Koh Tachai

Another 20 kilometers north of Koh Bon lays Koh Tachai. Unlike Koh Bon, Koh Tachai has a sensational stretch of white beaches and nice sheltered areas perfect for snorkeling and night diving. Koh Tachai is the last and most northern island of the Similan Island National Marine Park.

Koh Tachai can be divided into two dive sites. The koh Tachai Plateau is definitely the most exhilarating part of the site. However, 500 meters away from the beach, completely out in the blue, this Plateau is very exposed to currents, and not always possible to dive. The Plateau is made of large and small granite rocks as well as loads of hard and soft coral patches. The coral garden covering the plateau is the most colorful in the area.

The Koh Tachai reef lays much more sheltered, and makes a perfect alternative if the currents are too strong to dive the Plateau. The easy current makes Koh Tachai a perfect drift dive for all level of experience. The best time of the day to dive Koh Tachai is the late afternoon. The abundant amount and variety of marine life is coming out from their shelters and amuse themselves around one of the beautiful bommies, table, brain, staghorn and fire corals is magnificent.

Currents                       

Especially on the Plateau, the current can be extremely strong, making the Koh Tachai Plateau quite a challenging dive. On the Koh Tachai reef, the much milder current normally runs from the south direction.

Marine life                        

Koh Tachai is home to endless schools of fusiliers, travelly’s, barracuda’s, batfish and tuna cruising around. Leopard sharks, Marble Rays, Jenkens Whiptails, Kuhl’s and Manta Rays, flounders, garden eels as well as oceanic triggerfish hang around on the sandy patches at assorted depths. Like any dive in the Similans, don’t forget to spend time looking in between all the corals and holes, to find cool stuff such as large Moray Eels, Lion fish, cuddle fish, octopus, Lobsters, Nudibranchs, Manta Shrimps, banded cleaner shrimps and small glass Shrimps and Pipefish.