Zikafika pakupulumuka panyanja, nthawi zina chitetezo chabwino kwambiri ndichobisala bwino. Zokhala ndi mawonekedwe owoneka bwino komanso kusintha kwamitundu, zamoyo zambiri zam'nyanja zasinthika kukhala akatswiri obisala, kusakanikirana bwino ndi malo osiyanasiyana ozungulira.

Kwa nyama zing'onozing'ono, kusinthasintha koteroko kumakhala kofunikira pankhani yosokoneza ndi kuthawa adani omwe angakhale olusa. Mwachitsanzo, zipsepse zowoneka bwino za chinjoka cha m'nyanja, zimaoneka mofanana ndi momwe nsomba zimakhalira, zomwe zimachititsa kuti zibisale mosavuta.

© Monterey Bay Aquarium

Nyama zina za m'madzi zimabisala kuti zigonjetse nyama zosayembekezera, zomwe zimachititsa alenje kudabwa ndi mphamvu zochepa. Mwachitsanzo, taganizirani za nsomba ya ng’ona. Nsomba za ng'ona zitabisala pansi pa nyanja yamchenga zomwe zimagwirizanitsidwa ndi matanthwe osaya, zimadikirira kwa maola angapo kuti zibisalire nkhanu kapena minnow.

© Team FreeDiver

Kuchokera ku masinthidwe apamwamba kwambiri mpaka kusintha kwachibadwa kwa mtundu, zolengedwa za m'nyanja zapanga njira zanzeru zoyendera ndi kupulumuka "kupha kapena kuphedwa" nyama. Komabe, mtundu umodzi wa zamoyo wapezeka kuti ukuposa mitundu ina yonse pa luso lake lobisala m’madzi.

Octopus ya mimic, thaumoctopus mimicus, yasokoneza malingaliro onse asayansi omwe analipo kale okhudza malire a kutsanzira. Mitundu yambiri imakhala ndi mwayi kuti idasintha chinthu chimodzi chokha kuti ipewe zolusa kapena kubisala. Osati ngati octopus. Thaumoctopus chitsanzo ndi nyama yoyamba kupezedwa kutengera maonekedwe ndi khalidwe la zamoyo zoposa chimodzi. Pokhala m'madzi ofunda, akuda kuchokera ku Indonesia ndi Malaysia, octopus yofanana, yomwe ili yabwinobwino, imatha kutalika pafupifupi mita imodzi, imadzitamandira mikwingwirima yofiirira ndi yoyera komanso mawanga. Komabe, thaumoctopus mimicus nthawi zambiri samawoneka ngati octopus kwa nthawi yayitali. Ndipotu, kanyamaka kamakhala waluso kwambiri moti si nyamayi, moti mpaka 1998 sanatulukire anthu mpaka mu XNUMX. Masiku ano, ngakhale atafufuza mozama, kuya kwa kagulu kotsanzirako sikudziwikabe.

Ngakhale poyambira, ma octopus onse (kapena octopi, onse ndi olondola mwaukadaulo) ndi akatswiri achinsinsi. Chifukwa alibe zigoba, nyamakazi ndi akatswiri opotoza manja, omwe amawongolera manja awo mosavuta kuti afinyine m'malo olimba kapena kusintha mawonekedwe awo. Mwamsanga, khungu lawo limatha kusintha kuchoka pa poterera ndi losalala mpaka la mabwinja komanso lopindika pakangopita masekondi angapo. Kuphatikiza apo, chifukwa chakukula kapena kuchepa kwa ma chromatophores m'maselo awo, mtundu wa octopus ukhoza kusuntha mwachangu mawonekedwe ndi mthunzi kuti ufanane ndi malo ozungulira. Chomwe chimasiyanitsa octopus wofanana ndi anzawo amtundu wa cephalopod sikuti amangovala zokongola zokha, komanso makonda ake osayerekezeka.

Monga ochita zisudzo onse akulu, octopus otsanzira amasangalatsa omvera ake. Akakumana ndi chilombo chanjala, nyamayi amatha kuyerekezera ngati nsomba ya mkango yaululu pokonza mapiko ake asanu ndi atatu kuti azioneka ngati mizeremizeremizere ya nsombayo.

Kapena mwina ingaphwasula thupi lake lonse kuti liwoneke ngati nsonga kapena nsonga yapoizoni.

Nyamayi ikagwidwa, imatha kutsanzira njoka yapanyanja yam'madzi, yobisa mutu wake ndi mazenera ake asanu ndi limodzi mobisa ndi kupotokola manja ake otsala ngati njoka.

Octopus otsanzira awonedwanso akukhala ngati nyanja, starfish, nkhanu, anemones, shrimp, ndi jellyfish. Zina mwazovala zake sizinapanikidwebe, monga munthu wothamanga wosangalatsa yemwe ali pansipa.

Chimodzi mwazinthu zotsalira za masks ambiri a octopus ndi chakuti chilichonse ndi chakupha kapena chosadyedwa. Nyamayi wotsanzira waganiza bwino kuti podzinamiza ngati nyama zoopsa kwambiri, amatha kuyenda momasuka komanso mosatekeseka m'nyumba yake yonse ya pansi pamadzi. Pokhala ndi zobisika zowoneka bwino komanso palibe mitundu ina yamtundu wa cephalopod yomwe imachita zotsanzira, octopus wotsanzira amayika chitetezo cha inki-squirt ndi kuthawa amanyazi.