Kabushiwa is a shore-entry reef site located on the Izu Peninsula in Japan. The site reaches a maximum depth of 13 metres and features mild currents, making it suitable for beginner divers. The topography consists of rocky structures and mossy corals. Divers should exercise caution during entry due to the presence of sharp rock in the shallow areas; wearing protective footwear and gloves is recommended. Water temperatures fluctuate significantly throughout the year, ranging from 12 to 27 degrees Celsius. As facilities are not confirmed at this location, visitors should arrive prepared with all necessary gear and supplies.

Minami Echizen is a shore entry site on the Izu Peninsula featuring a diverse underwater landscape of reefs, artificial structures, and pinnacles. The site is suitable for beginners, with depths ranging from the surface to 10 metres and mild currents. A thermocline often exists, separating warmer surface layers from cooler deeper water. Shore facilities include parking, toilets, showers, a rinse station, and equipment rental, making it convenient for visitors to manage their gear. Visibility can shift significantly between visits, which influences the overall experience. The site is accessible year-round for both diving and snorkelling activities.

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.

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.