Triangle is a pinnacle and reef system located 500 metres offshore from the Izu Peninsula. The site ranges from 10 to 21 metres in depth, with an average depth of 12 metres. Divers access the site by boat, where moderate to strong currents are common. The topography features a reef structure covered in soft corals. Visibility varies between 5 and 20 metres. Due to the potential for strong currents and depths reaching 21 metres, divers should monitor their gauges and maintain close contact with their guide. Facilities including changing rooms, showers, and a rinse station are available at the operator base.

Enoura is a shore-entry dive site on the Izu Peninsula featuring a diverse layout of natural reef, cave sections, and artificial reef structures. Suitable for beginners, the site offers a relaxed experience with depths ranging from the shallows down to 16 metres. Currents are generally mild, though visibility can vary. Divers should exercise caution during shore entry and exit to avoid contact with sharp coral and rocks on the seabed. Carrying a torch is recommended to explore the cave sections effectively. As facilities are not confirmed, divers should arrive self-sufficient with all necessary equipment.

Nebukawa is a shore-accessible dive site on the Izu Peninsula featuring a wreck and artificial reef structure. The site ranges from 2 to 12 metres in depth, with an average of 10 metres, making it suitable for beginner divers. Visibility typically spans 5 to 10 metres. Divers should be prepared for moderate to strong currents and exercise caution during shore entry due to potential surf and shore break conditions. The habitat supports a variety of temperate marine life, including reef fish and invertebrates common to the region. Facilities available on-site include air fills, equipment rental, showers, and changing rooms.

Izusan is a reef site located off the Izu Peninsula, reaching depths of up to 17 metres. The topography consists of a reef structure that supports a variety of marine life, including frogfish, cocklefish, longnose hawkfish, and nudibranchs. Divers may also encounter bullhead wrasse, snapper, and seasonal migratory fish such as yellowtail. Access to this site is by boat only. Conditions are variable, with currents that can change without warning, and boat traffic is a constant hazard. Due to these factors, it is recommended that beginners dive with a local guide to navigate the site safely and maintain proper buoyancy during ascents.

Chinese Wreck is a boat-accessed dive site located off the Izu Peninsula. The wreck lies at depths between 25 and 35 metres, with an average depth of 30 metres. Due to the depth and the nature of the wreck, this site is suitable for advanced divers only. Divers should be prepared for moderate currents and surge, with visibility typically ranging from 5 to 10 metres. Hazards at this site include the deep profile, potential for entanglement, nitrogen narcosis, and the risks associated with an overhead environment. Guided tours and boat charters are available to facilitate access to this site.

The Atami Wreck is an artificial reef located 400 metres offshore on the Izu Peninsula. Resting at depths between 18 and 35 metres, this site is suited for intermediate divers. Access is by boat only, and divers should be prepared for variable visibility ranging from 5 to 40 metres. Currents are typically mild, though stronger surges can occur. The wreck structure presents an overhead environment, requiring caution to avoid entanglement. Water temperatures fluctuate between 17C and 25C, with a summer thermocline and potential winter lows of 10C. Divers should remain vigilant for boat traffic when surfacing.

Bitagane is a reef dive on the Izu Peninsula that extends from the surface to a depth of 24 metres. This site is strictly for advanced divers due to strong currents and the presence of sharp coral. Visibility typically ranges between 10 and 20 metres. Divers must use boat access, and precise buoyancy control is essential to navigate the reef structure safely. Species recorded around this area include wrasses, pufferfish, scorpionfish, reef squid, and various shrimp and snails. Divers should coordinate with boat operators to time descents with slack or early flood currents to manage the challenging water movement effectively.

Ishibashi is a shore-entry reef site located on the Izu Peninsula. The reef topography extends from the surface to a maximum depth of 20 metres, providing a range of depths suitable for beginners and snorkellers. Conditions are generally manageable with mild currents, though surface conditions can vary. Divers and snorkellers can explore the reef structure, which supports a variety of temperate marine life and invertebrates typical of the region. On-site facilities include parking, air fills, and equipment rental, allowing for convenient access. It is recommended to arrive early to ensure the calmest surface conditions for the shore entry.