Explore Izu Peninsula

The Izu Peninsula, nestled in Japan's coastal beauty, offers a diving experience like no other. This region, known for its stunning high mountains and ancient volcanic landscapes, extends its unique terrain beneath the waves. Divers here can explore fascinating underwater environments shaped by past lava flows, encountering rocky and sandy areas adorned with vibrant hard and soft corals. These diverse landscapes are home to a wide variety of marine life, offering glimpses of colorful fish, playful sea turtles, and the occasional encounter with graceful rays.

One of the peninsula's standout features is its array of diving opportunities, from shore dives and boat trips to adventurous liveaboards. The dive sites are meticulously regulated, ensuring sustainable exploration and the preservation of their natural beauty. With authorized dive service providers, divers can experience the thrill of caves and wrecks, adding an adventurous edge to their underwater journey. Seasonal variations bring different marine spectacles, making each dive a fresh and exciting experience. The Izu Peninsula's commitment to conservation and its unique geological history make it a truly special dive destination in Japan.

Upcoming Events

Diver Level Programs / Courses

ダイビングサービス熱海

Dry Suit Diving

15 Nov 2025

Drysuit diving opens up a world of opportunities, including diving remote Arctic destinations and exploring cold-water dive sites teeming with life. Dry suit diving also keeps you warm on multi-dive days when you do not want to spend your time getting in and out of a cold wetsuit. The SSI Dry Suit Diving specialty program is the best way to become a dry suit diver and teaches you all the knowledge and techniques you need to dive safely and comfortably in a dry suit. You will learn how to use specialized equipment, like dry suits and BCs, the benefits of dry suits and how to deal with dry suit emergencies – which are unique to this type of diving. Upon completion, you will earn the SSI Dry Suit Diving specialty certification.

Diver Level Programs / Courses

オハナ　ウィズ

Open Water Diver

22 Nov 2025 + 2 more

This globally recognized certification program is the best way to begin your lifelong adventures as a certified scuba diver. Personalized training is combined with in-water practice sessions to ensure you have the skills and experience required to become truly comfortable underwater. You will earn the SSI Open Water Diver certification.

Diver Level Programs / Courses

Diving Service mieux

Advanced Open Water Diver

27 Dec 2025

If you cannot decide which specialty programs are the best choice for you, join the SSI Advanced Open Water Diver program! You will try Deep Diving and Navigation plus a variety of 3 more specialty areas of choice before committing to full specialty training. It is a great way to experience what advanced diver training is all about and how valuable it can be to your diving adventures. During the Advanced Open Water Diver Program, you will experience 5 different specialties by completing one open water training dive per specialty after a comprehensive briefing with your SSI Instructor. By taking this program you will have total freedom to explore. You can complete the full Specialty trainings any time in the future and credit your Advanced Open Water Diver training towards them.

Diver Level Programs / Courses

Diving Service mieux

Open Water Diver

10 Jan 2026 + 4 more

This globally recognized certification program is the best way to begin your lifelong adventures as a certified scuba diver. Personalized training is combined with in-water practice sessions to ensure you have the skills and experience required to become truly comfortable underwater. You will earn the SSI Open Water Diver certification.

Diver Level Programs / Courses

DiveNetworks

Open Water Diver

15 Jan 2026

This globally recognized certification program is the best way to begin your lifelong adventures as a certified scuba diver. Personalized training is combined with in-water practice sessions to ensure you have the skills and experience required to become truly comfortable underwater. You will earn the SSI Open Water Diver certification.

Diver Level Programs / Courses

DiveNetworks

Advanced Adventurer

17 Jan 2026

If you cannot decide which specialty programs are the best choice for you, join the SSI Advanced Adventurer program! With this program, you can try a variety of specialties before committing to full specialty programs. It is a great way to experience what advanced diver training is all about and how valuable it can be to your diving adventures. During the Advanced Adventurer Program, you will try out 5 different specialties. You will complete one open water training dive per specialty after a comprehensive briefing with your SSI Instructor. With this trial program in specialty diving, you will have total freedom to explore. You can complete the full specialty programs any time in the future and credit your Advanced Adventurer training towards them.

Top Dive Sites Map

★★★★☆ Koganezaki

Located in Koganezaki Park, you can enjoy various flowers depending on the season, and entry/exit is very easy to do due to the ramps and handrails. When you enter, you’ll see a wide range of gorotas up to a few meters deep, and beyond that, you’ll see an entire surface of the sand.

