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Black sea nettle

Chrysaora achlyos

Oor die naam: Chrysaora comes from Chrysaor, a figure in Greek mythology, and means "he who has a golden sword". The species name comes from a Greek word meaning mist, darkness or obscurity, which refers to its colour and how rarely it is seen.1

Maak net seerMoenie aanraak nieDit maak seer, maar dit sal jou nie ernstig skade doen nie.

Jellievisse & see-steekdiere

SteektentakelsEet: Vleis

Gevaar vir mense: PynlikDit kan regtig seermaak, maar dit is amper nooit ernstig nie.

The black sea nettle is a large jellyfish with a dark purple to nearly black bell. It lives in the Pacific Ocean off western North America, and it is rare to see except in big swarms that appear in some years. Its stinging tentacles can cause a painful sting to people.1

Leef in

Pacific Ocean off western North America, from Monterey Bay south to southern Baja California and Mexico; sightings reported as far north as British Columbia1

Atlantiese Oseaan, Middellandse See

Tuis

It lives in nearshore waters and is occasionally seen in surface waters, sometimes in very large swarms. Swarms have been recorded off Baja California and southern California.1

Lengte

1 m (3,3 ft)1

Topspoed

omtrent 1,9 km/h (1,2 mph)

Swem, rowwe skatting

Wat eet dit?

It feeds mainly on zooplankton and other jellyfish. It uses its stinging tentacles to immobilise its prey and capture it.1

Foto van Black sea nettle — Black sea nettle. Foto: Port of San Diego. CC BY 4.0, iNaturalist.

Hoe om dit te herken

The bell is an opaque dark purple to nearly black colour.1
The edge of the bell has a lighter brown, net-like (reticulated) pattern.1
The bell can reach about 1 metre across, and the oral arms can extend 5 or 6 metres.1
There are marginal sense organs around the bell edge, one after every set of 3 tentacles, 8 in total.1

Word dikwels verwar met: No other West Coast jelly that visits nearshore waters has this dark pigmentation, so the very dark colour is the main way to tell it apart.1

Gifkrag

Steektentakels

Duisende piepklein steekselle skiet af wanneer iets aan hulle raak.

Wat doen sy gif as dit byt of steek?

Each tentacle is covered in thousands of microscopic stinging cells called nematocysts. When touched, they fire a filament that injects toxins, which can kill smaller prey or stun predators. In people, the sting is usually not lethal but is painful and can last for forty minutes.1

Hoe gevaarlik is dit vir mense?

Gevaar vir mense: PynlikDit kan regtig seermaak, maar dit is amper nooit ernstig nie.

The sting is usually not lethal to people, but it is painful and can last for about forty minutes.1

Wat doen dit as dit bang is?

Its stinging tentacles fire venom-filled filaments on contact, which stun or deter anything that threatens it.1

As dit steek

Klim uit die water en pluk enige tentakels af (met handskoene of 'n lap).
Vir tropiese kubuskwalle: gooi vir minstens 30 sekondes asyn oor die steke, roep hulp en wees gereed om KPR te doen. Vir bloublasies en die meeste ander: spoel af met seewater, dan warm water vir die pyn.

Bel altyd eers jou noodnommer (112, 000, 911). Dit is algemene noodhulpraad, nie mediese advies nie. Noodhulp-basiese beginsels

Bly veilig

Moet nooit aan 'n wilde dier raak, dit vang of terg nie, selfs nie 'n kleintjie nie, en selfs nie as dit lyk of dit slaap of dood is nie.
Gee dit spasie. As jy een raakloop, bly kalm, stap stadig terug en laat dit sy eie pad gaan.
As een jou steek: bly kalm, bly stil, bel jou noodnommer (112, 000, 911) of kom vinnig by 'n hospitaal uit. Onthou hoe dit gelyk het, 'n foto help.

Dit is nie uit om jou te kry nie. Dit gebruik sy gif om kos te vang of om homself te beskerm, en kruip baie eerder weg. Meer oor veilig bly

Waar in die wêreld?

Afrika Asië Europa Noord-Amerika Suid-Amerika Australië & Oseanië Atlantiese Oseaan Middellandse See

Hoe groot is dit?

Hoe lank is dit?

so lank soos 2 huiskatte neus tot stertso lank soos 6 piesangs punt aan puntkan die lengte van 'n groot swembad (50 m) in 95 sekondes swem

Hoe groot is Black sea nettle in vergelyking met JOU?

Net wiskunde in jou blaaier. Niks word gestoor of enige plek heen gestuur nie.

Hoe vinnig is dit?

'n Tuinslak omtrent 0,05 km/h (0,03 mph)

Black sea nettle omtrent 1,9 km/h (1,2 mph)

'n Mens wat swem omtrent 3 km/h (1,9 mph)

die moeite werd om te weet

Feite

It is thought to be the largest invertebrate described in the 20th century.1

Its stomach is lined with fibrous vessels that attach to prey, and its mouth-like openings, called darkmaws, close when exposed to bright light.1

It was only officially described in 1997, after large groups were found on the Pacific coast.1

Its swarms seem to coincide with red tides, which are blooms of the zooplankton it feeds on.1

Vir gifkenners

Wetenskaplike naam: Chrysaora achlyos
Groep: Jellievisse & see-steekdiere
Familie: Pelagiidae2
Orde: Semaeostomeae
Kontinente: Atlantiese Oseaan, Middellandse See, Die oseane
Gevaar vir mense: 2 / 5: Pynlik3

Waar die feite vandaan kom

Chrysaora achlyos (Wikipedia (CC BY-SA 4.0))
Chrysaora achlyos (iNaturalist): name en klassifikasie.
Venom Wiki: die gevaarvlak, die tipiese grootte en die spoedskatting is ons eie. Kyk hoe ons dit uitwerk: Hoe ons gevaar gradeer.

Elke feit op hierdie bladsy het 'n nommer wat na sy bron wys. As ons iets verkeerd het, jammer, ons is dierfanatici, nie 'n wetenskaplike joernaal nie. Laat weet ons by [email protected] en ons maak dit reg.

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