Ubani osheshayo: umnenke noma ufudu?

Ngokwesiko, izimfudu zithathwa njengezidalwa ezikhululekile emhlabeni, ngisho negama lazo seliphenduke igama lasekhaya futhi lisetshenziselwa ukuchaza ukunensa. Banembangi eyodwa kuphela edume ngokulinganayo ekhetha ukuhamba ngokukhululeka - umnenke. Kodwa uma uzibuza ukuthi yimuphi kubo osheshayo, ungathola amaqiniso angavamile.

Zihamba ngokushesha kangakanani izimfudu?

Ukuze uthole ukuthi iyiphi yezilwane ezihamba kancane kancane, kubalulekile ukubala futhi uqhathanise isivinini esimaphakathi ngasinye sazo. Futhi kulolu cwaningo, izimfudu zingamangala kakhulu - azihambi kancane njengoba zibonakala, futhi ngaphansi kwezimo ezithile zikwazi ngisho nokudlula umuntu. Ijubane lokuhamba kwalezi zilwane ezihuquzelayo lingahluka kakhulu kuye ngezinhlobo zazo, isisindo noma ubudala, kepha isilinganiso singama-15 km / h kubantu abasemhlabeni.

Isizathu sokunensa okubonakalayo kwalezi zilwane ezihuquzelayo yigobolondo elisindayo - ukuzihudula ngokwakho kudinga amandla amaningi, ngakho-ke isikhathi esiningi bakhetha ukuhamba ngendlela ekhululekile kakhudlwana. Kulula kakhulu ukuhamba emanzini, ngakho-ke izilwane ezihuquzelayo zasemanzini zibhukuda ngokushesha - isilinganiso sazo esingama-25 km / h. Ummeleli osheshayo ufudu lwasolwandle lwe-leatherback, olukwazi ukubhukuda amakhilomitha angama-35 ngehora.

Kuyathakazelisa: Isihloko sesinye sezilwane ezihamba kancane emhlabeni sitholwa ngokufanelekile ufudu lwendlovu, olufinyelela osayizi abakhulu kakhulu. Umzimba omkhulu osindayo unzima ukuwunyakazisa futhi uwujike, ngakho ngehora elilodwa lesi silwane asinqobi ngaphezu kwamakhilomitha amane.

Iminenke ikhasa ngokushesha kangakanani

Umnenke ojwayelekile wasengadini ukhasa ngo-1-1,3 cm ngomzuzwana, ngakho-ke awukwazi ukuvala ngaphezu kwama-80 cm ngomzuzu kanye nama-47 m ngehora. Kodwa lolu hlobo lungolunye olushesha kakhulu phakathi kwezihlobo zalo - isivinini esijwayelekile salezi mollusk singu-1,5 mm / s kuphela, okulingana no-6 cm / min noma 3,6 m / h. Kungani iminenke ihamba kancane kangaka? Ukuqhubekela phambili kwenziwa ngenxa yokufinyela kwemisipha yomzimba wakhe - bayagoba futhi baqondise ubuso "bomlenze" wakhe njengokunyakaza kwezibungu.

I-mucus efihliwe, egcoba indawo lapho i-mollusk ihudulela umzimba phambili, isiza ukusheshisa kusengaphambili kancane, futhi inciphise ukungqubuzana. Kodwa naphezu kwawo wonke amaqhinga, ijubane lalezi zilwane lihlala liphansi kakhulu emhlabeni. Ngakho-ke, umbuzo wokuthi ubani ohamba kancane: i-turtle noma umnenke ungaphendulwa ngokungananazi - i-mollusk iphansi kakhulu kunombangi wayo.

Ividiyo yomncintiswano wejubane phakathi komnenke nofudu