About Chiba Ito

Destination: Tateyama, Chiba

Dive Site: Ito

Overview: Renowned worldwide for its electrifying "Shark Scramble," Ito delivers one of the most intense, high-octane big-animal encounters on the planet. Anchored around a prominent underwater pinnacle (bommie) swept by moderate-to-strong currents, divers descend into a swirling vortex of hundreds of schooling banded houndsharks, squadrons of massive red stingrays, and inquisitive resident Kobudai. Offering a dynamic topography of rocky ledges and sandy channels, Ito provides an adrenaline-charged, photo-worthy spectacle that is truly unique to Japan.

How to get there

Highway buses:

From Tokyo Station Yaesu South gate JR Kanto Bus terminal, take the Nanohana 1 Gou Bus at 06:20 AM. The route follows the Minami-Bōsō Main Line, stopping at the Ito Gyokou stop, a 2-minute walk from Bommie. The journey takes 2 hours and costs ¥2,000 to ¥3,000. Reservations are recommended.

Diving shop

Diving with Bommie

Chiba Ito Bommie offers a thrilling 100% encounter with over 200 endemic Japanese hound sharks. These sharks are not nurse sharks but proper sharks with teeth. To participate, you need at least 30 tank dive experiences, as you may encounter very strong currents. Be prepared to handle yourself against the current. Diving time is limited to 40 minutes, including safety stops. Stay close to the guide, and ensure you have a dive computer and emergency float. Divers set up tanks independently. Rentals are limited, so please request in advance or bring your own gear.

As the diving location is in a remote area, bring your own lunch or dine at the nearby seafood restaurant "Daibo" (closed on Tuesdays), located next to the dive shop.

Free Pick-Up & Drop-Off Service

Select Tateyama Resort Hotel for free pick-up and drop-off hotel service to the dive site.

Taxis are limited and cannot be pre-booked, so avoid booking hotels far from the dive shop.