Uguru Island is an open-water reef site located off Kashiwajima, Japan. The reef structure extends from 3 to 28 metres, with an average depth of 15 metres. Visibility is variable, ranging from 10 to 50 metres. Access is exclusively by boat, and the site is suitable for beginners, though divers must remain aware of potential strong currents. Water temperatures fluctuate between 17C and 26C throughout the year, necessitating appropriate thermal protection. Divers should always coordinate with the boat crew regarding current strength and local water movement before entering the water.

Nishiumi is a reef site located in Kashiwajima, Japan, offering depths between 8 and 18 metres with an average of 12 metres. Divers can expect visibility ranging from 10 to 25 metres. The site features a mix of reef structures, including rubble and encrusted surfaces. Conditions are generally manageable with mild currents, though localised stronger surges can occur. Entry is possible via both shore and boat. Divers should exercise caution regarding sharp coral and rock formations to avoid injury. Guided tours and air fills are available on-site to assist with navigation and safety.

Senohama Reef is an artificial reef located off Kashiwajima, Japan. The site features a structure resting at depths between the surface and 12 metres, providing a suitable environment for beginner divers. Access to the reef is by boat only. The site is characterised by mild currents, allowing for a relaxed exploration of the artificial structure. Water temperatures fluctuate throughout the year, ranging from 18C in the winter months to 27C during the summer. As visibility at this site is variable, it is recommended to consult with your charter operator regarding recent conditions before planning your dive.

Nyanko Rock is a reef site in Kashiwajima, Japan, accessible only by boat. The site features depths ranging from 5 to 25 metres and is suitable for beginners due to the mild currents. Water temperatures fluctuate between 17C and 26C throughout the year. Divers should maintain neutral buoyancy and avoid contact with the seabed, as the reef contains sharp coral and stonefish. Visibility at the site can vary significantly between visits, so it is recommended to consult with your boat operator regarding current conditions before departure. The reef environment supports a variety of reef fish and invertebrates typical of the region.

Akahae is a reef and drift dive site located off Kashiwajima, Japan. The site features hard coral structures and reaches depths of up to 20 metres. Due to the presence of strong currents, this location is suited for intermediate divers who possess confident buoyancy control. Boat access is required for all dives. Divers should carefully monitor current timing, as the flow can be intense and may significantly impact dive duration. Visibility at the site is variable, requiring divers to be proficient in site reading. As local facilities are unconfirmed, divers must arrive self-sufficient with all necessary equipment, including a surface marker buoy.

Kurohae is a drift dive located off Kashiwajima, Japan, characterised by moderate to strong currents. The site features a reef structure extending from the shallows to a maximum depth of 22 metres. Divers should be prepared for varying current speeds, which can shift from manageable to demanding depending on the tidal phase. Due to these conditions, the site is suited for advanced divers. Entry is exclusively by boat. Divers must monitor their depth gauge and current conditions closely throughout the dive. Carrying a surface marker buoy is recommended for the ascent, and checking tide tables with your boat operator is essential for planning a safe drift.

South Rock is a wall dive located 1000 metres offshore from Kashiwajima, Japan. The site features a wall dropping to a maximum depth of 25 metres, with an average depth of 30 metres. Divers should expect moderate currents, which necessitate solid buoyancy control and careful planning around slack water periods. Visibility at the site typically ranges between 10 and 20 metres. Water temperatures fluctuate seasonally, ranging from 18C in the winter months to 26C in late summer. Access to this site is exclusively by boat. Due to the current and depth profile, this location is best suited for intermediate divers.

Kode no dokutsu is a cave dive located 1000 metres offshore from Kashiwajima. The site features a cave system with depths ranging from 10 to 25 metres, averaging 18 metres. Divers must navigate a mild current and maintain precise buoyancy control to avoid contact with the cave structure. Due to the overhead environment, this site is suitable for intermediate divers with appropriate cave training. Access is by boat only, and a typical dive lasts 50 minutes. Visibility varies between 5 and 15 metres. Divers should carry both a primary and backup torch for safety when exploring the cave interior.