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Horn shark

Heterodontus francisci

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

ZararsizOdamlar uchun zararsiz. Xavotirga oʻrin yoʻq.

Zaharli baliqlar

Zaharli tikanlarOvqati: Goʻsht

Odamlar uchun xavf: YengilAri nishidek yoki undan ham kam. Odamlar uchun deyarli zararsiz.

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

Yashash joyi

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

Tinch okeani, Kaliforniya koʻrfazi

Bosh sahifa

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

Uzunlik

1,2 m (3,9 ft)1

Eng yuqori tezlik

taxminan 20 km/soat (12 mil/soat)

Suzish, taxminiy

Nima yeydi?

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

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

Uni qanday tanish mumkin

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

Zahar quvvati

Zaharli tikanlar

Oʻtkir tikanlar zahar tashiydi. Ustiga bosish yoki ushlash ogʻritadi.

Odamlar uchun qanchalik xavfli?

Odamlar uchun xavf: YengilAri nishidek yoki undan ham kam. Odamlar uchun deyarli zararsiz.

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

Qoʻrqqanda nima qiladi?

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

Agar tikanlari senga sanchilsa

Yarani issiq suvga sol, odam kuymasdan chiday oladigan darajada issiq boʻlsin (oʻz qoʻling bilan tekshir), 30 daqiqadan 90 daqiqagacha. Tibbiy yordam ol, ayniqsa tosh baliq va nishli skatda.

Har doim avval favqulodda yordam raqamiga qoʻngʻiroq qil (112, 000, 911). Bu birinchi yordam boʻyicha umumiy maslahat, tibbiy maslahat emas. Birinchi yordam asoslari

Xavfsiz boʻl

Hech qachon yovvoyi hayvonga tegma, uni tutma yoki jigʻiga tegma, hatto kichkina boʻlsa ham va hatto uxlayotgan yoki oʻlik koʻrinsa ham.
Unga joy ber. Agar duch kelsang, xotirjam boʻl, sekin orqaga chekin va uni oʻz yoʻliga ketishiga qoʻy.
Agar tikanlari senga sanchilsa: xotirjam boʻl, qimirlamay tur, favqulodda yordam raqamiga qoʻngʻiroq qil (112, 000, 911) yoki tezda kasalxonaga yet. U qanday koʻrinishda ekanini eslab qol, surat yordam beradi.

U seni ovlamoqchi emas. Zaharini ovqat tutish yoki oʻzini himoya qilish uchun ishlatadi va yashirinishni ancha afzal koʻradi. Xavfsiz qolish haqida batafsil

Dunyoning qayerida?

Afrika Osiyo Yevropa Shimoliy Amerika Janubiy Amerika Avstraliya va Okeaniya Tinch okeani Kaliforniya koʻrfazi

U qanchalik katta?

U qanchalik uzun?

burnidan dumigacha tizilgan 2,5 ta uy mushugidek uzunketma-ket qoʻyilgan 7 ta banandek uzunkatta basseyn uzunligini (50 m) 9 soniyada suzib oʻtishi mumkin

Horn shark SEN bilan solishtirganda qanchalik katta?

Faqat brauzeringdagi hisob-kitob. Hech narsa saqlanmaydi va hech qayerga yuborilmaydi.

U qanchalik tez?

Olimpiya suzuvchisi taxminan 8 km/soat (5 mph)

Horn shark taxminan 20 km/soat (12 mph)

Toʻliq tezlikdagi delfin taxminan 35 km/soat (22 mph)

bilish foydali

Faktlar

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

Zahar mutaxassislari uchun

Ilmiy nomi: Heterodontus francisci
Guruh: Zaharli baliqlar
Oila: Heterodontidae2
Tartib: Heterodontiformes
Qitʼalar: Tinch okeani, Kaliforniya koʻrfazi, Okeanlar
Chaqaloqlar: 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
Tabiatda ahvoli qanday: Insufficient data (IUCN); population listed as stable on 10 October 20251
Odamlar uchun xavf: 1 / 5: Yengil3

Faktlar qayerdan olingan

Horn shark (Wikipedia (CC BY-SA 4.0))
Heterodontus francisci (iNaturalist): nomlar va tasnif.
Venom Wiki: xavf darajasi, odatiy oʻlcham va taxminiy tezlik bizning oʻz baholarimiz. Ularni qanday hisoblashimizni koʻr: Xavfni qanday baholaymiz.

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