Usami Manbo Point is a reef site located off the Izu Peninsula, Japan. The site extends from the surface to a maximum depth of 19 metres, making it suitable for beginner divers. Access is exclusively by boat, and divers should be aware of variable currents throughout the area. Due to the presence of boat traffic, it is essential to use a safety sausage when surfacing and remain close to your guide during ascent. Guided tours, air fills, and equipment rental are available locally to assist with navigation and safety. Conditions can vary, so checking current patterns with a local guide before entry is recommended.

Usami Kagone features a combination of natural reef and artificial structures located 100 metres from the shore. Divers and snorkellers can explore depths ranging from 10 to 18 metres, with an average depth of 15 metres. The site is suitable for beginners, offering manageable conditions with mild currents and visibility between 5 and 15 metres. Boat access is required to reach the site. Facilities including air fills and equipment rental are available nearby, allowing for convenient preparation before departure. Water temperatures fluctuate throughout the year, ranging from 17C in winter to 26C in September, necessitating appropriate thermal protection during cooler months.

Hatsushima Island (Futatsune) is a shore-entry site located on the only inhabited island in Shizuoka, accessible via ferry from Atami. The topography features a gentle slope transitioning into a combination of natural reef and artificial reef structures. Depths range from 2 to 18 metres, with an average depth of 10 metres, making it suitable for beginners. Divers and snorkellers can expect mild currents and visibility between 12 and 15 metres. Facilities at the site include a dive shop, equipment rental, guided tours, parking, showers, toilets, and a cafe. Typical dives last approximately 45 minutes. Be aware of sea urchins and sharp coral present in the area.

Kawana Beach on the Izu Peninsula offers a accessible shore entry featuring a gentle slope equipped with handrails. This site consists of both natural reef and artificial reef structures, making it suitable for beginners. Divers and snorkellers can expect depths ranging from 5 to 15 metres, with an average depth of 10 metres. Conditions are generally mild with visibility between 5 and 15 metres. The site supports a variety of temperate marine life, including various reef fish and invertebrates typical of the region. Facilities available at the beach include toilets, showers, changing rooms, and parking.

Sodaine is a boat-access site located 1000 metres offshore, featuring a combination of a pinnacle, reef, and wall. Divers can explore depths ranging from 15 to 26 metres, with an average depth of 14 metres. The site experiences moderate currents and visibility typically between 10 and 25 metres. Marine life includes crocodile fish resting on the substrate, red spotted lobster within wall crevices, and wrasse and snapper in the mid-water. Japanese snow fish and soft gingerbread hem stars are also present on the reef surface. Guided tours and air fills are available for this 30-minute dive, which is suitable for beginners.

Atami Kosoga Cave is a shallow marine cave located off the Izu Peninsula, Japan. The site is suitable for beginner divers, with depths reaching a maximum of 10 metres. Access is strictly by boat, and divers should remain aware of boat traffic when surfacing. Conditions are generally manageable due to mild currents, though visibility within the cave can be variable. Divers are advised to carry a torch to navigate the cave structure safely. As there are no permanent facilities on-site, check for local availability before planning a trip. Exercise caution to avoid contact with the cave walls and floor while exploring this shallow environment.

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.

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.