This dive site, Hua Chedi Koh Ngam Yai, also known as Chedi Rock, is located south of Koh Ngam Yai in Thailand. It serves as an excellent spot for check dives and as the initial dive of many trips, indicating its beginner-friendly nature. The site features a flat sandy bottom, with depths ranging from 8 to 16 meters, averaging around 7 meters. Navigation is straightforward, making it easy for newer divers, though occasional currents may be encountered around turning points.
Divers can expect to see vibrant marine life, including abundant sea anemones and their resident Indian clownfish. The site is also home to various nudibranch species, making it a treat for macro enthusiasts. The predominant fish species encountered here are triggerfish, which, while interesting, may require caution. There's also a mention of seeing a "Humph", potentially referring to larger reef fish or Humphead wrasse.
The site is characterized by beautiful, clear water, enhancing the diving experience throughout the year, though specific peak seasons for visibility and marine activity might vary locally. It's particularly well-suited for snorkelers and freedivers due to its shallow depths and rich, accessible marine life. For divers, practicing buoyancy is key, especially given the flat sandy bottom and the potential for currents at turning points. Keep an eye out for triggerfish, maintaining a respectful distance.

