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Blue sea dragon

Glaucus atlanticus

Oor die naam: The generic name Glaucus comes from the Ancient Greek word glaukós, meaning "bluish-grey", "bluish-green" or "gleaming".1

Maak net seerDit maak seer, maar dit sal jou nie ernstig skade doen nie.

Keëlslakke & seekatte

StekeEet: Vleis

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

The blue sea dragon is a small, bright blue sea slug that floats upside down on the open ocean. It drifts with winds and currents in warm and temperate seas around the world. It is special because it steals stinging cells from the animals it eats and uses them as its own weapon.1

Leef in

Warm and temperate oceans worldwide, including South Africa, Europe, eastern Australia, Brazil, India and Thailand1

Atlantiese Oseaan, Stille Oseaan, Indiese Oseaan

Tuis

It lives in the open ocean (the pelagic zone) and is carried by winds and currents. Because it sometimes washes up on shore, people may find it on beaches, for example in Thailand, Spain and Texas.1

Lengte

3 cm (1,2 in)1

Topspoed

omtrent 0,01 km/h (0,01 mph)

Swem, rowwe skatting

Wat eet dit?

It feeds on other floating sea animals, including the Portuguese man o' war and other venomous siphonophores. It bites off chunks of its prey with serrated teeth and a strong jaw.1

Foto van Blue sea dragon — Blue sea dragon. Foto: Sylke Rohrlach. CC BY-SA 4.0, iNaturalist.

Hoe om dit te herken

Usually around 3 cm long1
Floats upside down at the surface, with its blue side facing up1
Silvery grey on its back, which faces down in the water1
Dark blue stripes on its head1
Six finger-like, feathery appendages called cerata1

Word dikwels verwar met: It is closely related to G. marginatus, which is now known to be four separate species living in the Indian and Pacific Oceans. It also shares the name "blue dragon" with Pteraeolidia ianthina and G. marginatus.1

Gifkrag

Steke

Gif kom deur 'n angel uit.

Wat doen sy gif as dit byt of steek?

It does not make its own venom. It takes the stinging cells (nematocysts) from the Portuguese man o' war and stores them in its cerata, a process called kleptocnidy. Because it concentrates this venom, its sting can be stronger than that of the animal it eats. Symptoms can include pain, nausea, vomiting, a rash, redness and blisters.1

Hoe gevaarlik is dit vir mense?

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

Picking up the animal can cause a very painful sting that may be potentially dangerous. Its sting produces symptoms similar to those of the Portuguese man o' war.1

Wat doen dit as dit bang is?

It stores stinging cells from its prey in its cerata and uses them against predators.1

As dit steek

Drukimmobilisasie: draai 'n stewige elastiese verband oor die byt en dan op oor die hele arm of been, spalk dit en hou die persoon heeltemal stil totdat hulp opdaag.
'n Blouring-seekat of keëlslak kan 'n mens se asemhaling laat stop terwyl hy nog wakker is: roep hulp en wees gereed om asemhaling (mond-tot-mond) te gee totdat die ambulans oorneem.

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 Stille Oseaan Atlantiese Oseaan Indiese Oseaan

Hoe groot is dit?

Hoe lank is dit?

omtrent so lank soos 'n skuifspeldstadiger as 'n tuinslak

Hoe groot is Blue sea dragon in vergelyking met JOU?

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

Hoe vinnig is dit?

'n Seeperdjie omtrent 0,0015 km/h (0 mph)

Blue sea dragon omtrent 0,01 km/h (0,01 mph)

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

die moeite werd om te weet

Feite

It can eat the Portuguese man o' war without harm, because it is immune to that animal's stinging cells.1

It floats upside down because its gas-filled stomach sac sits on the wrong side of its body, so its foot becomes its upper surface.1

Its blue colour is thought to reflect harmful ultraviolet sunlight.1

Its countershading, with blue on top and silver-grey below, helps it hide from predators above and below.1

It can lay up to 55 egg strings per hour.1

Vir gifkenners

Wetenskaplike naam: Glaucus atlanticus
Groep: Keëlslakke & seekatte
Familie: Glaucidae2
Orde: Nudibranchia
Kontinente: Atlantiese Oseaan, Stille Oseaan, Indiese Oseaan, Die oseane
Babas: After mating, both partners lay egg strings with up to 20 eggs on each string, often in wood or on carcasses.1
Lewensduur: omtrent 1 jaar1
Gevaar vir mense: 2 / 5: Pynlik3

Waar die feite vandaan kom

Glaucus atlanticus (Wikipedia (CC BY-SA 4.0))
Glaucus atlanticus (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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