4. Witness a Glowing Beach
During the wee hours on the island of Koh Rong, you can witness the world famous plankton popping up through the waters and illuminating the coastal waters with a bright blue glow. When it’s dark enough, the glow of millions of plankton can even light up the water one meter below the surface. For the brave of heart, throw on snorkeling gear and witness the plankton up close and personal in their natural habitat.