Uminchu is an artificial reef located off Zamami Island, Japan, featuring a structure that descends to a maximum depth of 25 metres. The site is characterised by strong currents that require careful planning and coordination with surface support teams. Visibility at the site typically ranges between 10 and 30 metres. Due to the nature of the currents, this site is suited for intermediate divers. Access is exclusively by boat, and divers should consult with local operators regarding tidal shifts and current direction before entry. Water temperatures fluctuate between 22 and 29 degrees Celsius throughout the year.

Tokashiku Beach Front is a sheltered shore dive on Zamami Island, Japan, featuring a reef that ranges from 2 to 6 metres in depth. With visibility typically between 20 and 30 metres, the reef layout is easily visible from the surface. The site experiences mild currents, making it suitable for beginner divers. Divers should exercise caution in the shallows, as stonefish, lionfish, sea urchins, and sharp coral are present. Protective footwear and reef gloves are recommended to prevent injury. On-site facilities include parking, showers, changing rooms, and toilets, providing a convenient base for shore entries.

Ariga Cable is a reef dive site located off Zamami Island in the Kerama Islands. The site features a consistent depth of approximately 7 metres, with an average depth of 20 metres recorded in the area. Access is by boat only. Divers should be prepared for mild currents and visibility ranging from 10 to 25 metres. Water temperatures fluctuate between 22C and 29C throughout the year. Potential hazards at this location include jellyfish, lionfish, rip currents, sea urchins, and stonefish. Due to the conditions and environment, this site is best suited for intermediate divers.

Okinawa Islands Reef #1 is a shore-entry reef site located off Zamami Island. Divers can expect visibility ranging from 10 to 30 metres and water temperatures between 22 and 29 degrees Celsius. The site features a shallow reef structure suitable for newly certified divers, though variable currents and surf conditions require careful monitoring during entry. Due to the presence of jellyfish and surf, a full wetsuit with gloves is recommended. Species recorded around this area include green sea turtles, titan triggerfish, regal angelfish, clown triggerfish, turkey moray, lunartail grouper, day octopus, wrasses, Ijima's sea snake, blackback anemonefish, moorish idol, flagtail triggerfish, pink skunk anemonefish, and lined butterflyfish.

Aharen Beach on Zamami Island is a reef site suitable for both diving and snorkelling. Located within the Kerama Islands, this shore-entry site features depths ranging from 1 to 6 metres, with an average depth of 3 metres. Divers and snorkellers can explore the reef approximately 50 metres from the shore. Conditions are generally mild, with visibility reaching between 20 and 50 metres. Water temperatures fluctuate between 22C and 29C throughout the year. Visitors should be aware of boat traffic in the area. On-site facilities include parking, toilets, showers, changing rooms, a rinse station, equipment rental, a cafe, and a dive shop.

Nozaki is a reef dive site situated off Zamami Island, offering depths between 5 and 15 metres with an average of 10 metres. Divers access this site by boat. Visibility is typically between 20 and 30 metres, allowing for clear views of the reef structure. Water temperatures fluctuate between 22 and 29 degrees Celsius throughout the year. The site is suitable for beginners, though divers must be aware of moderate to strong currents that can develop without warning. It is recommended to remain close to the boat entry point and maintain solid buoyancy control throughout the typical 50-minute dive.

Zamami Lighthouse is a diverse site featuring a combination of wall, cave, and reef topography. Suitable for beginner divers, the site reaches depths of up to 18 metres. Conditions are generally manageable due to mild currents, though visibility can vary. Access is by boat, and arriving early in the day is recommended for calmer surface conditions. Water temperatures remain comfortable throughout the year, ranging from 22 to 29 degrees Celsius. Divers should consult with their boat operator regarding current conditions before entering the water.

Crevasse is a reef site located 2000 metres off Zamami Island in the Kerama Islands. Accessible only by boat, the site features depths ranging from 8 to 16 metres with an average of 12 metres. Divers and snorkellers can expect mild currents and visibility between 10 and 25 metres. The topography consists of a reef structure that requires careful navigation to avoid sharp coral and sea urchins. Protective footwear is recommended, and divers should exercise caution when placing hands or feet on the reef. Typical dives last approximately 45 minutes. As there are no fixed facilities at this location, all boat and equipment arrangements must be confirmed with an operator in advance.