Praia da Agudela in Porto features a long, semi-submerged rocky reef running parallel to the shore. This formation creates calm micro-pools at low tide, providing a sheltered environment for snorkeling. The site is suitable for beginners, with depths ranging from 1 to 5 metres and an average depth of 3 metres. Entry is via the shore, though snorkelers should be aware of potential surf, rip currents, and cold water temperatures between 14C and 17C. Visibility typically fluctuates between 5 and 15 metres. Facilities at the beach include parking, toilets, and showers to support visitors.

Prego is a reef site located in Porto, Portugal, accessible by both boat and shore. The topography features a reef structure starting at 6 metres and extending to a maximum depth of 30 metres, with an average depth of 16 metres. Divers should be prepared for moderate currents and potential surge in shallower areas. Visibility is variable, ranging from 5 to 30 metres. Water temperatures remain between 14 and 16 degrees Celsius throughout the year, necessitating appropriate thermal protection. The site is suitable for night diving and accommodates beginner divers, though caution is advised regarding sea urchins and surge conditions. Species recorded around this area include wrasses, conger eels, and common octopus.

U-1277 is a German World War II submarine resting upright on the seabed at a constant depth of 30 metres. Located over 3 kilometres from the shore of Porto, this wreck dive requires boat access. Divers experience visibility ranging from 5 to 20 metres and water temperatures between 14 and 16 degrees Celsius. Due to the depth and potential for strong currents, this site is suitable only for advanced divers. Maintaining neutral buoyancy is essential to avoid contact with the wreck structure. An SMB is strongly recommended for all divers to manage surface conditions and boat traffic in the area.

Rodelha is a reef site located off the coast of Porto, Portugal. The reef topography ranges from 5 to 19 metres in depth, with an average depth of 10 metres, making it suitable for beginner divers. Access to the site is by boat only. Divers can expect mild currents and visibility between 5 and 10 metres. Water temperatures are temperate, typically ranging from 14 to 17 degrees Celsius throughout the year. Due to these cooler temperatures, a 7mm wetsuit or drysuit is recommended to maintain comfort and bottom time. Divers should monitor local conditions for currents and maintain a visual watch for boat traffic while at the surface.

The Veronese is a shallow wreck and artificial reef located off the coast of Porto, Portugal. Resting at a consistent depth of 10 metres, this site is accessible via shore entry and is suitable for beginners. Divers can expect mild currents and visibility ranging from 5 to 10 metres. Due to the water temperature, which fluctuates between 14 and 17 degrees Celsius, a 5mm or 7mm wetsuit is recommended. Divers should exercise caution regarding potential entanglement risks within the wreck structure and be mindful of sharp rock and coral features. Typical bottom times are approximately 50 minutes.

Praia de Fuzelhas, located near the Siza Vieira tea house in Porto, offers a snorkelling experience defined by a labyrinth of rock formations. The site features deep gullies between these rocks, which provide shelter for marine life and support vibrant algae colonies. Snorkelling is conducted from the shore with depths typically ranging from 1 to 5 metres, averaging 3 metres. Conditions are generally suitable for beginners, though surf is a known hazard. Water temperatures are cool, ranging from 14C to 17C throughout the year. Facilities available at the site include parking, toilets, showers, and a cafe.

Pelo Negro Rocks is a complex rock formation located 500 metres off the coast of Porto, Portugal. This site features a diverse topography of reefs, walls, and canyons with vertical structures reaching up to 4 metres in height. Depths at the site range between 8 and 20 metres. Access is strictly by boat due to the distance from shore and the presence of moderate to strong currents. The water temperature remains cool throughout the year, typically fluctuating between 14C and 16C. Given the challenging current conditions, this site is recommended for advanced divers, though it is also rated for snorkelling.

Pelo Negro is a rocky reef located 1500 metres off the coast of Porto, Portugal. This site features a depth range of 8 to 20 metres, with an average depth of 15 metres. Divers must access the reef by boat. Conditions include mild but variable currents and visibility ranging from 5 to 30 metres. The water temperature remains cool, between 14 and 16 degrees Celsius throughout the year, necessitating appropriate thermal protection. Due to active boat traffic on the surface, divers should use a surface marker buoy during ascents. The reef topography consists of sharp, rocky structures requiring careful buoyancy control. This site is suitable for intermediate divers.