Famous for its onsen (hot springs), Oita Prefecture has posted a promotional video featuring former Olympians performing synchronized swimming in geothermal pools in a bid to "heat up" momentum for an upcoming international aquatics sports competition.

The video, posted Monday by the prefecture's official YouTube account, was a part of a campaign to cheer for Japan's synchronizing swimming team competing at the FINA World Aquatics Championships, which kicks off on July 14 in Budapest, Hungary.

The video features five female swimmers, including Mikako Kotani, a bronze medal winner in solo and duet synchronized swimming at the Seoul Olympics in 1988, and Raika Fujii, a member of the silver medal-winning team at the 2000 Sydney Olympics. They show off dynamic performances at nine spas in the prefecture, which boasts the world's highest yield of hot spring water.