Duba wurin da ke ƙasa sannan ka amsa tambayar daga baya a cikin harshe ɗaya kamar yadda wurin yake:  Hanyar wucewa: Ruwa mai zurfi yana da tsarin halittu na musamman: ruwan gishiri daga koguna ya hadu da ruwan teku daga Tekun Arabiya. An gina shinge a kusa da Thanneermukkom, don haka an hana ruwan gishiri daga teku daga shiga cikin zurfin ciki, yana kiyaye ruwa mai kyau. Ana amfani da irin wannan ruwa mai kyau sosai don dalilai na ban ruwa. Yawancin nau'ikan halittu na ruwa na musamman da suka hada da crabs, frogs da mudskippers, tsuntsayen ruwa kamar su terns, kingfishers, darters da cormorants, da dabbobi kamar otters da turtles suna rayuwa a ciki da kuma kusa da backwaters. Ganyayyun itatuwan dabino, itatuwan pandanus, tsirrai masu ganye dabam dabam, da kuma bishiyoyi suna girma a gefen kogin, suna ba da kore ga yanayin da ke kewaye da su.  Tambaya: Ta yaya ake hana ruwan gishiri daga gurɓata ruwan sha kusa da Thanneermukkom?
Ƙarƙashin ruwa