We track 22 dive operators in North Brittany & Emerald Coast. 12 teach certification courses (10 PADI, 4 SSI). 6 run snorkelling trips. The biggest cluster is around Saint-Malo, with 4. Listings are ordered by Fin Rank: a published score for how complete and verified each listing is.
The 8 highest-ranked of 22. How Fin Rank works
| Rank | Operator | TripAdvisor | Discovery dive | Agencies | Website | |
|---|---|---|---|---|---|---|
| 1 | Saint Malo Emerald Diving | 4.7(193) | none | $92 | CMAS | Visit |
Which centres run each site, named on their own websites or confirmed by the owner.

Fin lists 22 dive operators in North Brittany & Emerald Coast, with the biggest cluster around Saint-Malo. 12 of them run certification courses.
PADI is the most common agency (10 centres), followed by SSI (4). CMAS also appear.
6 of the 22 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.
Saint Malo Emerald Diving is a sports club located in Saint-Malo, France. It has a high rating based on numerous reviews and offers wheelchair accessible facilities. The club operates on weekdays with specific morning and afternoon hours.
Nautilus Dive Center is a diving school and center located in La Richardais, France. They offer diving courses and activities.

Comarin is a dive center located in Saint-Malo, France. They offer diving services.

Ren'sports is a dive shop and training center located in Rennes, France. They offer diving courses, equipment sales, and diving trips.
Histoire d'Eau is a dive center located in Erquy, France. They offer diving activities and training.
Bretagne Passion Sous-Marine is a dive center located in Chantepie, France. They offer various diving activities and services.
Saint-Brieuc Plongée is a dive center located in Langueux, France. They offer a range of diving activities and courses.
Club Subaquatique Côte Emeraude is a sports club situated in Saint-Malo, France, with a very high rating from a smaller number of reviews. It is operational and provides wheelchair accessible parking and entrance. The club has limited operating hours, primarily on Friday evenings.
Armor Plongée is a sports club located in Saint-Quay-Portrieux, France, with a high rating from numerous reviews. It offers wheelchair accessible parking and entrance, and operates seven days a week.
Diving Chausey Loisir is a dive center located in Granville, France, offering diving excursions and training. They operate in the Chausey Islands area.
| 2 | Nautilus Dive Center | 4.2(78) | none | none | PADI | Visit |
| 3 | 4.8(131) | none | none | PADI | Visit |
| 4 | 4.8(64) | none | none | PADI · SSI | Visit |
| 5 | Histoire d'Eau | 5.0(308) | 4.7 | none | PADI | Visit |
| 6 | Bretagne Passion Sous-Marine | 5.0(109) | none | none | PADI · SSI | Visit |
| 7 | Saint-Brieuc Plongée | 4.7(69) | none | none | PADI · SSI | Visit |
| 8 | Club Subaquatique Côte Emeraude | 4.9(11) | none | none | none | Visit |
