Hamayu Beach on the Izu Peninsula is a shore-entry site featuring a mix of reef and seagrass habitats. Divers can explore depths ranging from 3 to 15 metres, with an average depth of 8 metres. The site is suitable for beginners due to mild currents and visibility typically between 10 and 20 metres. The reef and seagrass beds provide a habitat for various marine life, including nudibranchs, cephalopods, and small fish. Water temperatures fluctuate between 17 and 27 degrees Celsius throughout the year. Divers should exercise caution regarding sharp coral and rocks during entry and exit, and remain aware of jellyfish in the water.

Kreisel is a reef and drop-off site located off the Izu Peninsula. The topography features a drop-off reaching a maximum depth of 11 metres, providing a comfortable environment for beginner divers. Access to the site is by boat. Conditions are variable, with visibility ranging from 3 to 25 metres and water temperatures fluctuating between 17 and 27 degrees Celsius. Divers should be prepared for mild currents. The site is well-suited for macro photography, as the reef structure requires slow, close-up observation to identify small subjects. Always check local conditions prior to departure, as visibility can change significantly.

Shark City is a reef site located 500 metres offshore from the Izu Peninsula and Hachijojima, Japan. Divers explore depths ranging from 5 to 17 metres, with an average depth of 10 metres. The site features mild currents and visibility between 5 and 15 metres. Access is strictly by boat, requiring coordination with the local dive shop. The water temperature fluctuates seasonally between 17 and 27 degrees Celsius. The reef environment supports a variety of marine life, including various nudibranchs, cephalopods, rays, and sharks. Due to the presence of sharks and potential currents, advanced certification is recommended for those planning a visit to this location.

Pineapple Rock is a reef site located 500 metres offshore, accessible only by boat. The site features depths ranging from 5 to 18 metres, with an average depth of 10 metres. Divers encounter mild currents and visibility typically between 10 and 25 metres. The reef structure consists of sharp coral and rock, requiring careful placement of hands and fins to avoid injury. Due to active boat traffic in the area, divers must remain close to the descent line during surfacing and use a surface marker buoy. Water temperatures fluctuate significantly throughout the year, ranging from 17 to 27 degrees Celsius, necessitating appropriate exposure protection for the season.

Grott 1 is a cave dive located off the Izu Peninsula and Hachijojima, Japan. The site features a cave system ranging from 3 to 17 metres in depth, with an average depth of 12 metres. Access is by boat only. Conditions are generally manageable with mild currents, though visibility can vary significantly between 5 and 25 metres. Divers should exercise caution in this overhead environment, as visibility inside the cave can drop, making a torch essential. The site is suitable for beginners, though buoyancy control is required to navigate the structures safely. Shore facilities including air fills, showers, and toilets are available at the local dive operator.

Tomo is a shallow reef and artificial reef site located off the Izu Peninsula and Hachijojima, Japan. Reaching depths of up to 10 metres, the site is suitable for beginner divers. Visibility typically ranges from 10 to 30 metres. Access is strictly by boat to avoid hazardous surf and shore breaks near the coast. While currents at depth are generally mild, stronger currents can develop in the area, requiring divers to stay close to their guide. The site is diveable year-round, with water temperatures fluctuating between 17C and 27C depending on the month.

Oike is a shallow shore-entry reef site on the Izu Peninsula, reaching a maximum depth of 6 metres. This site provides a low-pressure environment suitable for beginner divers to build confidence. The area features mild currents, though visibility can be variable. Divers should confirm facility availability with a local operator before arrival, as on-site amenities are not guaranteed. Water temperatures fluctuate between 17 and 28 degrees Celsius throughout the year, requiring appropriate exposure protection based on the season. Given the shallow nature of the reef, it is a suitable location for those looking to practice buoyancy and observe the reef structure at a relaxed pace.

Orange Forest is a reef site located off the Izu Peninsula, extending from the surface to a maximum depth of 19 metres. The site is accessible exclusively by boat and is suitable for beginners, though divers should be prepared for moderate currents throughout the dive. Conditions, including visibility, can vary significantly between dives, so it is essential to confirm current status with your operator before entry. The site contains dangerous marine life, and divers are advised to maintain a safe distance from all creatures encountered. Due to the presence of moderate currents, beginners should remain close to their guide at all times.