Okinose W Arch is a reef site defined by a prominent arch structure located 1000 metres offshore. The site ranges from 15 to 20 metres in depth, with an average of 18 metres. Due to strong currents that can shift quickly, this site is suited for intermediate divers. Divers should time their descent around slack water and maintain close contact with the boat crew during entry and exit procedures to avoid drifting. Water temperatures fluctuate significantly throughout the year, ranging from 11C in March to 26C in August and September. Facilities are limited, so divers must arrive fully prepared with their own equipment.

Namerikawa is an artificial shore dive located on the Izu Peninsula in Japan. The site offers depths ranging from the surface down to 14 metres, making it accessible for beginner divers. Conditions are generally mild, though visibility is variable and can occasionally drop to zero. Water temperatures fluctuate significantly throughout the year, ranging from 11 to 27 degrees Celsius. Due to the risk of cold water and potential for low visibility, divers should use caution and carry a torch even during daylight hours. On-site facilities include parking, toilets, showers, changing rooms, and a rinse station, supporting a comfortable post-dive experience.