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

Ako ho spoznať
- 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
Často sa zamieňa s: 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
Sila jedu
Tisíce malinkých pŕhlivých buniek vystrelia, keď sa ich niečo dotkne.
Čo robí jeho jed?
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
Aké nebezpečné je pre ľudí?
Nebezpečenstvo pre ľudí: MierneAko včelie bodnutie alebo menej. Pre ľudí v podstate neškodné.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
Čo robí, keď sa bojí?
When disturbed, they release a toxic mucus from their nematocysts, which harms small fish nearby and drives away most predators.1
Ak bodne
- Vylez z vody a odstráň zvyšné chápadlá (v rukaviciach alebo cez látku).
- Pri tropických štvorhrankách: polievaj zasiahnuté miesta octom aspoň 30 sekúnd, zavolaj pomoc a buď pripravený na oživovanie (KPR). Pri portugalských vojnových lodiach a väčšine ostatných: opláchni morskou vodou a potom daj na bolesť horúcu vodu.
Vždy najprv zavolaj na tiesňovú linku (112, 000, 911). Toto sú všeobecné rady prvej pomoci, nie lekárska rada. Základy prvej pomoci
Buď v bezpečí
- Nikdy sa nedotýkaj divého zvieraťa, nechytaj ho ani ho nedráždi, aj keď je malé a aj keď vyzerá, že spí alebo je mŕtve.
- Nechaj mu priestor. Ak nejaké stretneš, zostaň pokojný, pomaly cúvni a nechaj ho ísť svojou cestou.
- Ak ťa bodne: zostaň pokojný, nehýb sa, zavolaj na tiesňovú linku (112, 000, 911) alebo sa rýchlo dostaň do nemocnice. Zapamätaj si, ako vyzeralo, fotka pomôže.
Nejde po tebe. Jed používa na chytanie potravy alebo na obranu a oveľa radšej sa schová. Viac o tom, ako zostať v bezpečí
Kde na svete?
Aké je veľké?
Aké je dlhé?
dlhé ako 8 kociek stavebnice v radeAký veľký je Cannonball jellyfish v porovnaní s TEBOU?
Iba matematika v tvojom prehliadači. Nič sa neukladá ani nikam neposiela.
Aké je rýchle?
Fakty
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
Lovec mýtov
Mýtus: Cannonball jellyfish are dangerous to people.
Pravda: They are mostly harmless to people. Contact usually causes only slight itching or minor eye irritation.1
Pre znalcov jedov
- Vedecký názov
- Stomolophus meleagris
- Skupina
- Medúzy a morskí pŕhlivci
- Rodina
- Stomolophidae2
- Rad
- Rhizostomeae
- Kontinenty
- Atlantický oceán, Karibské more, Mexický záliv, Kalifornský záliv, Oceány
- Mláďatá
- 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
- Nebezpečenstvo pre ľudí
- 1 / 5: Mierne3
Odkiaľ sú fakty
- Cannonball jellyfish (Wikipedia (CC BY-SA 4.0))
- Stomolophus meleagris (iNaturalist): mená a klasifikácia.
- Venom Wiki: úroveň nebezpečenstva, typická veľkosť a odhad rýchlosti sú naše vlastné. Pozri, ako ich určujeme: Ako hodnotíme nebezpečenstvo.
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Pŕhlivé chápadlá
