Yakanga isiri nguva yokutanga kuti titaure pamusoro pezviuru kana kuti kunyange mamiriyoni de peces Vakafira mune rimwe dhamu kana rwizi panyika. Mumhando idzi dzenyaya, boka rekuferefeta rinowanzotumirwa kuti rijekese zvakaitika. Nehurombo, mhedzisiro yerufu idzi dzinenge nguva dzose nekuda kwevhu rakasviba. mvura umo mavaive kana kune zvine chepfu zvakasara zvaivepo. Zviito zvinoitwa nemurume iyeye.
Vanhu vazhinji vanonetsekawo kuti sei mvura yakasviba ichiuraya hove. Iri dambudziko rine mhinduro yakapusa. Uye ndezvekuti, sezvo pasina kukwana kwakaringana, mvura haigone kuchengeta iyo okisijeni yekupona kwemhuka, ichivaita kuti vafe vasina mweya. Chinhu chinoitikawo kwatiri kana tikasawana mweya wakakwana.
Hove dzine ma gill, nhengo dzinoburitsa oxygen kubva mumvura (tinoiburitsa kubva mumhepo). Kana mvura iine zvinhu zvine chepfu kana tsvina, zviri pachena kuti hakuzovi neiyo huwandu hunodiwa hweoksijeni. Munzvimbo mavo muchawana ese marudzi emakomputa ane zvishoma zvine chekuita nemumwe. Pakupedzisira, hove dzinofa nekuti hadziwane chavanoda kurarama. Kazhinji, iyo mhinduro yakawanikwa ndeyekuchenesa mvura.
Unofanirwa kunyatsoteerera padambudziko iri, nekuti panogona kunge paine kushayikwa kwe oxygen mu aquariums. Neichi chikonzero, tinokurudzira kuchenesa mvura vhiki nevhiki. Nenzira iyi ichave yakachena uye ine oxygen yakakwana kuti mhuka dzirarame. Usambofa wakazvikanganwa, hutano hwemhuka dzako huri panjodzi.