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By-the-wind sailor

Velella velella
Davart il num: Its common name refers to its small sail, which catches the wind and carries the animal across the sea.1
NunprivlusNunprivlus per umans. Nagut da far quitads.
Medusas ed autras creaturas da mar che piztgan Tentaclas che piztganMangia: Charn
Privel per umans: LevSco ina piztgada d'avieul u main. Practicamain nunprivlus per umans.

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

Viva en
Warm and temperate waters of all the world's oceans1
Ocean Pacific, Ocean Atlantic, Ocean Indic, Mar Mediterran, Ocean dal Sid, Antarctica
Pagina iniziala
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
Lunghezza
7 cm (2,8 in)1
Sveltezza maximala
circa 1 km/h (0,62 mph)
Nudar, stima approximativa
Tge mangia el?
It eats mostly plankton. It catches prey with tentacles that hang down in the water and bear stinging cells called nematocysts.1
Propi!Foto da By-the-wind sailor
By-the-wind sailor. Foto: Niki Hubbard. CC BY 4.0, iNaturalist.

Co renconuscher el

  • 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

Forza dal tissi

Tentaclas che piztgan

Millis da pitschnas cellas urticantas sajettan, cura ch'insatge las tutga.

Tge fa ses tissi?

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

Quant privlus è el per umans?

Privel per umans: LevSco ina piztgada d'avieul u main. Practicamain nunprivlus per umans.

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

Sch'el piztga

  • Va or da l'aua e prenda davent las tentaclas (cun manetschas u cun in tschop).
  • Tar medusas cubicas tropicalas: versa aschieu sin las piztgadas durant almain 30 secundas, clama agid e sajas pront da far ina reanimaziun. Tar galeras portugaisas e las bleras autras: lava cun aua da mar, lura cun aua chauda cunter las dolurs.

Clama adina l'emprim tes numer d'urgenza (112, 000, 911). Quai è in cussegl general d'emprim agid, betg in cussegl medicinal. Basa da l'emprim agid

Resta en segirezza

  • Na tutga, na piglia e na tizza mai in animal selvadi, gnanc in pitschen, ed era sch'el para da durmir u d'esser mort.
  • Dà spazi a l'animal. Sche ti scuntras in, resta calm, va plaun enavos e lascha ir el per sia via.
  • Sch'in tal animal ta piztga: resta calm, na ta mova betg, clama tes numer d'urgenza (112, 000, 911) u va spert en in ospital. Ta regorda co ch'el veseva or, ina foto gida.

El n'ha betg quai sin tai. El dovra ses tissi per pigliar nutriment u per sa defender, e sa zuppa bler pli gugent. Dapli davart la segirezza

Nua sin il mund?

AfricaAsiaEuropaAmerica dal NordAmerica dal SidAustralia ed OceaniaAntarcticaOcean PacificOcean AtlanticOcean IndicOcean dal SidMar Mediterran

Quant grond è el?

Quant lung è el?

By-the-wind sailor circa 7 cm lung (2,8 in)In clip da palpiri circa 3 cm (1,2 in)In smartphone circa 15 cm (5,9 in)
uschè lung sco 2 bluccs da construcziun in suenter l'auterpudess nudar la lunghezza d'in grond bassin (50 m) en 180 secundas

Quant grond è By-the-wind sailor cumpareglià cun TAI?

Mo matematica en tes navigatur. Nagut na vegn memorisà u tramess.

Quant svelt è el?

bun da savair

Fatgs

1

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

2

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

3

Each colony is either all male or all female.1

4

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

5

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

6

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

Destructur da mits

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

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

Per experts da tissi

Num scientific
Velella velella
Gruppa
Medusas ed autras creaturas da mar che piztgan
Famiglia
Porpitidae2
Urden
Anthoathecata
Continents
Ocean Pacific, Ocean Atlantic, Ocean Indic, Mar Mediterran, Ocean dal Sid, Antarctica, Ils oceans
Poppins
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
Privel per umans
1 / 5: Lev3

Da nua che vegnan ils fatgs

  1. Velella (Wikipedia (CC BY-SA 4.0))
  2. Velella velella (iNaturalist): nums e classificaziun.
  3. Venom Wiki: il stgalim da privel, la grondezza tipica e la stima da la sveltezza èn noss agens. Guarda co che nus als calculain: Co che nus valitain il privel.

Mintga fatg sin questa pagina ha in numer che renvia a sia funtauna. Sche nus avain fatg in sbagl, perstgisa, nus essan fans d'animals, betg ina revista scientifica. Scriva a nus a [email protected] e nus curregin.

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