Practiced for thousands of years by pearl divers and spearfishermen, freediving has grown to become a popular recreational and competitive sport around the world. Freediving requires swimmers to hold their breath until they resurface. In Hong Kong, there has been a growing community of freedivers in a city not widely associated with nature. But since the Covid-19 pandemic, a group of freediving enthusiasts has expanded to some 300 members as city residents explore new local outdoor adventures. Among them is Kenze Leung, 35, who has incorporated his love for underwater photography into his new pastime. Additional camera by Kaming Hu.