Dobuiso is an advanced dive site in Japan featuring a combination of reef, wall, and pinnacle topography. The site is defined by strong currents that require divers to possess proficient current-reading skills. The structure extends from the shallows down to a maximum depth of 22 metres. Due to the challenging conditions and potential for strong water movement, boat access is mandatory. Divers should monitor their depth closely and remain in proximity to the boat throughout the dive. Visibility at this location is variable, and the use of a surface marker buoy is recommended. The site supports a variety of reef fish and invertebrates typical of the region.

Maguroana is a boat-access reef site located in the Ogasawara Islands, Japan. The site reaches depths of up to 23 metres and is suitable for beginners. Water temperatures fluctuate between 21C and 28C throughout the year. Because the site experiences variable currents that can change without warning, divers should monitor local conditions closely and coordinate all entry and exit points with their boat captain. As there are no facilities at the site, ensure all necessary equipment, hydration, and sun protection are prepared on the boat before departure. Always consult with your operator regarding current conditions on the day of your dive.