The Reijin is a shallow wreck located 200 metres off the coast of Porto, Portugal. Resting at depths between 5 and 12 metres with an average of 8 metres, this site is suitable for beginner divers. Access is by boat, and the site features mild currents. Divers should be aware of the risk of entanglement due to exposed metal and lines on the wreck structure. Visibility can be variable, so carrying a torch is recommended to inspect the wreck details. Water temperatures range from 14 to 17 degrees Celsius, necessitating the use of a suitable wetsuit.

Senhor da Pedra in Porto is a shore-entry snorkel site defined by an iconic chapel situated on a rocky outcrop. The northern side of this formation features granite boulders and crevices that provide habitat for various Atlantic species. Snorkellers should be prepared for moderate currents, surf, and cold water temperatures ranging from 14°C to 17°C. Due to the presence of rip currents and surf, this site is best suited for intermediate snorkellers. Facilities available at the location include parking, showers, and first aid. Species recorded around this area include common octopus, conger eel, wrasses, crabs, sea stars, tompot blenny, sea hare, snails, shanny, rockpool prawn, and mullet.

Silver Valley is a wreck site located off the coast of Porto, Portugal, resting at a consistent depth of 14 metres. This site is accessible by boat only and is suited for intermediate divers due to the presence of moderate to strong currents. Divers should maintain good buoyancy control and situational awareness throughout the dive. Given the water temperatures, which range from 14 to 17 degrees Celsius, adequate thermal protection such as a 7mm wetsuit is essential. Divers are advised to time their descent around slack water and use a surface marker buoy to remain visible to boat traffic.

The Barcaça wreck is a shallow dive site located in Porto, Portugal, resting at a consistent depth of 10 metres. This site serves as an accessible wreck dive for open water certified divers, though it requires careful planning due to variable visibility and a moderate current. Divers can access the wreck via boat or shore entry. Given the water temperatures ranging from 14 to 17 degrees Celsius, a wetsuit is necessary. The site features structure that attracts temperate reef fish and invertebrates. Because of active boat traffic in the area, the use of a surface marker buoy is essential for safety during the typical 30-minute dive.

Batelao is a wreck dive located off the coast of Porto, Portugal. The site structure spans depths from 6 to 27 metres, with an average depth of 8 metres. Access is by boat only, as the wreck lies approximately 5556 metres from the shore. Divers should expect moderate currents and visibility limited to 7 metres. Due to the low visibility and potential for entanglement, caution is required when navigating the wreck structure. The site is suitable for beginners, though the cold water temperatures ranging from 14C to 16C require appropriate thermal protection. Night diving is permitted at this location. Species recorded around this area include common octopus, gray seal, wrasses, conger eel, crab, and sea star.

The Marialva is a wreck dive located off the coast of Porto, Portugal. The site reaches depths of up to 24 metres and requires boat access. Divers can expect variable currents and visibility ranging from 10 to 30 metres. The wreck structure presents specific hazards, including potential siltation and overhead environments; entry into swim-throughs should only be attempted by those with appropriate overhead environment training. Water temperatures are cool, consistently between 14 and 16 degrees Celsius, necessitating adequate exposure protection. Species recorded around this area include wrasses, bream, shanny, common sea stars, hermit crabs, European green crabs, and rockpool prawns.

Longas is a shore-entry reef dive located in Porto, Portugal. The site features depths ranging from 5 to 12 metres, with an average depth of 8 metres, making it suitable for beginner divers. Visibility is variable, typically between 5 and 15 metres. Divers should be aware of surge, which can affect proximity to the reef, and take care to avoid sea urchins and sharp rock formations. Water temperatures fluctuate between 14 and 17 degrees Celsius throughout the year. The site is accessible for night diving, though conditions such as current and swell vary, requiring careful planning and the use of a surface marker buoy.

The Jakob Maersk is a large shipwreck located off the coast of Porto, Portugal. Resting at depths between 12 and 15 metres, the site is accessible exclusively by boat. Divers encounter mild currents and visibility typically limited to 5 metres, making a dive torch essential for examining the structure's details. Due to the nature of the wreck, there is a risk of entanglement, requiring good buoyancy control. Surface conditions necessitate caution due to boat traffic, and divers should deploy a surface marker buoy before ascending. This site is suited for intermediate divers who are comfortable with low-visibility conditions and wreck navigation.