UMary Allen
Oshaka bayizinhlanzi ezitholakala ekhaya kuzo zonke izilwandle. Izinhlobo ezimbalwa nazo zihlala emifuleni. Zingamalungu eqembu lezinhlanzi ezidla ezinye: iningi lazo lidla izinhlanzi nezinye izilwane zasolwandle.
Lapho oshaka bebhukuda beya phezu kwamanzi, babonakala ngokuphuma komgogodla wabo ongunxantathu emanzini. Oshaka babhukuda olwandle eminyakeni eyizigidi ezingama-400 edlule, okubenza babe olunye lwezilwane ezindala kakhulu emhlabeni.
I-pygmy shark incane kakhulu ngamasentimitha angama-25 ubude, kanti ushaka womkhomo mude kunawo wonke ngamamitha ayi-14. I-whale shark iphinde ibe ushaka osinda kakhulu: Ifinyelela kumathani ayishumi nambili, isisindo sayo singafinyelela ezimotweni eziyishumi. Sekukonke kunezinhlobo ezingaba ngu-500 zoshaka.
Oshaka banesethi ekhethekile yamazinyo: eminye imigqa ikhula ngemuva komugqa wokuqala wamazinyo. Uma amazinyo ewa lapho kuliwa nezinye izilwane, amazinyo alandelayo aya phezulu. Ngale ndlela, ushaka “udla” amazinyo angaba ngu-30,000 XNUMX ekuphileni kwawo.
Isikhumba sikashaka asenziwanga ngezikali ezivamile, kodwa ngento efanayo namazinyo abo. Lezi zikali zibizwa ngokuthi "amazinyo esikhumba". Lesi sikhumba sibushelelezi kuye lapho sithinta khona ukusuka ekhanda kuya ephikweni le-caudal, futhi simahhadlahhadla ngenye indlela.
Baphila kanjani oshaka?
Oshaka abakacwaningwa kahle, ngakho kuncane okwaziwayo ngabo. Nokho, isici esisodwa esikhethekile esaziwayo: oshaka kufanele baqhubeke behamba ukuze bangacwi olwandle. Lokhu kungenxa yokuthi, ngokungafani nezinye izinhlanzi, azinaso isinye sokubhukuda esigcwele umoya.
Izinhlobo eziningi zoshaka zidla izinhlanzi nezinye izilwane zasolwandle ezinkulu. Kodwa ezinye zezinhlobo zoshaka ezinkulu kakhulu zidla ama-plankton, okuyizilwane ezincane noma izitshalo ezintanta emanzini. Emhlabeni jikelele, cishe abantu abahlanu babulawa oshaka minyaka yonke.
Oshaka banezitha: oshaka abancane badliwa imisebe noshaka abakhulu. Oshaka nabo basohlwini lwezinyoni zasolwandle nezinja zasolwandle eduze nogu. Ama-Killer whale azingela oshaka abakhulu. Nokho, isitha esikhulu soshaka abantu abanamanetha abo okudoba. Inyama yoshaka ibhekwa njengento ewuju, ikakhulukazi e-Asia.
Oshaka banamaphuphu abo kanjani?
Ukuzala koshaka kuthatha isikhathi eside: abanye oshaka kufanele babe neminyaka engama-30 ngaphambi kokuba bahlangane okokuqala. Ezinye izinhlobo zizalela amaqanda olwandle. Umama akabanakekeli noma amawundlu. Abaningi badliwa njengamaqanda noma njengezingane.
Abanye oshaka bathwala abambalwa abahlala bebancane eziswini zabo njalo eminyakeni emibili. Lapho bakhula kusukela engxenyeni yonyaka kuya cishe eminyakeni emibili. Phakathi nalesi sikhathi, ngezinye izikhathi zidlana zodwa. Abanamandla kuphela abazalwa. Bese iba nguhhafu wemitha ubude.
Izinhlobo eziningi zoshaka zisengozini yokushabalala. Lokhu akubangelwa ngabantu kanye nezitha zemvelo kuphela. Yingoba futhi oshaka kufanele baguge kakhulu ngaphambi kokuba bakwazi nokuzala.