Pedras Altas is a boat-access reef and canyon site located off the coast of Lagos, Portugal. The topography features walls and crevices, offering more variety than a flat seabed. Divers can expect depths between 10 and 18 metres, with an average depth of 12 metres. Conditions are generally manageable for beginners due to mild currents, though visibility varies between 5 and 15 metres. Water temperatures range from 15C to 19C throughout the year. Sharp rock is a notable hazard at this site, requiring careful buoyancy control to avoid contact. Facilities at the dive shop include gear storage and a rinse station.

Mosh Wall is a marine wall and reef site in Lagos, Portugal, accessible only by boat. The wall structure begins at a depth of 12 metres and descends to 22 metres, with an average depth of 17 metres. Due to the site layout, it is typically explored over two separate dives. Divers should expect moderate currents and visibility ranging from 5 to 20 metres. Water temperatures fluctuate between 15C and 19C throughout the year. The site is suited for intermediate divers, and local facilities provide air fills, equipment rental, guided tours, and boat charters. Divers should be aware of sharp coral present on the reef.

Praia do Barranco do Martinho is the westernmost cove of the Ponta da Piedade headland in Lagos, Portugal. This site features a combination of reef and cave topography, suitable for intermediate snorkelers. Depths range from 1 to 15 metres, with an average of 7 metres. Access is available from both shore and boat. Conditions vary, with visibility typically between 5 and 20 metres and mild currents. Divers and snorkelers should be aware of potential hazards including boat traffic, cold water, jellyfish, overhead environments, rip currents, sea urchins, stonefish, and surge. Water temperatures fluctuate between 15C and 19C throughout the year.

Praia do Canavial in Lagos is a reef and drift site characterised by an underwater landscape of large boulders and rock slabs fallen from the cliffs. These formations create crevices across the seabed. The site is suitable for intermediate divers and snorkellers, with depths ranging from 1 to 8 metres and an average depth of 4 metres. Access is via the shore, though conditions vary with moderate currents and surf. Visibility typically ranges between 5 and 15 metres. Water temperatures are cold, fluctuating between 15C and 19C throughout the year. Divers should be aware of strong currents and surf hazards when planning a visit.

Ponta da Piedade in Lagos is a limestone coastal site characterised by a labyrinth of sea arches, grottoes, and towering pillars. This marine site is suitable for intermediate snorkellers, offering depths ranging from 1 to 10 metres with an average of 3 metres. Access is available via both shore and boat, with a steep 182-step stone staircase leading to a small fishing anchorage. Conditions vary, with visibility typically between 5 and 15 metres. Be aware of strong currents, surf, and boat traffic in the area. Water temperatures fluctuate between 15C and 19C throughout the year. Facilities at the site include parking, toilets, a cafe, and guided tours.

Martelo is a shallow dive site located off the coast of Lagos, Portugal. Reaching a maximum depth of 11 metres, the site is suitable for beginner divers. Access to the site is by boat, which is required due to the location. Divers should remain aware of boat traffic in the area. Conditions are generally calm, with mild currents reported. Water temperatures range from 15C in March to 19C during the summer months. The site offers a straightforward underwater experience for those looking to explore the coastal topography of the Algarve region.

Ancoras is a versatile dive site located in Lagos, Portugal, featuring a combination of natural reef topography and artificial structures. The site is notable for its archaeological value, containing artifacts dating back to the Roman era. Divers can explore a series of arches that define the underwater landscape. The site is suitable for beginners, with depths ranging from 5 to 18 metres and an average depth of 10 metres. Access is strictly by boat, and divers should remain aware of boat traffic in the area. Conditions are generally stable with mild currents, and water temperatures fluctuate between 15C and 19C throughout the year.

Canavial is a marine reef site located off the coast of Lagos, Portugal. The site is suitable for beginners, offering a shallow average depth of 6 metres with a total depth range between 5 and 8 metres. Divers can expect mild currents throughout the area. Access to this site is exclusively by boat. Water temperatures in the region fluctuate between 15C and 19C depending on the month. Parking facilities are available at the departure point for those travelling to the site.