Choeurn Hong, 46, was a longtime fisherman on Koh Sdach, King Island, just two miles long off the coast of Cambodia. But now, his bright orange wooden boat is packed with neon life jackets and snorkeling gear for visitors. Hong switched to working in tourism a few years ago, when he could no longer support his family through fishing. “I noticed the number of fish declining about seven years ago when there was a lot of illegal trawling at the time,” Hong said.