We track 24 dive operators in Greifensee & Pfäffikersee. 7 teach certification courses (5 PADI, 4 SSI). 2 run snorkelling trips. The biggest cluster is around Steckborn, with 3. Listings are ordered by Fin Rank: a published score for how complete and verified each listing is.
The 8 highest-ranked of 24. How Fin Rank works
| Rank | Operator | TripAdvisor | Discovery dive | Agencies | Website | |
|---|---|---|---|---|---|---|
| 1 | Dugong Dive Center | 4.8(32) | none | none | PADI · SSI | Visit |
Which centres run each site, named on their own websites or confirmed by the owner.
Fin lists 24 dive operators in Greifensee & Pfäffikersee, with the biggest cluster around Steckborn. 7 of them run certification courses.
PADI is the most common agency (5 centres), followed by SSI (4). SDI/TDI also appear.
2 of the 24 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.
Dugong Dive Center is a sporting goods store in Schaffhausen, Switzerland, that also functions as a dive center. It has a 4.8-star rating from 32 reviews and offers wheelchair-accessible parking and entrance. They are open on Thursdays, Fridays, and Saturdays.
Divecorner is a dive center based in Winterthur that offers various diving courses ranging from beginner to technical levels. They provide equipment rental, organize group dives, and conduct training in local waters and swimming pools.

dive.steha.ch - Die Tauchschule am Bodensee is a dive school located in Romanshorn, Switzerland, on the shores of Lake Constance. They offer a variety of diving courses, equipment sales, and guided dives, with a focus on training and exploration in the lake. The school also provides air fills and equipment rental.
TC-Rheindive.ch is a diving club based in Eschenz that organizes diving activities in the Rhine, Untersee, and Bodensee regions. The club offers various training courses for beginners and advanced divers, as well as equipment rental and air fills.
Sidemount-Kurse.com is a specialized training provider for sidemount diving courses, located in Weinfelden, Switzerland. They offer in-depth training for divers looking to gain certification and experience in sidemount configurations. The website focuses exclusively on sidemount diving education.

freedive-thurgau.ch is a center focused on freediving education and training in Felben-Wellhausen, Switzerland. They offer freediving courses and workshops, emphasizing safety and proper techniques. The center aims to promote freediving as a sport and recreational activity.
Pro marine is a dive school and shop located in Gottmadingen near Lake Constance. They offer a range of PADI courses from beginner to professional levels, as well as guided dives and equipment maintenance services.
tauchtreff-bodensee is a sporting goods store in Berlingen, Switzerland, that also appears to function as a dive center, with a 5-star rating from 22 reviews. They are open on Thursdays, Fridays, and Saturdays. Wheelchair-accessible parking is available.
mydive GmbH is a dive school, dive shop, and dive event organizer located in Steckborn, Switzerland. They have a 5-star rating from 20 reviews and offer wheelchair-accessible parking and entrance. Their business hours are limited, with operations only on Wednesdays and Fridays in the afternoon.
Technical Underwater Support is a company based in Kesswil, Switzerland, that provides technical diving services and training. They focus on advanced diving techniques, equipment, and support for complex underwater operations. The company offers specialized courses and equipment solutions for technical divers.
| 2 | Divecorner | 5.0(3) | none | $106 | SSI · PADI | Visit |
| 3 | 5.0(5) | none | none | PADI · SSI | Visit |
| 4 | TC-Rheindive.ch | 4.8(8) | none | none | none | Visit |
| 5 | Sidemount-Kurse.com | 5.0(51) | none | none | SDI/TDI | Visit |
| 6 | 5.0(21) | none | none | none | Visit |
| 7 | Pro Marine GmbH | none | none | none | PADI | Visit |
| 8 | tauchtreff-bodensee | 5.0(28) | none | none | none | Visit |

