The bay in front of the island is sheltered and shallow. It is an excellent place to try a PADI Discover Scuba Diving experience with one of Blue Guru's experienced instructors.
The bay tapers off several hundred metres away from east coast of Koh Tachai. Here the water colour on the surface changes from turquoise to the typical deep blue signifying deeper waters. The scuba diving in this area is still relatively easy and there are greater chances to see larger animals such as leopard sharks resting on the bottom or the occasional manta ray passing by