Cannonball jellyfish
The cannonball jellyfish is a round, dome-shaped jellyfish that looks a bit like a cannonball. It lives in warm coastal waters on both sides of the Americas and in parts of Asia, and it is common in shallow water near the coast. It matters because it is one of the most common causes of minor jellyfish stings in US and Caribbean waters.1

Com reconèixer-lo
- Dome-shaped bell that can reach 25 cm in diameter1
- The rim of the bell is often coloured with brown pigment1
- A cluster of oral arms under the body, extending out around the mouth1
- Some related species found in the Pacific and South Atlantic are pale to blue in colour1
Sovint es confon amb: Several undescribed Stomolophus species in the Pacific and South Atlantic have pale to blue pigment. They are genetically different from the cannonball jellyfish of the North Atlantic, but they are often misidentified as that species.1
Poder del verí
Milers de cèl·lules urticants petitones es disparen quan alguna cosa les toca.
Què fa el seu verí?
They release a mucus from their nematocysts (stinging cells) that contains a toxin when disturbed. The toxin can cause irregular heart rhythms and problems in the heart's conduction pathways, although this is not common in people. Contact with the nematocysts can be very painful and may cause redness and swelling, and the toxin is also harmful to the eyes.1
Com de perillós és per a les persones?
Perill per a les persones: LleuCom una picada d'abella o menys. Pràcticament inofensiu per a les persones.Cannonball jellyfish are mostly harmless to people. Contact usually causes slight itching or minor eye irritation. They are among the most common causes of minor stings in US and Caribbean waters. Their toxin can cause heart problems in animals and humans, but this does not usually happen.1
Què fa quan té por?
When disturbed, they release a toxic mucus from their nematocysts, which harms small fish nearby and drives away most predators.1
Si pica
- Surt de l'aigua i treu els tentacles que quedin (amb guants o un drap).
- Per a les cubomeduses tropicals: tira vinagre sobre les picades durant almenys 30 segons, demana ajuda i prepara't per fer RCP. Per a les caravel·les portugueses i la majoria de les altres: esbandeix amb aigua de mar i després amb aigua calenta per al dolor.
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 te'n pica un: 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?
fa de llarg com 8 peces de construcció de joguina en filaQue gran és Cannonball jellyfish comparat amb TU?
Només càlculs al teu navegador. No es desa ni s'envia res enlloc.
Com de ràpid va?
Dades
Juvenile portly spider crabs often live in the bell, eating some of the food the jellyfish catches. The jellyfish is not harmed because it can regenerate its tissue. One jellyfish has been seen with up to ten crabs in its bell.1
Jellyfish are commercially harvested as food. In Georgia, jellyball fishing is the state's third largest commercial fishery.1
The endangered leatherback sea turtle is one of their main predators.1
In 2012, El Golfo de Santa Clara in Mexico harvested 20,000 tons of these jellyfish from late April to early July.1
Desmuntamites
Mite: Cannonball jellyfish are dangerous to people.
Veritat: They are mostly harmless to people. Contact usually causes only slight itching or minor eye irritation.1
Per a experts en verins
- Nom científic
- Stomolophus meleagris
- Grup
- Meduses i altres urticants marins
- Família
- Stomolophidae2
- Ordre
- Rhizostomeae
- Continents
- Oceà Atlàntic, Mar Carib, Golf de Mèxic, Golf de Califòrnia, Els oceans
- Cries
- They can reproduce sexually or asexually. Sexual reproduction happens when a cannonball shoots sperm from its mouth and another cannonball catches it. The embryos develop in pouches on the oral arms, then the larvae settle on hard surfaces and grow into polyps.1
- Perill per a les persones
- 1 / 5: Lleu3
D'on surten les dades
- Cannonball jellyfish (Wikipedia (CC BY-SA 4.0))
- Stomolophus meleagris (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.
Tentacles urticants
