Otomi Beach is a shore-entry reef site in Japan suitable for beginners. The site features depths ranging from 1 to 10 metres with mild currents. Visibility varies significantly, fluctuating between 3 and 30 metres depending on conditions. The water temperature ranges from 12C in winter to 27C in late summer. The habitat supports a variety of reef fish and invertebrates typical of the region. Divers should be aware of potential hazards including jellyfish and stonefish. Facilities are available at the local dive shop.

Slope Beach is a shore-entry reef dive on the Izu Peninsula suitable for beginner divers. The reef topography slopes gently from 5 to 15 metres, providing a controlled environment to practice buoyancy. Divers can expect mild currents and visibility between 5 and 15 metres. The site features a variety of reef habitats that support diverse marine life, including various invertebrates and reef fish typical of the region. Shore entry requires caution due to sharp coral, rocks, and potential surge. On-site facilities include parking, toilets, showers, changing rooms, and a dive shop offering guided tours and equipment hire.

Chishima is a wall and reef system in Japan that descends from 5 to 40 metres. This site is suited for intermediate divers, offering visibility between 15 and 21 metres. The topography features a distinct drop-off that requires boat access to avoid dangerous surf and shore break. Divers should monitor moderate currents, which can influence drift along the wall. Water temperatures fluctuate between 12 and 23 degrees Celsius throughout the year, necessitating appropriate exposure protection. Typical dives last approximately 40 minutes. Due to the significant depth and current conditions, coordinate all entry and exit logistics with a boat skipper.

Komatsu is a reef and kelp forest site located off the Izu Peninsula in Japan. Reaching depths of up to 17 metres, the site provides a suitable environment for beginner divers. The underwater topography features a mix of reef structures and kelp growth, which support a variety of temperate marine life and invertebrates. Water temperatures fluctuate significantly throughout the year, ranging from 12°C to 27°C, and a dry suit is often recommended during cooler months. Access is by boat only. Divers should remain aware of variable currents and active boat traffic in the area, particularly during surface ascents, and are advised to use a surface marker buoy.