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Horn shark

Heterodontus francisci
Davart il num: The scientific name francisci refers to San Francisco, although the shark's range does not reach that far north.1
NunprivlusNunprivlus per umans. Nagut da far quitads.
Peschs tissientads Spinas tissientadasMangia: Charn
Privel per umans: LevSco ina piztgada d'avieul u main. Practicamain nunprivlus per umans.

The horn shark is a small shark with a blunt head and two tall fins, each with a large spine at the front. It lives along the western coast of North America, from California to the Gulf of California. It spends its days hidden in caves and crevices and hunts at night.1

Viva en
Eastern Pacific coast of North America, from Monterey Bay in California south to the Gulf of California1
Ocean Pacific, Golf da California
Pagina iniziala
Adults live in shallower water, usually 2 to 11 m deep, on rocky reefs and in algae beds. Juveniles prefer sandy flats in deeper water, 40 to 150 m deep. In winter, adults move to water deeper than 30 m.1
Lunghezza
1,2 m (3,9 ft)1
Sveltezza maximala
circa 20 km/h (12 mph)
Nudar, stima approximativa
Tge mangia el?
Adults eat mostly hard-shelled molluscs, sea urchins and crustaceans, which they crush with their flat back teeth. They suck prey out of the sand and rocks, and can lever loose prey free with their body.1
Propi!Foto da Horn shark
Horn shark. Foto: Chad King / SIMoN NOAA, no known copyright restrictions (public domain). Public domain, iNaturalist.

Co renconuscher el

  • Short, blunt head with low ridges over the eyes1
  • Two high dorsal fins, each with large, stout spines at the front1
  • Brown or grey body with many small dark spots, though older sharks may have no spots1
  • Yellowish underside1
  • Usually about 1 m long, and most do not exceed this length1

Forza dal tissi

Spinas tissientadas

Spinas pizzadas portan il tissi. Sch'ins passa sin el u al piglia, fa quai mal.

Quant privlus è el per umans?

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

Horn sharks are harmless unless they are harassed. They are not targeted by commercial or recreational fisheries, though small numbers are caught by accident.1

Tge fa el, cura ch'el ha tema?

During the day they stay still in hiding places, but they swim away quickly if disturbed.1

Sche sias spinas ta furan

  • Metta la plaja en aua chauda, uschè chauda sco che la persuna po supportar senza sa brischar (emprova cun tes agen maun), durant 30 fin 90 minutas. Tschertga agid medicinal, surtut tar peschs crap e rajas.

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.
  • Sche sias spinas ta furan: 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 OceaniaOcean PacificGolf da California

Quant grond è el?

Quant lung è el?

Horn shark circa 1,2 m lung (3,9 ft)In chaun circa 1 m (3,3 ft)In creschì circa 1,7 m (5,6 ft)
uschè lung sco 2,5 giats da chasa dal nas fin a la cuauschè lung sco 7 bananas ina suenter l'autrapudess nudar la lunghezza d'in grond bassin (50 m) en 9 secundas

Quant grond è Horn shark cumpareglià cun TAI?

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

Quant svelt è el?

bun da savair

Fatgs

1

For its size, the horn shark has the strongest bite of any shark that has been measured.1

2

To pull prey loose, the shark pushes its head up with a downward stroke of its tail. No other shark has been seen doing this.1

3

Large horn sharks that eat many sea urchins can have purple-stained teeth and fin spines.1

4

A Pacific angelshark was filmed trying to swallow a juvenile horn shark, but spat it out because of the spines.1

5

Horn sharks have only 148 electroreceptors (ampullae of Lorenzini), far fewer than most sharks, which may have over 2,000. They rely mainly on smell to find food.1

6

A dropped tooth takes about 4 weeks to be replaced.1

Per experts da tissi

Num scientific
Heterodontus francisci
Gruppa
Peschs tissientads
Famiglia
Heterodontidae2
Urden
Heterodontiformes
Continents
Ocean Pacific, Golf da California, Ils oceans
Poppins
They lay eggs. From February to April, females lay up to 24 eggs, two at a time, every 11 to 14 days, and wedge the egg cases into crevices to protect them.1
Co ch'i va ad el en la natira
Insufficient data (IUCN); population listed as stable on 10 October 20251
Privel per umans
1 / 5: Lev3

Da nua che vegnan ils fatgs

  1. Horn shark (Wikipedia (CC BY-SA 4.0))
  2. Heterodontus francisci (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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