Koyoko Island in Kashiwajima features a diverse reef and cave system ranging from 5 to 40 metres in depth. The site is accessible only by boat and is suited for intermediate divers due to moderate currents and the presence of overhead cave environments. Visibility typically spans 15 to 30 metres, with water temperatures fluctuating between 17 and 25 degrees Celsius throughout the year. Divers exploring the caves should maintain solid buoyancy control and carry a torch. Given the overhead environment and current, ensure you possess the appropriate training and comfort level for confined spaces before planning a visit to this site.

Yokoshima Danso is a reef and wall dive located off Kashiwajima, Japan. The site is suitable for beginner divers, featuring a wall structure that provides a clear vertical reference for buoyancy control. Dives here reach a maximum depth of 15 metres and are characterised by mild currents. Access to the site is by boat only, requiring advance arrangements with a local charter. Water temperatures fluctuate between 18 and 27 degrees Celsius throughout the year. Divers visiting between autumn and spring should prepare for the cooler 18-degree water by wearing a 5 mm wetsuit.

Yokoshima 2 gōchi is a reef site located off Kashiwajima, Japan, featuring depths ranging from the shallows down to 21 metres. This site is suitable for beginners due to the mild currents and manageable conditions. Divers can explore the reef structure, which provides habitat for various reef fish and invertebrates. Visibility at this site is variable, and the use of a torch is recommended to observe life tucked into the reef crevices. Water temperatures fluctuate between 18C and 26C throughout the year. Access to the site is by boat, and divers should ensure all necessary equipment and refreshments are organised prior to departure.

Gochi Ohanabatake is a boat-access drift dive located off Kashiwajima, Japan. The site features a dynamic underwater environment reaching depths of 26 metres. Divers must be prepared for strong currents, which are a defining characteristic of this location. Due to the nature of the drift and the depth profile, this site requires careful monitoring of conditions and personal depth limits. Boat access is mandatory for this dive. Divers should coordinate with local operators to time entries correctly, as current strength can vary significantly. Ensure all necessary equipment, food, and water are prepared before departure, as facilities at the site are unconfirmed.

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.

Kashima Coral Beach in Kashiwajima features a reef that begins at the surface and transitions into a drop-off reaching 19 metres. This site is suitable for beginners, though divers must remain aware of strong currents that can affect air consumption. Visibility varies significantly, occasionally reaching 50 metres. Access is strictly by boat, and local dive shops provide necessary charter services. The site supports a variety of reef fish and invertebrates typical of the region. Due to the significant drop-off and current, careful monitoring of depth and conditions is required throughout the dive.

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.