Issou Omiya Mae is a reef dive site located in Japan. Divers access the site from the shore, with the reef situated approximately 50 metres from the entry point. The site features a consistent depth of 13 metres, making it suitable for beginner divers. Conditions at the site vary, with visibility ranging from 5 to 20 metres and mild currents present. Water temperatures fluctuate throughout the year, reaching a high of 29C in August and a low of 20C in February. Typical dives last around 40 minutes. Divers should exercise caution regarding sharp coral present at the site.

Shitogo is a reef site in Japan accessible only by boat. The topography features depths ranging from 8 to 19 metres, with an average depth of 12 metres. Divers and snorkellers should be prepared for moderate currents, which can occasionally become strong. Visibility at the site is variable, spanning 15 to 40 metres. Typical dives last approximately 45 minutes. Due to the current conditions, this site is best suited for intermediate divers. Water temperatures fluctuate throughout the year, ranging from 20C in February to 29C in August.

Amami & Ogasawara Reef is an offshore marine site in Japan requiring boat access. The reef features a range of depths and is subject to moderate currents that can strengthen, necessitating solid buoyancy control and mid-water positioning skills. Water temperatures fluctuate seasonally, ranging from 20C in February to 29C in August. Due to the offshore location and the potential for strong currents, divers must monitor their position closely and consult local operators regarding current flow before entering the water. Visibility at the site is variable, and divers should arrange air fills and equipment logistics with local providers in advance as on-site facilities are not confirmed.