Zamami Island offers diverse reef diving across the Kerama Islands. The topography features a mix of reef and sand bottoms, allowing divers to explore shallow shorelines or head south for deeper sections reaching 30 metres. Access to these sites is exclusively by boat. Conditions are variable, with currents that require attention from divers. The water temperature ranges from 22C in February to 29C in September. Due to the presence of boat traffic, currents, and depth, divers should remain vigilant throughout their dive. This site is suitable for beginners, though the variable conditions necessitate careful planning and awareness of the surrounding marine environment.

Toma No.1 is a shallow reef site located off Zamami Island, Japan, offering depths ranging from the surface to 17 metres. This site is well-suited for beginner divers due to its mild currents and manageable conditions. Visibility is typically high, ranging between 20 and 40 metres. Access to the reef is by boat only. Water temperatures fluctuate throughout the year, reaching a low of 22C in February and a high of 29C between July and September. Divers should check locally for current boat operator schedules and facility availability prior to planning a visit.

Cape Zanpa is a wall and reef site located off Zamami Island, Japan. The topography features a wall that drops into depths between 15 and 30 metres. Visibility is typically between 20 and 30 metres, providing clear views of the wall face. The site is accessible by both shore and boat, though it is subject to strong currents that require careful planning around slack water. Due to these conditions and the depth, an advanced certification is required for divers. Water temperatures range from 22 to 29 degrees Celsius throughout the year. Divers should wear protective footwear to avoid injury from sharp coral and rocks, and remain vigilant for stonefish and lionfish in shallow areas.

Okinawa Islands Reef off Zamami Island is a boat-access site featuring a reef structure that spans depths from 10 to 30 metres. Divers can expect visibility ranging between 15 and 30 metres. The site is suited for intermediate divers, as moderate currents are common and can strengthen with little warning. Divers should maintain solid buoyancy control and monitor current strength throughout the dive. Water temperatures remain between 22 and 29 degrees Celsius year-round. It is recommended to plan dives by working into the current first to allow for a drift back toward the boat entry point. Always check locally for current conditions before departure.

Cape No.6, located on the east side of Zamami Island, is a reef site featuring varied topography with depths ranging from 8 to 25 metres, averaging 18 metres. Accessible only by boat, the site is situated 1000 metres from the shore. Divers can expect mild currents and visibility between 20 and 30 metres. The site is suitable for beginners and offers a typical dive duration of 50 minutes. Water temperatures fluctuate between 22C and 29C throughout the year. Hazards at this location include jellyfish, lionfish, sea urchins, sharks, sharp coral, and the potential for strong currents.

Zamami Cove, located off Zamami Island, features a reef and cave system at depths between 12 and 15 metres. This site is accessible only by boat and is suitable for beginner divers. Visibility typically ranges from 10 to 30 metres. Divers should be aware of moderate currents and remain close to their group. Hazards include boat traffic, jellyfish, sharp coral, and stonefish. Species recorded around this area include green sea turtles, titan triggerfish, clown triggerfish, broadclub cuttlefish, wrasses, Ijima's sea snakes, and blackback anemonefish. Local dive shops provide guided tours, equipment rental, and air fills to assist with navigation and safety.

Cape No.7, also known as Nanabansaki, is a drift dive site located 3000 metres off Zamami Island. The topography features a wall and reef system with depths ranging from 8 to 30 metres, averaging 18 metres. Due to strong currents, this site is suited for advanced divers. Visibility typically spans 15 to 30 metres. Water temperatures fluctuate between 22C and 29C throughout the year. Divers should be aware of hazards including jellyfish, sharp coral, and strong currents. Boat access is required for all dives, which generally last 50 minutes. Species recorded around this area include clown triggerfish, Ijima's sea snake, lined butterflyfish, and various species of butterflyfish, parrotfish, and pufferfish.

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.