Kamar yadda muka gani a cikin labaran da suka gabata, canjin yanayi Yana haifar da ƙaruwar yanayin zafi na teku saboda karuwar haɓakar CO2 a cikin yanayi. CO2 iskar gas mai rage zafi daga rana. Ta hanyar ƙara yanayin zafi a yankunan da ba su da zurfin teku, murjani, waxanda suke da matukar rauni, suna fuskantar canje-canje marasa kyau a jikinsu da abin da ake kira fari.
Wannan bleaching yana haifar da mutuwar murjani kuma tare da shi, duk dabbobin da suke da alaƙa da murjani suna ganin ɓoyewarsu da damar ciyarwar su. Whitening shima yana haifar dashi raguwar haihuwa na murjani wanda ke gudanar da rayuwa.
Babban shingen teku na Ostiraliya yana shan wahala sakamakon canjin yanayi har zuwa yau Kashi 67% na ta sun mutu a cikin watanni tara da suka gabata. Wannan shingen ya taba yin wasu lokutan bleaching a 1998 da 2002, amma yawancinsu sun iya rayuwa. Koyaya, a wannan lokacin, tasirin canjin yanayi yana ƙara bayyana kuma yana da girma kuma wannan shine dalilin da ya sa a wannan karon ya lalace sosai.
Wannan ya bayyana a cikin binciken da Farfesa ya gudanar Terry huhes, Daraktan Majalisar Binciken Australiya. Abinda kawai ake fata game da wannan masifar ta muhalli shine kashi biyu cikin uku na murjani a kudancin Babban shingen ruwa sun sami damar tserewa da mummunar lalacewa.
Amma yaushe zai ɗauki murjani ya murmure bayan wannan yanayin. Masana da ke nazarin kwanciyar hankali na Babban shingen shinge a kowace rana sun kiyasta cewa murjani zai buƙaci tsakanin shekaru 10 zuwa 15 don murmurewa, Sai dai idan canjin yanayi ya canza canjin yanayi da yanayin zafi sun fi daɗi don murmurewa zai iya faruwa da sauri.