2,120
Logs
446
Divers
14.0 m
⌀ Depth
10.0 m
⌀ Visibility

★★★★☆ Tago

There are six boat points in the open sea and four in the bay at Tago. There is also one beach. At the point in the bay, there is a clump of Green Turtle Coral that looks like Okinawa, and much tropical small fish can be seen around it.

824
Logs
205
Divers
22.0 m
⌀ Depth
12.0 m
⌀ Visibility

★★★★☆ Izu Oceanic Park

Izu Oceanic Park is the most popular dive site in Higashi-Izu. The facilities are good and there is a pool. In the summer, the area is crowded with beachgoers and ordinary people who use the pool.

1,199
Logs
306
Divers
22.0 m
⌀ Depth
12.0 m
⌀ Visibility

★★★★☆ Atami

This is a historic dive site that represents Higashi-Izu. It can be accessed from the Tokyo area in about 2 hours, and it is also possible to take a day trip, making it a popular spot, especially among Kanto divers.

878
Logs
202
Divers
21.0 m
⌀ Depth
10.0 m
⌀ Visibility

★★★★☆ Futou

Futou is the scenic point of Nishi-Izu. This site can be reach via beach entry or boat entry. There is a small area where you can go night diving all year round. There are caves, caverns, and arches as you progress through the shallow beach sand to the rocky terrain.

225
Logs
103
Divers
13.0 m
⌀ Depth
8.0 m
⌀ Visibility

★★★★☆ Osezaki Beach

Osezaki is one of the most famous dives sites in Japan. It is a cape that juts out into Suruga Bay and done as a beach dive. There are two dive options, one on the bayside of the cape and the other on the open seaside, both of which are shallow rocky areas when you descend and sandy areas when you go offshore.

2,634
Logs
368
Divers
19.0 m
⌀ Depth
9.0 m
⌀ Visibility

★★★★☆ Futo Yokobama

A popular spot representing East Izu, close to the IOP. There are two main beach points and a lot of boat diving. There are ramps and handrails on the beach for easy entry/exit. The sea conditions are often calm and can be enjoyed by beginners.

946
Logs
187
Divers
16.0 m
⌀ Depth
12.0 m
⌀ Visibility

★★★★☆ Ita

Ida in Numazu City, Shizuoka, is a top beach dive site in Nishi Izu, famed for its clear “Ida Blue“ waters. Its gentle rocky slope suits all levels, with rich marine life and good tidal flow. Ideal for both macro and wide-angle photography, it’s a favorite among divers year-round.

608
Logs
152
Divers
21.0 m
⌀ Depth
12.0 m
⌀ Visibility

★★★★☆ Hatsushima Island

It is the only inhabited remote island in Shizuoka Prefecture, about 10 km off the coast of Atami, which can be reached in 30 minutes by ferry. After crossing the island, you can go beach diving or boat diving.

532
Logs
153
Divers
20.0 m
⌀ Depth
11.0 m
⌀ Visibility

★★★★☆ Budaine

There are a number of diving spots around Kamikimoto Island, an uninhabited island off the coast of Shimoda. It is a 20-minute boat ride from the harbor to the dive site. It is a popular spot for hammerhead sharks to appear from summer to autumn when the Kuroshio Current approaches the Izu Peninsula.

705
Logs
193
Divers
24.0 m
⌀ Depth
12.0 m
⌀ Visibility

★★★★☆ Kumomi Ushitsuki Rock

This is the most popular cave diving spot in Izu. There are many caves and covern between and around two large rocks called Ushitsukiiwa in front of the harbor.

776
Logs
207
Divers
19.0 m
⌀ Depth
11.0 m
⌀ Visibility

★★★★☆ Toujima

Nakagi is located in the southernmost in the Izu Peninsula. This area benefits from Black Stream and shows various scenes underwater as the seasons change. The scenery created by nature over the centuries will attract divers both of land and underwater.

283
Logs
62
Divers
23.0 m
⌀ Depth
13.0 m
⌀ Visibility

★★★★☆ Atami Kosoga Cave

Kosoga Cave in Atami, Shizuoka, is open Nov–Apr and features a 40m semi-enclosed cave at 6–12m depth, ideal for beginners. Its wide space and open ceiling let sunlight create a stunning blue gradation. Just 10 minutes by boat from Atami Port, it’s both scenic and accessible.

228
Logs
60
Divers
10.0 m
⌀ Depth
14.0 m
⌀ Visibility

★★★★☆ Bitagane

Located near Atami’s wreck, this dive site has fixed buoys with depths from 18-20m below the buoy. West side (No.1 root) stays ~20m deep; east side (No.2 root) deepens to 30m. Strong currents, rich fish schools, and varied terrain make it popular.

