We track 7 dive operators in Osezaki & Nishi-Izu. 4 teach certification courses (2 SSI, 2 PADI). 4 run snorkelling trips. 1 offer accommodation alongside diving. Listings are ordered by Fin Rank: a published score for how complete and verified each listing is.
井田ダイビングセンターは静岡県沼津市に位置し、初心者からフォト派まで幅広いダイバーをサポートする施設です。富士山を望むロケーションで、ファンダイビングやライセンス講習、体験ダイビングを提供しています。
Hirasawa Marine Center is a diving facility located in Nishi-Izu, Numazu City, facing the waters of Okusuruga Bay. The center provides beach and boat diving, equipment rentals, and facilities for scuba divers and snorkelers. It is an SSI-certified training center with staff instructors on-site.

Shishihama Diving Service is a sports activity location in Numazu, Japan, with an address at 1-17 Shishihama. It is operational and has a rating of 4.4 stars based on 98 reviews. The service is open daily from 8:00 AM to 5:00 PM.
Hirasawa Marin Center is a sports activity location in Numazu, Japan. It is operational and has a rating of 4.4 stars based on 141 reviews. The center is open daily from 8:00 AM to 5:00 PM.
The 7 highest-ranked of 7. How Fin Rank works
| Rank | Operator | TripAdvisor | Try dive | Agencies | Website | |
|---|---|---|---|---|---|---|
| 1 | 井田ダイビングセンター | 4.5(92) | none | $80 | SSI | Visit |
Which centres run each site, named on their own websites or confirmed by the owner.
Fin lists 7 dive operators in Osezaki & Nishi-Izu. 4 of them run certification courses.
SSI is the most common agency (2 centres), followed by PADI (2).
1 operator in Osezaki & Nishi-Izu offers accommodation alongside diving.
4 of the 7 operators we track run snorkelling tours.
Operators are sorted by Fin Rank, a 100-point profile strength score: contact details, what they offer, the dive sites they run, their Google reputation, whether the owner has claimed the listing, and whether their own website links to Fin. 0 listings here are owner-verified. The formula is published in full on the Fin Rank page.
| 2 | 平沢マリンセンター | 4.4(142) | none | none | SSI | Visit |
| 3 | 4.4(98) | none | none | PADI | Visit |
| 4 | COCOMO OSEZAKI | 4.7(59) | none | none | none | Visit |
| 5 | 平沢ダイビングショップ | 4.4(141) | none | none | PADI | none |
| 6 | Nature Inn Osekan | none | none | none | none | none |
| 7 | Osekan Marine Service | none | none | none | none | none |
