Koh Tachai is a small island appears quite a bit like another Similan Island. Koh Tachai is a small rocky island with an attractive white sandy beach. 

Most of Koh Tachai’s visitors stay on and off the beach to sunbath, swim and snorkel, whereas essentially the most adventurous try to reach the viewpoint on the west coast of the island that can be reached via a steep path situated towards the northern end of the beach. There are actually 2 pinnacles, the biggest to the south where any dive will start. The top is dome shaped and covered in exhausting corals at about 12 – 14 meters depth.

The mighty Whale sharks and Manta rays are often spotted here feeding within the rich waters. You may keep in a single day in a campsite, which includes a small restaurant and opportunities to discover the island. The primary actions on and across the island are Scuba diving, Snorkeling, having fun with multiple nature trails alongside the coast and through the jungle and stress-free on the beach.