The tankas, or "sea gypsies," have lived on their boats in coastal parts of Hainan, Guangxi and Guangdong for many years, making a living by fishing and fish farming.

About 'Go! Hainan' series

Featuring unspoiled tropical rain forests, sandy beaches and a rich culture, Hainan Province is the southernmost island province of China. Nicknamed "China's Hawaii," Hainan is on its way to becoming a free-trade port. The "Go! Hainan" series takes you on a new journey to explore the fantastic island and its underwater world.