We track 11 dive operators in Terceira & Graciosa. 3 teach certification courses (4 PADI). 6 run snorkelling trips. The biggest cluster is around Angra do Heroismo, with 4. Listings are ordered by Fin Rank: a published score for how complete and verified each listing is.

Deep Blue Azores is a dive center located in Angra do Heroísmo, Azores, offering a variety of diving and snorkeling experiences. They provide guided dives, PADI courses, and equipment rental, catering to both beginners and experienced divers.
Scubazores divers - dive center is a diving facility in Angra do Heroísmo, Azores. They offer diving courses, guided dives, and equipment rental, with a focus on exploring the underwater world of the Azores.
Octopus Diving Center is a dive center located in Praia da Vitória, Terceira Island, Azores. They offer a range of diving services, including PADI courses, guided dives, and equipment rental, to explore the underwater attractions of the island.
TERCEIRA ADVENTURES is a company offering adventure tours in Terceira Island, Azores, including diving and snorkeling. They are located in Angra do Heroísmo and aim to provide exciting experiences in the natural environment.

Deep Blue Diving Center is a PADI 5 Star IDC Dive Center located in Porto Pim, Faial Island, Azores. They offer a range of services including PADI courses, guided dives, and equipment rental. The center is known for its experienced instructors and its location in a marine reserve.

Qmann Diving dive center Azores is a sports activity location in Biscoitos, Terceira, Azores. They are operational and have a high rating from customer reviews. The center accepts debit card payments.
DivinGraciosa is a sports activity location situated in Santa Cruz da Graciosa, Azores. It is operational and has received positive reviews. The center accepts credit card and cash payments.
The 8 highest-ranked of 11. How Fin Rank works
Which centres run each site, named on their own websites or confirmed by the owner.
Fin lists 11 dive operators in Terceira & Graciosa, with the biggest cluster around Angra do Heroismo. 3 of them run certification courses.
PADI is the most common agency (4 centres).
6 of the 11 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 | Scubazores Divers | 4.8(78) | none | none | PADI | Visit |
| 3 | Octopus Diving Center | 4.8(55) | none | none | PADI | Visit |
| 4 | Terceira Adventures | 4.9(112) | none | none | none | Visit |
| 5 | 4.9(105) | 5.0 | $81 | PADI | Visit |
| 6 | 4.8(59) | none | none | none | Visit |
| 7 | DivinGraciosa | 4.6(55) | none | none | none | Visit |
| 8 | Scubazores Divers (Marina Store) | 4.8(18) | none | none | none | Visit |
