Baía da Flandres, located at Berlenga Grande in the Berlengas Archipelago, offers a shallow dive and snorkel experience ranging from 4 to 15 metres. The site features a small wreck and a cavern, accessible only by boat. Divers and snorkellers can encounter common species such as wrasses, flatworms, and Tompot blennies. Less frequently, the site hosts Common octopus, European common cuttlefish, sea stars, and various nudibranchs like Felimare villafranca and Felimare fontandraui. Scorpionfish, squat lobsters, slipper lobsters, and tricolor doris are occasionally recorded. With mild currents and visibility between 10 and 30 metres, this site is suitable for beginners. Water temperatures fluctuate between 15C and 19C throughout the year.

Carreiro dos Cações is a north-facing bay located at Berlenga Grande, featuring a mix of reef and wall topography. The site is suitable for beginners, with depths ranging from 5 to 13 metres and an average of 9 metres. Access is by boat only. Divers can observe common species including wrasses, flatworms, Felimare fontandraui, and Tompot blenny. Less frequently encountered life includes the common octopus, European common cuttlefish, Felimare villafranca, and bream. Rare sightings include gurnard, squat lobster, scorpionfish, barried anemone, tricolor doris, and slipper lobster. Visibility varies between 1 and 10 metres, and water temperatures range from 15C to 19C. Hazards include sea urchins and stonefish.

Vapor do Trigo is a wreck dive located off Berlenga Grande, resting at depths between 27 and 30 metres. This site requires boat access and is suited for intermediate divers due to the moderate to strong currents that can build quickly. Visibility ranges from 5 to 10 metres, requiring careful navigation to explore the structure. Water temperatures fluctuate between 15 and 18 degrees Celsius, making a 5mm wetsuit or drysuit appropriate. Divers should prioritise precise buoyancy control and air management. Shore facilities at the boat departure point in Peniche include parking, toilets, showers, changing rooms, and a rinse station.

Recife dos Galos is a reef and artificial reef site located off Berlenga Grande. Divers can explore depths ranging from 5 to 22 metres, with an average depth of 20 metres. The site is accessible only by boat and is suited for advanced divers due to moderate to strong currents. Marine life includes common sightings of wrasses, flatworms, and Tompot Blenny. Uncommon species such as Common Octopus, European Common Cuttlefish, Comber, and nudibranchs like Felimare villafranca and Felimare fontandraui are also present. Rarer encounters include gurnard, squat lobster, scorpionfish, slipper lobster, and the tricolor doris. The site features slopes where John Dory are frequently observed sheltering among the algae.

Primavera is a reef and wreck site located off Berlenga Grande in the Berlengas Archipelago. Divers typically explore depths between 10 and 24 metres, with an average depth of 18 metres. Access is by boat, and the site is suited for intermediate divers due to mild currents and potential surge. Visibility ranges from 10 to 25 metres, and water temperatures fluctuate between 15C and 18C throughout the year. Marine life recorded at this site includes common wrasses, flatworms, Felimare fontandraui, and Tompot blennies. Less frequently, divers may encounter common octopus, European common cuttlefish, Felimare villafranca, bream, gurnards, squat lobsters, slipper lobsters, scorpionfish, tricolor doris, and barried anemones.

Cova dos Ratões is situated on the northern side of Berlenga Grande. This site is sheltered from southern winds, providing calmer conditions when other areas are rough. The underwater topography consists of large boulders and canyons. Snorkellers can explore these features, which offer a distinct environment within the Berlengas Archipelago. Access to the site is by boat. Water temperatures range from 15C to 19C throughout the year. Due to the nature of the terrain and conditions, this site is best suited for intermediate snorkellers.

Ilhéu Maldito is a distinctive site located on the east side of Berlenga Grande in the Berlengas Archipelago. The topography features a combination of reef, wall, and cave systems, including the largest cave in the archipelago. Divers can explore depths ranging from 5 to 20 metres. Access is strictly by boat, and the site is suited for intermediate divers due to the potential for moderate currents and surf. Visibility varies significantly, ranging from 6 to 30 metres. Water temperatures fluctuate between 15C and 19C throughout the year. The site is known for its challenging conditions during inclement weather.

Berlenga Grande offers a diverse underwater environment featuring reefs, walls, caverns, and wrecks. Located in the Berlengas Archipelago, this site requires boat access and is suitable for experienced divers due to potential strong currents, surf, and overhead environments. Depths range from 5 to 40 metres, with an average of 25 metres. Visibility varies significantly between 6 and 30 metres, and water temperatures remain cool, fluctuating between 15C and 18C throughout the year. Divers should be aware of boat traffic in the area. Facilities including equipment rental, air fills, and boat charters are available to support diving activities at this location.