Futo Port on the Izu Peninsula offers a diverse underwater environment featuring reef, cave, and artificial reef structures. This shore-entry site is suitable for beginners, with an average depth of 10 metres and a typical dive duration of 50 minutes. Conditions are generally manageable, with mild currents and visibility ranging from 9 to 24 metres. Water temperatures fluctuate between 17C and 27C throughout the year. The site supports night diving and is well-equipped with parking, toilets, showers, and changing rooms. Divers should remain aware of boat traffic in the area.

Izu Oceanic Park is a shore entry site on the Izu Peninsula, characterised by dramatic underwater topography formed by ancient lava flows from Mt. Omuro. The site features a concrete ramp and handrails to assist with entry into the water. Conditions vary, with water temperatures ranging from 17C in the winter months to 28C in August. Due to the nature of the entry and the site environment, it is suited for advanced snorkelers. The site provides a distinct look at the volcanic geology of the region.

Izu Oceanic Park offers a diverse underwater landscape featuring natural reefs, kelp forests, and artificial reef structures. Located on the Izu Peninsula, this site is suited for intermediate divers, with depths ranging from 10 to 30 metres and an average depth of 15 metres. Shore entry requires caution due to potential surge and swell conditions, as well as sharp rocks on the seabed. Visibility typically spans 10 to 25 metres, supported by mild currents. The site is well-equipped with full facilities, including parking, showers, changing rooms, and equipment rental, allowing for a comfortable post-dive experience.

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.

Hokkawa Kajikaki is a marine site off the Izu Peninsula featuring a combination of natural reef and artificial reef structures. The site is suitable for beginner divers, with depths ranging from 12 to 24 metres and an average depth of 15 metres. Divers encounter mild currents throughout the area. Access to this site is by boat only. The habitat supports a variety of reef fish and invertebrates typical of the region. Water temperatures fluctuate between 17 and 25 degrees Celsius, requiring divers to select appropriate thermal protection based on the time of year.

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.

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 Beach on the Izu Peninsula offers a combination of natural and artificial reef structures suitable for beginner divers. The site features depths ranging from 1 to 25 metres, with an average depth of 7 metres. Divers can expect mild currents and visibility between 5 and 15 metres. Shore entry is standard, though divers should remain vigilant for boat traffic near the surface and use a surface marker buoy. Protective footwear is recommended to navigate sharp coral and rocks. Facilities including parking, toilets, and a rinse station are available on site. Night diving is permitted, providing additional opportunities to explore the reef environment.