通常會用氧氣筒輔助之下,持續喺水入面活動,有時係為咗娛樂(好似觀賞海底生態)或者探險(潛入一啲水底洞穴或者沉船),亦都有時係為咗拯救沉船或者打撈;#昧水 (to do scuba diving; to swim underwater)
動詞Examples
原來喺香港都有得學潛水㗎!
jyun4 loi4 hai2 hoeng1 gong2 dou1 jau5 dak1 hok6 cim4 seoi2 gaa3!
Turns out you can learn scuba-diving in Hong Kong!
好耐唔見人,就好似潛咗落水咁冇咗影 (figuratively, to have disappeared for a long period of time)
Examples
你呢排做乜潛水呀?
nei5 ni1 paai4 zou6 mat1 cim4 seoi2 aa3?
Why have you disappeared these days?