It is a small island near Koh Mak, on Trat Province, Thailand.It can be reached with a sea kayak from Koh Mak or by walking during low tide. Koh Kham has nice places to snorkel, depending on the direction of wind.

Especially the southbeach has a calm sea, nice sand dune, black lava rocks with shells and crabs (or crayfishes or shellfishes). Near rocks, you may see (or swim over) black sea urchins that have 15-30 cm radius and many thin black pipes about 30-50 cm long (don't know the name, help wanted). Locals say that the pipes contain small needles and poison: if one touches the pipes and gets the needles, the needle should be crushed with a rock. The poison is only irritating and not lethal. In Thai, the name is Hoi Ment. It is endowed with natural wonders such as crystal clear seas, chie sandy beaches, coral reefs andmost importantly, tranquility and privacy. Ideal for swimming and diving, the trip to Koh Kham from Laem Ngob takes 2.5 hours.