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By-the-wind sailor

Velella velella

O imenu: Its common name refers to its small sail, which catches the wind and carries the animal across the sea.1

NeškodljivaZa ljudi neškodljiva. Ni razloga za skrb.

Meduze in morski ožigalkarji

Ožigalne lovkeJe: Meso

Nevarnost za ljudi: BlagaKot čebelji pik ali manj. Za ljudi praktično neškodljiva.

The by-the-wind sailor is a small, deep blue animal that floats on the surface of the open ocean. It is not a single creature but a colony of tiny linked animals, and it moves by catching the wind with a small stiff sail. Its stinging tentacles are generally harmless to people, but they can irritate the skin.1

Živi v

Warm and temperate waters of all the world's oceans1

Tihi ocean, Atlantski ocean, Indijski ocean, Sredozemsko morje, Južni ocean, Antarktika

Domov

It lives at the surface of the open ocean, floating with its sail above the water and its polyps hanging about 1 cm below. Under certain winds, thousands can be washed up on beaches, such as along the West Coast of North America, the west coast of Ireland and Hayle in Cornwall, England.1

Dolžina

7 cm (2,8 in)1

Največja hitrost

približno 1 km/h (0,62 mph)

Plavanje, groba ocena

Kaj je?

It eats mostly plankton. It catches prey with tentacles that hang down in the water and bear stinging cells called nematocysts.1

Fotografija: By-the-wind sailor — By-the-wind sailor. Fotografija: Niki Hubbard. CC BY 4.0, iNaturalist.

Kako jo prepoznaš

Usually deep blue in colour1
A small, stiff sail projects above the water1
Most are less than about 7 cm long1
Tentacles hang down into the water below the float1

Moč strupa

Ožigalne lovke

Na tisoče drobnih ožigalnih celic se sproži, ko se jih kaj dotakne.

Kaj naredi njen strup, ko ugrizne ali piči?

Its nematocysts contain toxins that are effective against its prey, which are mostly plankton. The nematocysts are relatively benign to humans, but each person may respond differently to the toxin. Contact may cause irritation to exposed skin.1

Kako nevarna je za ljudi?

Nevarnost za ljudi: BlagaKot čebelji pik ali manj. Za ljudi praktično neškodljiva.

It is relatively harmless to humans. Its main effect is possible skin irritation after contact. Mass strandings can leave large numbers of dying and rotting animals on beaches.1

Če piči

Pojdi iz vode in odstrani lovke (z rokavicami ali s krpo).
Pri tropskih kockastih meduzah: pike vsaj 30 sekund polivaj s kisom, pokliči pomoč in bodi pripravljen na oživljanje (TPO). Pri portugalskih ladjicah in večini drugih: izperi z morsko vodo, nato pa za bolečino uporabi vročo vodo.

Vedno najprej pokliči številko za klic v sili (112, 000, 911). To so splošna navodila za prvo pomoč, ne zdravniški nasvet. Osnove prve pomoči

Ostani varen

Nikoli se ne dotikaj divje živali, je ne lovi in je ne draži, tudi če je majhna in tudi če je videti, kot da spi ali je mrtva.
Pusti ji prostor. Če jo srečaš, ostani miren, počasi stopi nazaj in jo pusti, da gre svojo pot.
Če te piči: ostani miren, ne premikaj se, pokliči številko za klic v sili (112, 000, 911) ali hitro pojdi v bolnišnico. Zapomni si, kako je izgledala, fotografija pomaga.

Ne preži nate. Strup uporablja, da ulovi hrano ali se zaščiti, in se veliko raje skrije. Več o varnosti

Kje na svetu?

Afrika Azija Evropa Severna Amerika Južna Amerika Avstralija in Oceanija Antarktika Tihi ocean Atlantski ocean Indijski ocean Južni ocean Sredozemsko morje

Kako velika je?

Kako dolga je?

dolga kot 2 kock za igranje v vrstizmore preplavati dolžino velikega bazena (50 m) v 180 sekundah

Kakšne velikosti je By-the-wind sailor v primerjavi s TABO?

Samo matematika v tvojem brskalniku. Nič se ne shrani in nič se nikamor ne pošlje.

Kako hitra je?

Vrtni polž približno 0,05 km/h (0,03 mph)

By-the-wind sailor približno 1 km/h (0,62 mph)

Človek, ki plava približno 3 km/h (1,9 mph)

vredno vedeti

Dejstva

Its floating colonies are mirror images of each other, either 'left-handed' or 'right-handed', and this affects where they drift. In the northern Pacific, one form tends to drift to North America and the other to eastern Asia, such as Japan.1

Each blue 'animal' with a sail is really a colony of linked polyps that share food through a canal system.1

Each colony is either all male or all female.1

Its sail is not a fin. It works like a sail, so the animal tends to drift downwind at a small angle to the wind.1

Its tiny jellyfish carry zooxanthellae, single-celled organisms that use sunlight to provide energy, a feature also found in corals.1

It has no means of moving other than its sail, so it depends on prevailing winds, and mass strandings on beaches happen in many parts of the world.1

Razbijalec mitov

Mit: Each blue sail is a single, simple animal.

Resnica: Each apparent individual is a colony of many connected polyps that share food and divide the work between feeding, reproductive and protective polyps.1

Za strokovnjake za strupe

Znanstveno ime: Velella velella
Skupina: Meduze in morski ožigalkarji
Družina: Porpitidae2
Red: Anthoathecata
Celine: Tihi ocean, Atlantski ocean, Indijski ocean, Sredozemsko morje, Južni ocean, Antarktika, Oceani
Mladiči: Each colony's feeding polyps (gonozooids) bud off thousands of tiny jellyfish, each about 1 mm wide, over several weeks. These develop into a free-swimming larva called a conaria, which grows into a new floating colony.1
Nevarnost za ljudi: 1 / 5: Blaga3

Od kod so dejstva

Velella (Wikipedia (CC BY-SA 4.0))
Velella velella (iNaturalist): imena in razvrstitev.
Venom Wiki: stopnja nevarnosti, tipična velikost in ocena hitrosti so naše lastne. Poglej, kako jih določimo: Kako ocenjujemo nevarnost.

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