Zvemukati
Iyo zvipuka zvemumvura iboka remhando dzinosvika zana nemakumi maviri emarudzi e mhuka, iyo nekufamba kwenguva yakazoenderana nehupenyu hwegungwa, zvinoenderana nenzvimbo iyoyo yekuzvipa kudya nekurarama.
Aya maitiro ekutanga akakosha, nekuti mune zvese zviitiko zvakachinja kubva kumhuka yemammalia kuenda kumhuka yakashandisirwa mvura, uye kwete imwe nzira yakatenderedza. Mhuka dzemumvura dzinoonekwa semhuka dze njere huru, uye pazviitiko zvakawanda vanochiviwa zvakanyanya nekuda kwezvakasiyana: ndosaka vachiwanzo kuve mungozi mhuka.
Hunhu hwepanyama hwe zvipuka zvemumvura vanoratidza kugona kwavo kurarama mumvura, nedhigirii dzakasiyana dze kugadzirisa. Mune zvimwe zviitiko muswe unoita mutsindo wakakombama, mune vamwe mapfupa emabhonzo anoita semupendero wemupendero. Zvakajairika kuti hakuna vhudzi rakawandisa kunze kwemusoro, uye kuti mhino dzinovhurika kumusoro kwemusoro kudzinga mvura.
Vanofema sei?
Mazhinji emhuka idzi ane okisijeni chinodikanwa chakafanana neicho chevanhu, chine chimiro chakafanana chekufema. Iwo haana mapapu akakura zvakaenzana kupfuura aya emunhu, asi ane vhoriyamu yakakura yeropa: mubhedha wevascular wakakura zvakaenzana, uye sezviri pachena unoshanda sedziva reropa rine mweya. Mukati meropa, zvipuka izvi zvine chikamu chakakwirira chemasero matsvuku eropa, zvichipa mhasuru iro rakasviba.
Kuti mhuka dzinoyamwisa dzinokwanisa kurarama mumvura kugona kwakashamisa varume kubvira pavakavapo pasi pano, ndosaka vakagara vachitsvaga kuratidzira iri boka remhuka, uye vakaverengerwa munyaya uye ngano.zvakasiyana siyana, kuchichipa chinoshamisa zvivakwa.
Kubva muzana ramakore regumi neshanu, nyaya dzerudzi urwu dzakapa nzira yekuvhima nyaya, uye mawenga akave kukwezva kukuru kweichi chiitiko.
Iyi inotevera rondedzero inoratidza mimwe mienzaniso yemhuka dzinoyamwisa dzinokwanisa kurarama mu Mvura.
Mienzaniso yezvipuka zvemumvura
- Whale: Mhuka hurusa panyika. Iyo inogara mumvura, asi chikafu chayo chinogadzirwa nenzira imwecheteyo semhuka dzinoyamwisa. Mhuru dzinoyera mamita manomwe uye dzinorema matani maviri pakuzvarwa.
- Dolphin: Ivo vane muviri wefusiform ine musoro wakakura kwazvo. Ruvara rwayo runowanzoita grey, uye rwunokwanisa kushandisa kurira, kusvetuka uye kutamba kutamba neyakaipoteredza. Ichi ndicho chikonzero ichizivikanwa seimwe yemhando dzakangwara kwazvo.
- mhou yegungwa.
- Walrus: Hombe mhuka, iyo, zvinoenderana nesubpecies iri mubvunzo, maitiro mazhinji achachinja. Vanhurume vanodurura bvudzi ravo kamwe chete pagore, nepo vanhukadzi vangatora nguva yakareba.
- Beaver: Kune marudzi matatu pasi rose. Ivo vanozivikanwa chaizvo nehunhu hwavo hwekukwanisa kugadzira madamu nekucheka miti, uye nekuve inotyisa zvisikwa zvisikwa.
- Beluga.
- Muurayi whale: Zvinoenderana neboka iri, rinopa hunhu hwakatsanangurwa. Mhuri idzi dzinotungamirwa nemunhukadzi anoita semusoro naamai, uye mapoka haapfuure vanhu gumi uye anogona kuramba akatsiga nekufamba kwenguva.
- Chisimbiso Ivo vanoshaya zvachose nzeve yekunze, nepo nhengo dzavo dzekumashure dzakanangiswa kumashure, saka ivo havana kugona kwazvo kufamba kwenyika.
- Narwhal.
- Otter: Mvura ndiyo nharaunda yaunonzwa kugadzikana zvakanyanya, kunyangwe ichizvidzivirirawo mushe munzvimbo yepasi.
- Gungwa reshumba: Mhuka chete yeboka remapini ine nzeve. Chitarisiko chavo chinosiyana kupfuura icho cheimwewo imwe mhuri zvinoenderana nezera uye bonde: varume vane mitsipa yakareba uye gobvu zvine hukama neakasara muviri. Vanoshandisa yakawanda yenguva yavo mugungwa, uye vanodyisa hove.
- Urume whale.
- Platypus: Inotaridzika kunge mhuka diki, asi inorema yakawanda. Inowanzo fudza tupukanana twemumvura nemaruva ayo, crustaceans uye mamollusks emumvura.
- Porpoise.
- Mvuu: Mafuta akafutisa pasi peganda anodzivirira kubva kuchando. Muromo waro wakashama unokwanisa kuyera kusvika pamamita, uye unogara mumvura mukati mezuva: kana kwasviba, unobuda ndokufamba uchitsvaga chikafu chayo.
Tevera na:
- Zvipfuwo
- Amphibians
- Zvipuka
