Njengoba ubusuku buqala ukusabalala phezu kwechibi, umthombo wezomculo uba yisithombe esikhulu sezinkanyezi. Lapho umculo uqala, amanzi aphuma echibini ngesikhathi somjikelezo—anye alula futhi ahlanzekile, abanye baphakeme futhi bahloniphekile; ukukhanya kuhlanganisa amanzi agijimayo, kushintsha ichibi libe yigalaksi elihambayo.