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.

Shobusawa Beach is a shore-accessible site on the Izu Peninsula featuring both reef and wreck topography. The reef starts in shallow water and extends to a maximum depth of 24 metres, with an average depth of 10 metres. Conditions are generally mild, with currents remaining light and visibility ranging from 5 to 25 metres. The site is suitable for beginners and supports night diving. Water temperatures fluctuate between 18C and 26C, necessitating appropriate thermal protection, particularly during winter and spring months. On-site facilities include a dive shop, air fills, showers, changing rooms, and a rinse station.

Kujuppama Beach on the Izu Peninsula is a small cove featuring a white sand bottom and rocky outcrops. Snorkelling is best concentrated around the rocky formations located at the northern end of the beach. The site is suitable for beginners and offers shore access. Water temperatures fluctuate between 18C and 28C depending on the month. Facilities available at the site include parking, toilets, showers, changing rooms, and a rinse station. Equipment rental is also provided for visitors. Divers and snorkellers should remain aware of the presence of jellyfish in the area, and currents are generally mild.

Ebisu Island is a small island connected to the Susaki Peninsula by a bridge, offering accessible shore-entry snorkelling. The site features shallow tide pools and channels, making it suitable for beginners. Depths range from 1 to 8 metres with an average of 4 metres. Conditions are generally mild with visibility varying between 5 and 15 metres. Water temperatures fluctuate throughout the year, ranging from 18C in the winter months to 28C in late summer. Parking is available for visitors. The site is well-regarded for snorkelling, with typical sessions lasting up to 120 minutes.

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.

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.

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.

Futo Yokobama is a shore-entry dive site on the Izu Peninsula featuring a combination of reef and cave topography. Divers can explore depths ranging from 6 to 30 metres with visibility typically between 9 and 15 metres. The site experiences mild currents, making it suitable for beginners. The underwater environment supports a variety of reef fish and invertebrates typical of the region. On-site facilities include parking, toilets, showers, changing rooms, and a rinse station. Divers must remain vigilant regarding boat traffic, as vessels frequently pass through the immediate area during shore entries and exits.