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Lion's mane jellyfish

Cyanea capillata

Om navnet: It is named for its showy, trailing tentacles, which look like a lion's mane.1

Gør bare ondtRør ikkeDet gør ondt, men det skader dig ikke alvorligt.

Gopler & andre brændende havdyr

Brændende tentaklerSpiser: Kød

Fare for mennesker: SmertefuldDet kan gøre rigtig ondt, men det er næsten aldrig alvorligt.

The lion's mane jellyfish is one of the largest jellyfish known, and its bell can be over 2 m across in the far north. It lives in cold northern seas, including the English Channel, the North Sea and the Irish Sea. Its long, trailing stinging tentacles can wash up on beaches in late summer and autumn.1

Lever i

Arctic, northern Atlantic and northern Pacific Oceans, including the English Channel, North Sea, Irish Sea and western Scandinavian waters1

Det Nordlige Ishav, Atlanterhavet, Stillehavet, Nordsøen

Forside

It stays mostly near the surface, at no more than 20 m deep, and drifts with ocean currents. Late summer and autumn are when most are seen, as currents sweep them onto beaches.1

Længde

50 cm til 2,1 m (1,6 ft til 6,9 ft)1

Tophastighed

cirka 1,3 km/t (0,81 mph)

Svømmende, groft gæt

Hvad spiser det?

It eats fish, zooplankton and smaller jellyfish. It uses its stinging tentacles to catch, pull in and eat its prey.1

Foto af Lion's mane jellyfish — Lion's mane jellyfish. Foto: W.carter. CC0, Wikimedia Commons.

Sådan genkender du det

Bell is divided into eight lobes, giving it the look of an eight-point star1
Young ones are light orange or tan, darkening to red and purple as they grow1
Long, thin, trailing tentacles, with many more tentacles around the mouth1
Bell is often about 50 cm across in lower latitudes, and much larger in the far north1
Usually found alone, rarely in groups1

Forveksles ofte med: The blue jellyfish (Cyanea lamarckii) is sometimes found in the same waters. It is blue rather than red, and smaller, with a bell of about 10 to 20 cm across.1

Giftkraft

Brændende tentakler

Tusindvis af bittesmå brændeceller affyres, når noget rører ved dem.

Hvad gør dets gift, når det bider eller stikker?

Its tentacles carry stinging cells, called nematocysts, which inject a sting when touched. The sting is very painful and feels like intense itching or burning, and it can cause temporary pain and redness where the skin was touched. Stings across large parts of the body can cause whole-body (systemic) effects, and medical attention is recommended in that case.1

Hvor farligt er det for mennesker?

Fare for mennesker: SmertefuldDet kan gøre rigtig ondt, men det er næsten aldrig alvorligt.

Stings are not known to be fatal in healthy people, and there is normally no real danger, though people with special allergies may be at risk. Rare severe stings in deep water can cause panic, which may lead to drowning. In July 2010, about 150 beachgoers were stung by the remains of one broken-up jellyfish on a beach in New Hampshire, US.1

Hvis det stikker

Vinegar can be used to deactivate the stinging cells. If you have touched a large number of tentacles, get medical attention after exposure.1
Kom op af vandet, og pil alle tentakler af (med handsker eller en klud).
Ved tropiske kassegopler: Hæld eddike på stikkene i mindst 30 sekunder, ring efter hjælp, og vær klar til at give hjerte-lunge-redning (HLR). Ved portugisiske orlogsmænd og de fleste andre: Skyl med havvand, derefter varmt vand mod smerterne.

Ring altid først til dit alarmnummer (112, 000, 911). Dette er generel førstehjælpsvejledning, ikke lægelig rådgivning. Grundlæggende førstehjælp

Pas på dig selv

Rør aldrig ved, fang eller dril et vildt dyr, heller ikke et lille et, og heller ikke hvis det ser ud til at sove eller være dødt.
Giv det plads. Hvis du møder et, så bliv rolig, træd langsomt tilbage, og lad det gå sin egen vej.
Hvis et stikker dig: Bevar roen, hold dig i ro, ring til dit alarmnummer (112, 000, 911), eller kom hurtigt på hospitalet. Husk, hvordan det så ud, et billede hjælper.

Det er ikke ude efter dig. Det bruger sin gift til at fange føde eller beskytte sig selv, og det gemmer sig meget hellere. Mere om sikkerhed

Hvor i verden?

Afrika Asien Europa Nordamerika Sydamerika Australien & Oceanien Stillehavet Atlanterhavet Det Nordlige Ishav Nordsøen

Hvor stort er det?

Hvor langt er det?

lige så lang som 4 huskatte fra snude til halelige så lang som 12 bananer på rækkekunne svømme længden af et stort svømmebassin (50 m) på 140 sekunder

Hvor stor er Lion's mane jellyfish i forhold til DIG?

Bare matematik i din browser. Intet bliver gemt eller sendt nogen steder hen.

Hvor hurtigt er det?

En havesnegl cirka 0,05 km/t (0,03 mph)

Lion's mane jellyfish cirka 1,3 km/t (0,81 mph)

Et menneske, der svømmer cirka 3 km/t (1,9 mph)

værd at vide

Fakta

The longest recorded tentacles were 36.6 m long, longer than a blue whale.1

Its tentacles can still sting for up to 25 days after they have detached from the jellyfish.1

Each of the eight lobes of its bell has about 70 to 150 tentacles, and it has around 1,200 tentacles near its mouth.1

The leatherback sea turtle feeds almost exclusively on lion's mane jellyfish in large numbers during summer around Eastern Canada.1

Unlike most jellyfish that drift in groups, the lion's mane is completely solitary.1

Myteknuser

Myte: The lion's mane jellyfish is the longest animal in the world.

Sandhed: This claim was made on a TV show, but it was corrected. A bootlace worm reported in 1864 was said to be over 55 m long, and that report is doubted because bootlace worms can stretch well beyond their natural length. If that report is wrong, the lion's mane would be the longest animal.1

For gifteksperter

Videnskabeligt navn: Cyanea capillata
Gruppe: Gopler & andre brændende havdyr
Familie: Cyaneidae2
Orden: Semaeostomeae
Kontinenter: Det Nordlige Ishav, Atlanterhavet, Stillehavet, Nordsøen, Oceanerne
Unger: The female carries fertilised eggs in a tentacle, and they grow into larvae that settle on a hard surface and become polyps, which then produce young jellyfish called ephyrae.1
Levetid: cirka 1 år1
Fare for mennesker: 2 / 5: Smertefuld3

Hvor fakta kommer fra

Lion's mane jellyfish (Wikipedia (CC BY-SA 4.0))
Cyanea capillata (iNaturalist): navne og klassifikation.
Venom Wiki: fareniveauet, den typiske størrelse og hastighedsgættet er vores egne. Se, hvordan vi regner dem ud: Sådan vurderer vi faren.

Hvert faktum på denne side har et nummer, der peger på kilden. Hvis vi har taget fejl, så undskyld, vi er dyrefans, ikke et videnskabeligt tidsskrift. Skriv til os på [email protected], så retter vi det.

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