Volcanic shore dives, seasonal offshore encounters and hot-spring towns, planned one coast at a time.
Overview
Izu is a land-based diving region with several distinct travel circuits. Choose Ito for the east-coast shore sites, Numazu as a gateway to the northwest bays, or Shimoda for the south and specialist Mikomoto day boats. Rocky reefs, macro life, managed training beaches, wreck exteriors and overhead terrain demand different plans. Autumn is a strong starting point for scuba; summer better matches many snorkeling programs. Dedicated freedive courses exist, but open-access deep training was not verified. Non-divers can combine coastal walks, historic Shimoda and onsen towns. Keep spare time for weather and transfers, and confirm the exact site, guide and activity permission before paying. Regional diving overview.
The east-coast railway, northwest road approaches and southern boat departures reward separate planning. A two-base trip is usually more practical than daily cross-peninsula transfers. Sources: National Parks of Japan: peninsula access.
Quick shortlist before you jump into the full planning page.
Top species linked to approved dive spots in Izu Peninsula.
Managed shore facilities support a land-based dive break. Confirm the permitted activity, exit time, equipment and guiding arrangements for the selected center. Sources: Koganezaki Dive Center: beach facilities and arrival; COCOMO Osezaki: 2026-27 diving calendar.
A macro-focused beach day, a deep wreck exterior and Mikomoto drift dives are separate products. Pick the experience that matches your current skills and leave room for a substitute. Sources: Diving Service Atami: wreck guide; Mikomoto Hammers: diving FAQ.
Jogasaki walks, Shuzenji and Shimoda offer useful half-day plans for a non-diving companion or a weather contingency. Sources: JNTO: Jogasaki Coast; JNTO: Shuzenji Onsen; JNTO: Shimoda.
8 linked spots
