
més lent que un cargol de jardíQue gran és Black long-spined urchin comparat amb TU?
Només càlculs al teu navegador. No es desa ni s'envia res enlloc.
Com de ràpid va?
Dades
It can move 760 mm in just 7 seconds by rolling and walking on the tips of its spines.1
It has no eye, but it has a diffuse light-sensing system that lets it detect light levels and the size and colour of objects.1
In 2006, living specimens were found off Turkey, making it the first invasive Erythrean sea urchin recorded in the Mediterranean.1
Goose barnacles of the genus Microlepas are known to live on it as parasites.1
It is considered one of the oldest living species in its genus, Diadema.1
Desmuntamites
Mite: Black long-spined urchins are deadly and their stings can kill people.
Veritat: Their venom is mild and is not fatal to humans. The main problems are pain, swelling and spines that break off in the skin.1
Per a experts en verins
- Nom científic
- Diadema setosum
- Grup
- Eriçons, estrelles i cucs
- Família
- Diadematidae2
- Ordre
- Diadematoida
- Continents
- Oceà Índic, Oceà Pacífic, Mar Roja, Mar del Corall, Mar de les Filipines, Mar d'Aràbia i golf Pèrsic, Mar de Timor i d'Arafura, Golf de Bengala, Els oceans
- Cries
- It is a broadcast spawner, releasing eggs and sperm into the water. Spawning happens seasonally or year-round depending on the location, and in some places it follows the full moon.1
- Perill per a les persones
- 2 / 5: Dolorós3
D'on surten les dades
- Diadema setosum (Wikipedia (CC BY-SA 4.0))
- Diadema setosum (iNaturalist): noms i classificació.
- Venom Wiki: el nivell de perill, la mida típica i la velocitat estimada són nostres. Mira com els calculem: Com valorem el perill.
Cada dada d'aquesta pàgina té un número que porta a la seva font. Si ens hem equivocat en alguna cosa, perdona, som fans dels animals, no una revista científica. Escriu-nos a [email protected] i ho arreglarem.
Punxes verinoses

