Kohamajima Island offers reef and drift diving in the Kabira Area of Japan. The site features depths between 5 and 18 metres, averaging 12 metres, with visibility ranging from 15 to 30 metres. The reef structure consists of Eda, table, and Ryukyukicka corals. Divers can expect to encounter a variety of reef fish and invertebrates typical of the region. Currents are variable, requiring attention during dives. Access is by boat only, and the site is suitable for beginners. Facilities including air fills, equipment rental, and guided tours are available. Divers should be aware of jellyfish, sharp coral, and shifting currents.

Kuroshima Nakamoto Cave is a boat-access site located in the Kabira Area of Ishigaki Island. The topography features a reef system combined with a cave section, with depths ranging from 10 to 23 metres. While the site experiences mild currents, the presence of an overhead environment requires careful navigation and awareness of your position at all times. Visibility can vary significantly between dives, so it is recommended to consult with your operator regarding current conditions before entering the cave. This site is suitable for beginners, provided they maintain close proximity to their guide and adhere to safety protocols for overhead environments.

Phantom Island, also known as Hamashima, is a crescent-shaped sandbar in the Kabira Area that emerges only during low tide. Located within the Sekisei Lagoon, this site offers shallow coral gardens suitable for beginners. Snorkelling takes place in depths ranging from 1 to 10 metres, with an average depth of 5 metres. Access is by boat, as the site is approximately 10 kilometres from the shore. Conditions are generally mild with visibility between 15 and 30 metres. Water temperatures fluctuate between 23C and 30C throughout the year. Facilities at the site include showers. Divers and snorkellers should be aware of sharp coral in the area.

Three Rocks is a reef and pinnacle site located 150 metres offshore in the Kabira Area of Ishigaki Island. Suitable for beginners, the site features depths ranging from 3 to 17 metres with an average of 8 metres. Divers and snorkellers encounter mild currents and visibility between 5 and 15 metres. The topography includes overhead swim-throughs and sharp coral structures. Species recorded around this area include ribbon eels, coral groupers, anemonefish, and various wrasses. Boat access is required, and night diving is available. Divers should exercise caution regarding boat traffic, rip currents, and sharp coral edges while maintaining awareness of their surroundings.

Kuroshima V-Drop is a wall and drop-off site in the Kabira Area where the reef edge descends sharply from 5 metres to depths of 30 metres. This topography provides a clear view of the wall face, with visibility ranging from 15 to 30 metres. While the site is suitable for beginners, who should remain in the shallower 5 to 12-metre section, divers must be prepared for moderate currents and potential thermoclines that can cause water temperatures to drop by 2 to 3 degrees Celsius. Boat access is required for all entries due to the rapid drop-off and variable current conditions. Always consult your operator regarding current strength before descending.

Kinme is a sheltered reef site located in the Kabira Area of Ishigaki Island. Reaching a maximum depth of 18 metres, the site features mild currents, making it a suitable choice for beginner divers. Access to the reef is exclusively by boat. Divers can explore the reef structure and sandy patches, which provide a variety of habitats. Water temperatures at this location range from 23 to 30 degrees Celsius throughout the year. As visibility can vary, it is recommended to check current conditions with a local dive operator before planning a visit.

Osaki is a shallow reef site located in the Kabira Area of Ishigaki Island. Divers can explore depths ranging from 5 to 17 metres, with visibility typically spanning 20 to 40 metres. The site features a mild current, making it suitable for beginner divers. The topography consists of reef structures and sandy patches. When navigating the area, maintain distance from the seabed and exercise caution near the reef to avoid contact with lionfish and stonefish. Access to this site is by boat only. Natural light is generally good throughout the day, though early boat trips often provide the calmest surface conditions.

Osaki Batfish Reef in the Kabira Area is a reef site ranging from 5 to 35 metres in depth, with an average depth of 15 metres. Accessible only by boat, the site is located 300 metres from shore. Divers encounter moderate currents that can shift and intensify, requiring careful planning with boat crews. Visibility typically ranges between 20 and 30 metres. The topography features reef structures that demand caution regarding sharp coral, sea urchins, and stonefish. Due to the potential for strong currents, particularly at the surface, this site is best suited for those comfortable with variable conditions. Typical dive times are approximately 50 minutes.