Introduction

Patong Bay, specially at Tri Trang (or Ni Kang Bay) was a famous diving destination for both scuba and snorkeling. The Tri Trang coral reef ecosystem was the diverse community which housed thousands of living organisms. For example giant clam, spiny lobster and various kind of fish. Patong Bay, and Tri Trang bay, have been threatened for a decade by many factors, such as the inappropriate activities from land development, tourism and natural disaster. The natural disaster such as global
warming and tsunami phenomenon in December 2004 caused severe damage to the coral reef in this area. In addition, the irresponsible land development, the erosion and waste water from land have destroyed the coral and ruined the natural recovery process of the coral reef.