Sai Cheung Kok is a shallow, calm reef site located in Hainan, China. Accessible directly from the shore, this location serves as a relaxed environment for both diving and snorkelling. Water temperatures fluctuate between 19 and 29 degrees Celsius throughout the year. Divers and snorkellers should note that visibility is variable and may drop to five metres, requiring close proximity to your group and careful monitoring of changing underwater conditions. As there are no confirmed facilities on site, visitors should arrive self-sufficient with all necessary gear and supplies. The site is suitable for those seeking a gentle introduction to reef exploration.

Ghost Bay is a reef site located 1000 metres off the coast of Hainan, China. The reef structure extends from 8 metres down to a maximum depth of 30 metres, with an average depth of 15 metres. Access is exclusively by boat. Visibility is variable, ranging between 6 and 27 metres, and water temperatures fluctuate from 20 to 27 degrees Celsius. Divers should remain aware of strong currents and exercise caution around sharp coral formations. The site supports a variety of tropical reef fish and invertebrates. Typical dives last approximately 50 minutes, and all equipment and refreshments must be arranged prior to departure from the shore.

Yin Tsz Ngam is a wreck site located off the East Dam in Hong Kong. The structure sits in shallow water, reaching a maximum depth of approximately 12 metres, making it suitable for beginner divers. Access is by boat, and the site typically experiences mild currents. Divers can observe various marine life around the wreck, including scorpionfish, pufferfish, and nudibranchs. Other species recorded here include zebra lionfish, wrasses, groupers, golden butterflyfish, flatworms, white-spotted puffers, Clark's anemonefish, boxfish, bluestreak cleaner wrasse, barred soapfish, and tube worms. Visibility can vary significantly, so checking local conditions before departure is recommended. Water temperatures fluctuate between 19C and 29C throughout the year.

Tan Ka Wan, located near the East Dam in Hong Kong, is a shallow reef site suitable for beginners. Divers access the water via a shore entry, where depths typically range between 1 and 1.5 metres. Conditions are generally mild, though divers should remain aware of boat traffic and sharp coral in the area. Water temperatures fluctuate throughout the year, ranging from 19C in January to 29C during the summer months. While specific sightings at this exact location are limited, species recorded around this area include various wrasses, butterflyfish, pufferfish, and dragonets, alongside occasional nudibranchs and lionfish.

Sangzhou is a marine dive site located in Hainan, China, offering depths ranging from the surface to 10 metres. The site is accessible by both shore and boat, making it a practical location for diving course instruction and reactivation dive reviews. Water temperatures fluctuate throughout the year, ranging from 18C in January to 29C in September. Due to the nature of the area, divers should remain aware of boat traffic while in the water. The site is suitable for beginners looking to gain experience in a controlled environment.

East Dam in Hong Kong is an artificial reef structure located 1000 metres from the shore. This site offers shallow, accessible diving with depths ranging from 3 to 10 metres, averaging 6 metres. It is well-suited for beginners due to the mild current and relaxed conditions. Visibility typically fluctuates between 3 and 8 metres, and divers should remain aware of boat traffic in the area. Water temperatures vary from 19C in January to 29C in September. Divers must access this site by boat and are advised to deploy a surface marker buoy before ascending to ensure safety.

Hainan Artificial Reef combines natural reef structures with artificial elements, offering a varied environment for beginner divers. Located 1500 metres from shore, the site requires boat access. Divers can explore depths ranging from 5 to 22 metres, with an average of 15 metres. Conditions vary, with visibility fluctuating between 2 and 15 metres and moderate currents present. Due to potential entanglement hazards around the artificial structures, divers should keep equipment secured and dive with a guide. The site supports a range of reef fish and invertebrates typical of the region. Facilities including air fills, equipment rental, and boat charters are available to support 45-minute dives.

Basalt Island, located near East Ninepin Island, features a reef environment suitable for beginners and snorkellers. The site ranges from the surface to a maximum depth of 13 metres. Divers frequently encounter Zebra Lionfish, Flamingo Tongue, and Clark's Anemonefish. Other species recorded here include Robust Ghost Pipefish, Chromodoris Nudibranch, Stonefish, Indian Lionfish, Scorpionfish, White-spotted Puffer, Flatworm, Pufferfish, Rock Cod, Starry Puffer, and various wrasses. Access is by boat only. Conditions, including visibility and current, are variable. Due to active boat traffic in the Sai Kung area, divers must deploy a surface marker buoy before ascent and remain aware of their surroundings.