A yau, kusan nau'ikan kifaye 150 sananne ne. Amma kuma akwai irin waɗannan kifayen kifayen da ke ba da mamaki ga tunanin ɗan adam da manyan girmansu, suna kaiwa a wasu yanayi fiye da mita 15. A dabi'ance, "Kattai na teku" na iya zama cikin lumana, sai dai in an tsokane su, ba shakka, haka nan kuma masu zafin rai don haka masu haɗari.
Whale shark (Rhincodon typus)
Wannan kifin kifin shark shine na farko a cikin manyan kifaye. Saboda girman girmansa, an yi masa lakabi da "whale". Tsawonsa, a cewar bayanan kimiyya, ya kai kusan mita 14. Kodayake wasu shaidun gani da ido sun ce sun ga wani kifin Shark na ƙasar Sin wanda ya kai tsawon mita 20. Nauyin ya kai tan 12. Amma, duk da girmansa, ba shi da haɗari ga mutum kuma ana rarrabe shi da yanayin nutsuwa. Abubuwan da ta fi so sune ƙananan ƙwayoyin cuta, plankton. Whale shark mai launin shuɗi ne, mai launin toka ko launin ruwan kasa mai launuka iri-iri da launuka masu launin fari a baya. Saboda kwatankwacin abin da ke bayan fage, mazaunan Kudancin Amurka suna kiran kifin shark "domino", a Afirka - "baba shillin", kuma a Madagascar da Java "tauraro" Whale shark habitat - Indonesia, Australia, Philippines, Honduras. Tana zaune a cikin waɗannan buɗewar ruwa kusan duk rayuwarta, wanda aka kiyasta tsawon sa daga 30 zuwa 150 shekaru.
Giant shark ("Cetorhinus Maximus»)
Giant shark, na biyu mafi girma a cikin tekuna. Tsawonsa ya kai daga mita 10 zuwa 15. Saboda haka, aka sanya mata suna "Dodon teku". Amma kamar kifin kifin whale, ba ya barazana ga rayuwar ɗan adam. Tushen abinci shine plankton. Don ciyar da cikin ta, kifin kifin kifin yana buƙatar tace kusan tan 2,000 na ruwa a kowace awa. Wadannan katuwar "dodanni" suna da launin toka mai duhu zuwa baƙi a launi, amma wani lokacin launin ruwan kasa ne, kodayake ba safai ba. A cewar lura, ana samun wannan nau'in kifin na Shark a cikin Tekun Atlantika da ke kusa da Afirka ta Kudu, Brazil, Ajantina, Iceland da Norway, har ma daga Newfoundland zuwa Florida. A cikin Tekun Pacific - China, Japan, New Zealand, Ecuador, Gulf of Alaska. Giant sharks sun fi son zama a cikin ƙananan makarantu. Gudun ninkaya bai wuce 3-4 km / h ba. Sai kawai wasu lokuta, don tsarkake kansu daga cututtukan ƙwayoyin cuta, sharks suna yin tsalle sama sama da ruwa. A halin yanzu, babban kifin shark yana cikin haɗari.
Polar ko kankara shark (Somniosus microcephalus).
Duk da cewa an lura da kaifin kifin na sama da shekaru 100, har yanzu ba a yi cikakken nazarin wannan nau'in ba. Tsawon manya ya bambanta daga mita 4 zuwa 8, kuma nauyin ya kai tan 1 - 2.5. Idan aka kwatanta da katuwar jumlarta "congeners" - the whale shark da kuma katuwar polar shark, ana iya kiranta mai amana cikin aminci. Ta fi son farauta duka a zurfin kusan mita 100 da kuma kusa da saman ruwa, don kifi da hatimi. Amma ga mutane, babu wani rikodin rikodin wannan harin shark, amma masana kimiyya ba su ba da cikakken bayani game da amincinsa ba. Habitat - ruwan Atlantic mai sanyi da ruwan tekun ruwa. Tsammani yana da shekaru 40-70.
Babban farin shark (Carcharodon carcharias)
Babban kifin shark a cikin Tekun Duniya. Hakanan ana kiranta karcharodon, mutuwar fari, shark mai cin mutum. Tsawon manya daga mita 6 zuwa 11. Nauyin ya kai kusan tan 3. Wannan mummunan mai farauta ya fi son ciyar da abinci ba kawai a kan kifi ba, kunkuru, hatimai da gawawwaki daban-daban. Kowace shekara mutane suna zama abin cutarwa. Hakoranta masu kaifi suna kashe kusan mutum 200 a kowace shekara! Idan farin kifin shark ya ji yunwa, zai iya kai hari ga sharks har ma da kifayen kifi. Da yake yana da fadi, manyan hakora da muƙamuƙai masu ƙarfi, mai sauƙin kai yana cinye ba kawai guringuntsi ba, har ma da ƙasusuwa. Mazaunin karcharodon shine ruwan dumi da yanayi na dukkan tekuna. An gan ta a bakin tekun jihar Washington da California, kusa da tsibirin Newfoundland, a kudancin Tekun Japan, a gabar tekun Pacific na Amurka.
Hammerhead shark (Sphyrnidae)
Wani katon mahaukacin da ke rayuwa a cikin ruwan dumi na Tekun Duniya. Manya sun kai mita 7 a tsayi. Godiya ga iyawar idanunsa, shark na iya kallon kewaye da shi digiri 360. Tana ciyar da duk abin da ke jan hankalin kallonta na yunwa. Zai iya zama kifi iri-iri har ma da abin da aka jefa cikin ruwa daga jiragen ruwa masu wucewa. Ga mutane, yana da haɗari a lokacin kiwo. Kuma duk da karamar bakinta, da wuya ta saki wanda aka azabtar da rai. Tare da ƙananan haƙoransa masu kaifi, shark yana haifar da raunin mutum. Favoriteungiyoyin da suka fi so a cikin ƙuƙumman shark ɗin sune ruwa mai dumi daga Philippines, Hawaii, Florida.
Fox shark (Alopias vulpinus)
Wannan kifin kifin ya sanya jerin manyan kifayen kifi (mita 4 zuwa 6) albarkacin dogon wutsiyarsa, wanda kusan rabin tsayinsa ne. Nauyinsa ya kai 500 kg. Ya fi son ruwan dumi mai zafi na Indiya da Tekun Pacific. Yana son farautar manyan makarantun kifi. Makamin nata babban wutsiyar shark ne, wanda da ita take yiwa wadanda abin ya shafa mummunan rauni. Wani lokaci yakan farauta invertebrates da squid. Ba a rubuta mummunan harin da aka yi wa mutane ba. Amma har yanzu wannan kifin kifin na da hatsari ga mutane.