325
Logs
80
Divers
24.0 m
⌀ Depth
12.0 m
⌀ Visibility

★★★★☆ Atami Wreck

The Asahi 16, a gravel transport ship, rests split in half underwater, a notable shipwreck in Japan. Its large hull emerges unexpectedly in sandy surroundings, becoming a thriving fish habitat. Near the bow, a winch attracts colorful fish, while descent ropes at both ends offer unique wreck diving experiences.

723
Logs
139
Divers
28.0 m
⌀ Depth
12.0 m
⌀ Visibility

Diving in Izu Peninsula

The Izu Peninsula, located southwest of Tokyo, is a premier diving destination known for its stunning underwater landscapes and diverse marine life. One of the top dive sites is Osezaki, a popular shore dive spot offering easy access for divers of all levels. The area is famed for its vibrant coral gardens and the chance to spot species like the Japanese pygmy seahorse. Another notable site is the wreck of the "Atarashiki" near Futo, providing an exciting exploration experience for more advanced divers. For those interested in unique underwater experiences, night dives in Izu Peninsula reveal bioluminescent creatures and the mesmerizing behavior of nocturnal marine life. The balance between shore diving and liveaboard options allows divers to enjoy both convenient day trips and extended excursions to more remote sites. Whether you're a beginner or an experienced diver, Izu Peninsula's variety of dive spots promises an unforgettable underwater adventure.

The best Months to dive in Izu Peninsula

The Izu Peninsula offers year-round diving opportunities with varying conditions throughout the seasons. In spring, water temperatures range from 15°C–20°C/59°F–68°F, transitioning to 20°C–26°C/68°F–79°F in summer, optimal for warmer dives. Visibility generally ranges from 10 to 20 meters/33 to 66 feet, with autumn often providing the clearest conditions due to stable weather.

While diving is possible all year, winter months bring cooler waters at 14°C–17°C/57°F–63°F, which may require thicker wetsuits. Wind and currents are factors to consider, especially in spring, as strong winds can affect surface conditions and currents may be stronger. Overall, the Izu Peninsula remains a favorable diving location, though late winter and early spring may pose less ideal conditions for some divers.

Statistics

Historical data and trends

Dive Activity & Environmental Conditions

Centers Map

isLIFE DIVING

川奈1290-97, 4140044 Ito, Shizuoka - JPN

オハナ　ウィズ

庄栄町10-5, 4100047 Numazu, Shizuoka - JPN

Divingshop Quartret

静岡県伊東市岡16-3, 4140055 Ito, Shizuoka - JPN

ダイブヒーリング

伊東市八幡野1186-38-1F, 4130232 ITO, Shizuoka - JPN

ITA DIVING CENTER

静岡県沼津市井田207, 4103401 Numazu, Shizuoka - JPN

Diving Service Kawanabiyori

静岡県伊東市川奈673-5, 4140044 Ito, Shizuoka - JPN

Toi Diving Service

土肥2915-1, 410-3302 Izu, Shizuoka - JPN

ＳＨＡＲＫ　ＥＹＥ

伊東市十足620-50, 4140052 Ito, Shizuoka - JPN

DiveNetworks

内浦三津122-58, 4100223 沼津市, Shizuoka - JPN

城ヶ崎インディーズ

伊東市富戸796-2, 4130231 Ito, Shizuoka - JPN

獅子浜ダイビングサービス

1-17 Shishihama, Numazu City, 4100104 Numazu, Shizuoka - JPN

赤沢ダイビングセンター

赤沢1-2, 4130233 ITO, Shizuoka - JPN

ダイビングサービス熱海

静岡県熱海市和田浜南町9-24, 413-0023 Atami-shi, Shizuoka - JPN

ワイラニ スキューバダイビングショップ

静岡県伊東市富戸1273-59, 413-0231 Ito, Shizuoka - JPN

ダイビングスクール ジェイズヘブン

静岡県伊東市富戸140-1, 413-0231 Ito-shi, Shizuoka - JPN

Diving Service mieux

FUTO577-1, 4130231 ITO, Shizuoka - JPN

IZUMI DIVING RESORT

静岡県伊東市富戸354-1, 4130231 Ito, Shizuoka - JPN

SUN La IZU DIVING

静岡県伊東市川奈286-1, 4140044 Ito, Shizuoka - JPN