The World Bog Snorkeling Championships opened in Wales, UK, August 25, 2019. Hundreds of competitors showed up in their snorkeling gear and costumes. / VCG Photo

The first World Bog Snorkeling Championship dates back to 1985. Competitors who swim across the water-filled trench in the shortest time win the competition. / VCG Photo

The competition attracts serious athletes and custom lovers each year. / VCG Photo

This year, competitors caught the attention of spectators with their creative customs. / VCG Photo