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Horn shark

Heterodontus francisci

O imenu: The scientific name francisci refers to San Francisco, although the shark's range does not reach that far north.1

NeškodljivaZa ljudi neškodljiva. Ni razloga za skrb.

Strupene ribe

Strupene bodiceJe: Meso

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

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

Živi v

Eastern Pacific coast of North America, from Monterey Bay in California south to the Gulf of California1

Tihi ocean, Kalifornijski zaliv

Domov

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

Dolžina

1,2 m (3,9 ft)1

Največja hitrost

približno 20 km/h (12 mph)

Plavanje, groba ocena

Kaj je?

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

Fotografija: Horn shark — Horn shark. Fotografija: Chad King / SIMoN NOAA, no known copyright restrictions (public domain). Public domain, iNaturalist.

Kako jo prepoznaš

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

Moč strupa

Strupene bodice

Ostre bodice nosijo strup. Če stopiš nanjo ali jo primeš, boli.

Kako nevarna je za ljudi?

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

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

Kaj naredi, ko se prestraši?

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

Če te zbode z bodicami

Rano daj v vročo vodo, tako vročo, kot jo poškodovanec prenese, ne da bi se opekel (preizkusi jo s svojo roko), za 30 do 90 minut. Poišči zdravniško pomoč, še posebej pri kamnitih ribah in morskih bičih.

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 zbode z bodicami: 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 Tihi ocean Kalifornijski zaliv

Kako velika je?

Kako dolga je?

dolga kot 2,5 domačih mačk od nosu do repadolga kot 7 banan, položenih ena za drugozmore preplavati dolžino velikega bazena (50 m) v 9 sekundah

Kakšne velikosti je Horn shark v primerjavi s TABO?

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

Kako hitra je?

Olimpijski plavalec približno 8 km/h (5 mph)

Horn shark približno 20 km/h (12 mph)

Delfin s polno hitrostjo približno 35 km/h (22 mph)

vredno vedeti

Dejstva

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

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

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

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

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

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

Za strokovnjake za strupe

Znanstveno ime: Heterodontus francisci
Skupina: Strupene ribe
Družina: Heterodontidae2
Red: Heterodontiformes
Celine: Tihi ocean, Kalifornijski zaliv, Oceani
Mladiči: 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
Kako ji gre v naravi: Insufficient data (IUCN); population listed as stable on 10 October 20251
Nevarnost za ljudi: 1 / 5: Blaga3

Od kod so dejstva

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