Koh Tae Nai in Ang Thong Marine Park offers a combination of natural reef and artificial reef structures. Suitable for beginners, the site features shallow depths ranging from 2 to 7 metres with an average of 5 metres. Access is by boat, located 400 metres from shore. Divers and snorkellers can expect mild currents and visibility between 10 and 30 metres. The site is best visited in the morning to avoid afternoon wind chop. Hazards include sharp coral and potential jellyfish; always check with the boat crew regarding current conditions before entering the water.

Koh Kong Kliang is a reef site located within Ang Thong Marine Park, offering depths between 6 and 14 metres with an average of 9 metres. This site is suitable for beginners and is accessible by boat only. The environment features mild currents and water temperatures ranging from 28 to 31C. Visibility is approximately 3 metres, requiring divers and snorkellers to move slowly and maintain awareness of the reef structure. Sharp coral and rock edges are present, so maintain a safe distance from the substrate to avoid injury. Night diving is permitted, and morning visits are recommended to maximise visibility before the water conditions change.

Haad Yao is a reef site located in Ang Thong Marine Park, Thailand, suitable for both beginners and snorkellers. The site features depths between 5 and 14 metres, with an average of 7 metres. Visibility ranges from 5 to 30 metres. Divers can access the site by boat or from the shore. Hazards include sea urchins on the seabed and sharp coral edges; visitors should shuffle their feet during entry and exit. Species recorded around this area include wrasses, butterflyfish, groupers, and anemonefish. Onshore facilities include parking, toilets, showers, and equipment rental. Night diving is permitted at this location.

Ban Tai Reef is a shallow shore-entry site located 50 metres from the coast within Ang Thong Marine Park. The reef is suitable for beginners, featuring an average depth of 2 metres. Divers can expect mild currents and visibility ranging from 2 to 10 metres. The site is well-supported by local facilities, including equipment rental, air fills, and guided tours. Due to the shallow nature of the reef, divers should be cautious of sharp coral. Typical dives at this location last approximately 45 minutes. The water temperature remains warm throughout the year, fluctuating between 28C and 31C.

Fish & Ships is a wreck dive located 2000 metres offshore in Ang Thong Marine Park. The vessel rests at depths between 18 and 35 metres, with an average depth of 25 metres. This site is strictly for advanced divers due to the overhead environment, moderate currents, and variable visibility ranging from 2 to 10 metres. Divers must manage risks including entanglement and low light conditions. Access is by boat only. The structure requires careful navigation and buoyancy control. Divers should carry primary and backup torches for interior sections. Plan dives to avoid penetration beyond training limits and monitor current strength, which can be significant.

Haad Salad is a shore-access reef dive located in Ang Thong Marine Park. The site features depths ranging from 8 to 14 metres, with an average depth of 10 metres, making it suitable for beginner divers. Conditions include mild currents and visibility that varies between 3 and 15 metres. Divers should exercise caution during shore entry due to the presence of rocks and sharp coral in the shallows. Sea urchins are present on the reef, so avoid touching the surface or kneeling. Night diving is available at this site, offering a different perspective on the reef environment. Local dive shops provide equipment and guidance for those planning a visit.

Mae Haad is a reef site located in Ang Thong Marine Park, suitable for both diving and snorkelling. The site features depths ranging from 8 to 20 metres, with an average of 14 metres. Conditions include mild currents and visibility that varies between 5 and 30 metres. Access is available via shore or boat. Divers should be cautious of sharp coral and rocks, as well as sea urchins hidden in crevices. Jellyfish are also present, making a full rash guard or thin wetsuit advisable. On-site facilities include a dive shop, equipment rental, and air fills. Night diving is available for those interested in exploring the reef after dark.

Koh Ma in Ang Thong Marine Park features a shelving coral reef that transitions from shallow depths to black and soft corals. Divers and snorkellers can explore this site at depths ranging from 5 to 25 metres, with an average of 12 metres. The reef supports a variety of marine life, including wrasses, groupers, Copperband Butterflyfish, Golden Butterflyfish, Blacktip Grouper, and Blue-barred Parrotfish. Less frequently, visitors may encounter Blue Ringed Angelfish, Harlequin Sweetlips, Pink Skunk Anemonefish, Longfin Bannerfish, Magnificent Giant Anemone, Rock Cod, Eightband Butterflyfish, and Porcupinefish. The site is suitable for beginners, offering mild currents and visibility between 10 and 25 metres. Entry is possible by both boat and shore.