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Horn shark

Heterodontus francisci

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

AláìléwuKò léwu fún ènìyàn. Kò sí ohun tó yẹ kí ó dààmú ọ.

Ẹja olóró

Ẹ̀gún olóróOúnjẹ rẹ̀: Ẹran

Ewu fún ènìyàn: Fúyẹ́Bí ìtani oyin tàbí kò tó bẹ́ẹ̀. Kò fẹ́rẹ̀ẹ́ léwu fún ènìyàn.

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

Ó ń gbé ní

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

Òkun Pàsífíìkì, Ìyawọlẹ̀ Òkun Kalifọ́níà

Ilé

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

Gígùn

1.2 m (3.9 ft)1

Ìyára gíga jùlọ

nǹkan bí 20 km/h (12 mph)

Lílúwẹ̀ẹ́, àfojúbù

Kí ni ó máa ń jẹ?

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

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

Bí o ṣe lè dá a mọ̀

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

Agbára oró

Ẹ̀gún olóró

Ẹ̀gún mímú ló ń gbé oró náà. Títẹ̀ ẹ́ mọ́lẹ̀ tàbí dídì í mú máa ń dunni.

Báwo ló ṣe léwu tó fún ènìyàn?

Ewu fún ènìyàn: Fúyẹ́Bí ìtani oyin tàbí kò tó bẹ́ẹ̀. Kò fẹ́rẹ̀ẹ́ léwu fún ènìyàn.

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

Kí ni ó máa ń ṣe nígbà tí ẹ̀rù bá bà á?

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

Bí ẹ̀gún rẹ̀ bá gún ọ

Fi ọgbẹ́ náà sínú omi gbígbóná, tó gbóná tó bí ẹni náà ṣe lè fara dà á láìjóná (fi ọwọ́ ara rẹ dán an wò), fún ìṣẹ́jú 30 sí 90. Wá ìrànlọ́wọ́ ìṣègùn, pàápàá fún ẹja òkúta àti stingray.

Máa kọ́kọ́ pe nọ́ńbà pàjáwìrì rẹ nígbà gbogbo (112, 000, 911). Èyí jẹ́ ìtọ́sọ́nà ìtọ́jú àkọ́kọ́ gbogbogbò, kì í ṣe ìmọ̀ràn ìṣègùn. Ìpìlẹ̀ ìtọ́jú àkọ́kọ́

Wà láìléwu

Má ṣe fọwọ́ kan, mú tàbí yọ ẹranko igbó lẹ́nu láéláé, kódà bí ó bá kéré, kódà bí ó bá dà bí ẹni pé ó ń sùn tàbí ó ti kú.
Fún un ní àyè. Bí o bá pàdé ọ̀kan, farabalẹ̀, sẹ́yìn díẹ̀díẹ̀ kí o sì jẹ́ kí ó máa bá ọ̀nà rẹ̀ lọ.
Bí ẹ̀gún rẹ̀ bá gún ọ: farabalẹ̀, má ṣe mira, pe nọ́ńbà pàjáwìrì rẹ (112, 000, 911) tàbí lọ sí ilé ìwòsàn kíákíá. Rántí bí ó ṣe rí, fọ́tò máa ń ṣèrànwọ́.

Kò wá ọ kiri láti ṣe ọ́ léṣe. Ó ń lo oró rẹ̀ láti mú oúnjẹ tàbí láti dáàbò bo ara rẹ̀, ó sì fẹ́ràn láti farapamọ́ jù. Sí i nípa wíwà láìléwu

Níbo ní ayé?

Áfíríkà Éṣíà Yúróòpù Àríwá Amẹ́ríkà Gúúsù Amẹ́ríkà Ọsirélíà àti Òṣéáníà Òkun Pàsífíìkì Ìyawọlẹ̀ Òkun Kalifọ́níà

Báwo ló ṣe tóbi tó?

Báwo ló ṣe gùn tó?

ó gùn tó ológbò ilé 2.5 láti imú dé ìrùó gùn tó ọ̀gẹ̀dẹ̀ 7 tí a tò tẹ̀léralè lúwẹ̀ẹ́ gígùn adágún ìwẹ̀ ńlá (50 m) ní ìṣẹ́jú-àáyá 9

Báwo ni Horn shark ṣe tóbi tó tí a bá fi wé ÌWỌ?

Ìṣirò nìkan nínú bráwúsà rẹ. A kò fi ohunkóhun pamọ́, a kò sì fi ránṣẹ́ sí ibikíbi.

Báwo ló ṣe yára tó?

Olùwẹ̀ Olympic nǹkan bí 8 km/h (5 mph)

Horn shark nǹkan bí 20 km/h (12 mph)

Ẹja dolphin tó ń sá pẹ̀lú gbogbo agbára nǹkan bí 35 km/h (22 mph)

ó yẹ ní mímọ̀

Òtítọ́

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

Fún àwọn amòye oró

Orúkọ sáyẹ́ǹsì: Heterodontus francisci
Ẹgbẹ́: Ẹja olóró
Ìdílé: Heterodontidae2
Ètò: Heterodontiformes
Àwọn kọ́ńtínẹ́ńtì: Òkun Pàsífíìkì, Ìyawọlẹ̀ Òkun Kalifọ́níà, Àwọn òkun ńlá
Àwọn ọmọ: 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
Bí ó ṣe ń ṣe nínú igbó: Insufficient data (IUCN); population listed as stable on 10 October 20251
Ewu fún ènìyàn: 1 / 5: Fúyẹ́3

Ibi tí àwọn òtítọ́ ti wá

Horn shark (Wikipedia (CC BY-SA 4.0))
Heterodontus francisci (iNaturalist): orúkọ àti ìpínsísọ̀rí.
Venom Wiki: ìpele ewu, ìtóbi déédé àti àfojúbù ìyára jẹ́ tiwa. Wo bí a ṣe ń ṣírò wọn: Bí a ṣe ń díwọ̀n ewu.

Gbogbo òtítọ́ ojú-ìwé yìí ní nọ́ńbà tó tọ́ka sí orísun rẹ̀. Bí a bá ṣe àṣìṣe, má bínú, olólùfẹ́ ẹranko ni wá, kì í ṣe ìwé ìròyìn sáyẹ́ǹsì. Sọ fún wa ní [email protected] a ó sì tún un ṣe.

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