Koh Rok is a diverse marine site located near Koh Haa, Thailand, offering a mix of reef, muck, drift, and cave topography. With depths ranging from 5 to 25 metres and an average of 12 metres, the site is suitable for beginners. Access is by boat only, situated 20 kilometres from the shore. Conditions include mild currents and visibility between 5 and 30 metres. Water temperatures remain consistently warm, between 29 and 31 degrees Celsius. Divers and snorkellers should be aware of potential hazards including boat traffic, jellyfish, lionfish, sharks, sea urchins, sharp coral, and strong currents. Night diving is available at this location.

Ko Rok Nok offers a combination of reef and muck diving environments in the Andaman Sea. The site features depths ranging from 15 to 23 metres, with an average depth of 15 metres, making it suitable for beginner divers. Visibility typically fluctuates between 10 and 30 metres. Access is exclusively by boat, requiring a journey from Koh Lanta. Divers should be aware that currents can strengthen quickly, necessitating close proximity to a guide and careful monitoring of position relative to the boat. Night diving is available at this location. Water temperatures remain between 29 and 31 degrees Celsius throughout the year.

Ko Rok Noi is a reef and muck site located near Koh Haa, Thailand, accessible only by boat. The site features a varied topography with coral heads, particularly along the southeast coast. Depths range from 3m to 30m, with an average depth of 12m, making it suitable for beginners. Conditions are generally mild with visibility between 10m and 30m. Water temperatures remain consistently warm throughout the year, ranging from 29C to 31C. The site is suitable for both diving and snorkelling, with night diving also available. Divers and snorkellers should be aware of potential hazards including jellyfish, sharks, sharp coral, and strong currents.

Koh Rok Noi is a reef and drift dive site located in the Andaman Sea, suitable for intermediate divers. The topography features boulder corals, sea whips, and anemones, with depths ranging from 5 to 30 metres. Visibility typically reaches between 10 and 30 metres. Divers must access the site by boat, and moderate currents are common, requiring careful monitoring of conditions. Night diving is available, offering opportunities to observe nocturnal activity. Due to the potential for strengthening currents and the presence of sharp coral and rocks, divers should carry a surface marker buoy and maintain distance from the reef structure.

Lak Siam is a reef dive located at Koh Haa, Thailand, suitable for beginner divers. The site features depths ranging from 5 to 19 metres with an average of 12 metres. Access is by boat, and visibility typically spans 15 to 30 metres. Divers frequently encounter Melon Butterflyfish, Moon Wrasse, and Rabbitfish. Other species recorded include Ocellaris Anemonefish, Moorish Idols, and various parrotfish and groupers. While currents are generally mild, they can increase, requiring divers to monitor their position. Hazards include stonefish, lionfish, sea urchins, and sharp coral. Divers should exercise caution regarding hand and fin placement on the reef structure to avoid contact with these organisms.

Ko Rok Yai is a reef and muck site located in the Andaman Sea, forming part of the Ko Rok islands. The site features a reef extending along the southeast coast, offering depths ranging from 5 to 35 metres with an average of 12 metres. Conditions are generally suitable for beginners, with mild currents and visibility between 10 and 30 metres. Water temperatures remain consistent, typically between 29 and 31 degrees Celsius. Access to this site is by boat only, with a typical dive duration of 50 minutes. The area is protected by a National Park and provides facilities including toilets, showers, and a cafe.

Hin Ngam is a reef and pinnacle site located at Koh Haa, Thailand. Suitable for beginners, the site features depths ranging from 5 to 20 metres with an average of 10 metres. Visibility typically spans 10 to 30 metres. Access is by boat only, and divers should be aware of mild currents that can increase unexpectedly. The reef structure includes fire coral, bubble corals, giant barrel sponges, and gorgonian sea fans. Divers may encounter sharks at this location; maintain a calm presence and keep distance. Always check current conditions with your dive operator before entry and remain near the reef for shelter.

The Koh Kraden Wreck is a dedicated advanced dive site located 20 kilometres from shore near Koh Haa. Resting at depths between 24 and 26 metres, the wreck requires solid buoyancy control and comfort in overhead environments. Visibility is typically 5 to 10 metres, often affected by a thermocline below 15 metres. Divers must be prepared for mild currents that can strengthen quickly. Access is by boat only, and a torch is recommended for exploring interior sections. Due to loose lines and debris within the structure, divers should remain streamlined to avoid entanglement risks. Always confirm current conditions with your dive operator before descending.