As the controversial Chao Phraya River Promenade comes ever closer to fruition, old communities along the river are living in fear of eviction. Among those potentially affected are Udom Khamking, 67, and Chalong Songbundit, 34, of Mittakham community, who work as divers hunting for sunken treasures in the Chao Phraya River. We speak to them about their unusual profession, which is still going strong after more than half a century.