Baia De Urzelina on Sao Jorge is a marine site featuring a combination of reef, cave, and cavern topography. Divers can expect depths ranging from 8 to 14 metres, with an average depth of 10 metres. The site is accessible via a shore entry and is suitable for beginners due to the mild currents. Night diving is permitted at this location. Water temperatures fluctuate throughout the year, ranging from 16C in the cooler months to 23C during the summer. Divers should be aware of sharp coral present in the area.

Baixa da Serreta is a drift reef located off the coast of Terceira, Azores. This site is suited for intermediate divers comfortable managing strong currents and deep water. The topography consists of a reef structure with depths ranging from 25 to 35 metres, averaging 30 metres. Visibility is consistently around 30 metres. Access is exclusively by boat, and divers must plan for boat support throughout the dive. Water temperatures fluctuate between 16C and 21C depending on the time of year, requiring appropriate thermal protection. Due to the depth and potential for significant surge and current, divers should monitor their profile closely and coordinate entry points with their skipper.

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.

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.

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.

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.

The Lidador is a deliberately sunk wreck located 50 metres from the shore of Terceira, Azores. Resting at depths between 8 and 11 metres, the site functions as an artificial reef suitable for beginners and those building confidence. Divers and snorkellers can access the wreck from the shore or by boat. While currents are generally mild, the site is subject to surf and potential surges, requiring careful planning for entry and exit. The wreck is accessible year-round and is a popular location for night dives. Always remain aware of local boat traffic when near the surface and check current conditions before entering the water.

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.