A wonder In The Thailand Andaman Sea. One of Thailand's unseen highlights,Thale Waek (Separated sea), the amazing phernomenon happens when there is a low tide and water level is down till, is situated along Koh (island or islets) Dam Hok and Koh Dam Kwan. These two, each of which offers one spectacular beach, are surrounded by about ten smaller, all-rock islands that have no real beaches.