The Vapor Lidador is a 78.67-metre British steamboat wreck located 50 metres from the shore of Terceira, Azores. Built in 1873, the vessel served the Portugal-Brazil route before sinking in 1878 after striking a shoal near the fortress of Sao Sebastian. Now part of the Archaeological Subaquatic Park of Angra do Heroismo Bay, the wreck lies at depths between 8 and 11 metres, with an average depth of 8 metres. This site is suitable for beginners and accessible by both boat and shore. Divers can expect mild currents and visibility ranging from 15 to 40 metres. The site is also open for night diving.

Cemiterio das Ancoras, located 200 metres off the coast of Terceira, is a unique site defined by a collection of anchors resting on the seabed. These anchors form an artificial reef that complements the site's natural wall and wreck structures. The topography ranges from 15 to 35 metres in depth, with an average of 18 metres. Divers should expect moderate currents and visibility between 10 and 30 metres. Access is by boat only, and divers must remain vigilant regarding boat traffic overhead. This site is suitable for intermediate divers, and night diving is permitted for those seeking a different perspective of the underwater formations.

Poente is a reef site located 5000 metres off the coast of Terceira, Azores. Designed for intermediate divers, the site features depths ranging from 18 to 22 metres with an average of 20 metres. Divers experience mild currents and visibility between 10 and 30 metres. Access is exclusively by boat, and divers must deploy an SMB before surfacing due to potential boat traffic. The site is suitable for night diving, which can offer different observations along the rocky substrate. Water temperatures fluctuate seasonally between 16 and 23 degrees Celsius. Divers should be aware of sharp coral and maintain direct boat entry and exit procedures to manage the current.

Arraia Reef is a sheltered shore dive located in the Silveira swimming zone, protected from wind and currents by the Monte Brasil volcano. The topography features a shallow rocky bottom that transitions into a sandy area, deepening as divers move away from the bay. With depths ranging from 5 to 15 metres and an average of 14 metres, this site is suitable for beginners. Visibility typically spans 10 to 30 metres, and the site supports night diving. Facilities at the entry point include showers and changing rooms. Divers should be aware of sharp coral present at the site.

Gruta dos Ratoes is a cave and reef site located 926 metres off the coast of Terceira, Azores. Divers typically reach this location by boat for a dive averaging 45 minutes. The site maintains a consistent depth of 24 metres, with visibility ranging from 10 to 30 metres. Conditions are generally manageable with mild currents, making it suitable for beginners. Water temperatures fluctuate between 16 and 22 degrees Celsius throughout the year. Divers should exercise caution regarding hand and foot placement on the reef and cave floor due to the presence of stonefish. Always monitor local weather and water movement before planning a dive.

Nascente is a boat-access reef and wall site located off the coast of Terceira, Azores. The site features a vertical profile ranging from 25 to 40 metres, with an average depth of 30 metres. Divers should be prepared for moderate currents that can shift, requiring advanced certification and careful monitoring of depth and drift. Visibility typically fluctuates between 10 and 30 metres. Water temperatures range from 16C to 21C throughout the year, necessitating appropriate thermal protection. As this is an offshore site located 1000 metres from the coast, all equipment must be carried on the boat. Divers should consult the captain regarding current sea states and surge conditions before entry.

Cinco Ribeiras is a coastal site on the south-western side of Terceira, defined by lava flows that have created distinct lava arches and tubes. The site is home to a notable underwater cave and the remains of the Union, a vessel that sank in 1911; divers can still observe the ship's boiler. With depths ranging from 1 to 16 metres and an average of 12 metres, the site is suitable for beginners. Entry is via the shore, and conditions feature mild currents with visibility between 10 and 30 metres. Night diving is permitted, and typical dives last 45 minutes. Divers should be aware of the overhead environment hazard.

Fradinhos is a technical diving site located off the coast of Terceira, Azores, featuring a combination of natural and artificial reef structures. The site spans a significant depth range from 25 to 60 metres, with an average depth of 24 metres. Divers must be prepared for strong, unpredictable currents and variable visibility between 10 and 30 metres. Due to the challenging conditions, including potential entanglement risks and overhead environments, this site is strictly for advanced and technical divers. Access is exclusively by boat, and divers should coordinate with local operators to time their descent with slack or incoming tides.