Hon Dai is a reef site located within the Cham Islands, Vietnam. The reef structure extends from the surface to a maximum depth of 18 metres. Divers can expect mild currents, though visibility varies significantly and should be checked locally before diving. Access is strictly by boat, and divers must use a surface marker buoy during ascent to remain visible to boat traffic. The site features a variety of reef fish and invertebrates throughout the structure. Divers should maintain proper buoyancy to avoid overhead environments such as caves or swim-throughs present on the reef. This site is suitable for intermediate divers.

Hon Dai North is a reef site located within the Cham Islands, Vietnam. Suitable for beginners, the site features depths ranging from 5 to 18 metres and mild currents. Divers access the reef by boat, with visibility typically between 10 and 25 metres. Water temperatures fluctuate from 24 to 30 degrees Celsius throughout the year. The site offers opportunities for night diving and supports a variety of reef fish and invertebrates typical of the region. Facilities including guided tours, equipment rental, and air fills are available. Divers should remain cautious of sharp coral structures and the presence of jellyfish.

Hon Mo is a reef dive located in the Cham Islands, offering a depth range of 4 to 18 metres. The site features varied reef terrain suitable for beginner divers. Divers can expect mild currents and visibility ranging from 10 to 25 metres. Water temperatures fluctuate between 24 and 30 degrees Celsius throughout the year. Access to this site is by boat only. Divers should exercise caution regarding buoyancy and hand placement, as the reef contains sharp coral and rocks that can cause cuts. Always confirm departure times and local operators before planning a trip to the site.

Hon Tai is a small, uninhabited island within the Cham Islands archipelago, featuring a reef that fringes its northern shore. The site offers depths ranging from 2 to 20 metres, with an average depth of 10 metres, making it suitable for beginners. Divers and snorkellers can explore the reef structure, which is home to hard and soft corals, crinoids, giant clams, and starfish. Access to the site is by boat, located 19 kilometres from the shore. Conditions are generally mild with visibility between 10 and 30 metres. Water temperatures fluctuate throughout the year, ranging from 24C to 30C. Divers should be aware of sharp coral present on the reef.

Hon Tai South is located on the southern edge of the Cham Islands reef system. This site features a reef slope ranging from 5 to 20 metres, with an average depth of 15 metres. Conditions are generally comfortable for beginners, with mild currents and visibility typically between 10 and 25 metres. Snorkellers can explore the shallower 5 to 8 metre sections, while divers can navigate the slope. Water temperatures range from 24 to 30C, though a thermocline can drop bottom temperatures to approximately 18C. Access is by boat only. Divers and snorkellers should exercise caution regarding buoyancy to avoid contact with sharp coral and rocks present throughout the site.