Amorosa is a marine site located off the coast of Viana do Castelo, Portugal, featuring a combination of natural reef and artificial reef structures. The site is suited for intermediate divers, with depths ranging between 15 and 25 metres. Visibility is typically between 5 and 10 metres, and water temperatures remain cool, between 14 and 16 degrees Celsius. Access is by boat only. Divers should be aware of mild currents and the potential for rip currents. Due to the cool Atlantic water, adequate thermal protection such as a 7mm wetsuit or drysuit is necessary. The habitat supports a variety of regional marine life and invertebrates.

Praia de Carreço in Viana do Castelo is a rocky reef site offering snorkelling opportunities with depths ranging from 2 to 10 metres, averaging 5 metres. Located near the Montedor Lighthouse, the area features deep pools and distinct rocky topography that provides higher visibility than the sandy beaches to the south. Conditions are variable, with visibility spanning 5 to 25 metres and mild currents. The water temperature is cold, typically ranging between 14 and 17 degrees Celsius throughout the year. Access is via the shore, and the site includes facilities such as parking and showers. This location is suited for intermediate snorkellers.

Parcel is a reef located off the coast of Viana do Castelo, Portugal. Reached exclusively by boat, the site features a reef structure spanning depths of 18 to 22 metres. Divers should expect moderate currents that can shift with the tide, requiring careful planning of air consumption and buoyancy control to navigate the sharp rock and reef edges. Visibility typically ranges from 10 to 25 metres. Water temperatures are cool, fluctuating between 14 and 17 degrees Celsius throughout the year. Due to the depth and current conditions, this site is suited for intermediate divers. Always remain vigilant for surface boat traffic, as the area is used by local vessels.

Praia de Rio de Moinhos in Viana do Castelo is a shallow reef and kelp forest site characterised by a rugged, pebbly beach entry. The seabed features rocky formations exposed by sea erosion, supporting patches of kelp. Diving here is suitable for beginners, with depths ranging from 2 to 5 metres and an average depth of 3 metres. Conditions are variable, with visibility between 3 and 15 metres and mild currents. Water temperatures remain cool throughout the year, typically between 14C and 17C, making a wetsuit necessary for comfort. Divers should be aware of surf conditions at this shore-entry site. Parking is available nearby.

Forcadinho is a rocky reef and kelp forest site located off the coast of Viana do Castelo, Portugal. The topography features a layered habitat created by the kelp, which is characteristic of this Atlantic temperate region. Divers can expect moderate currents, though conditions can shift to strong without warning, making careful assessment with the boat skipper essential before entry. Visibility typically ranges between 5 and 10 metres. Water temperatures remain between 14 and 17 degrees Celsius throughout the year. Due to the nature of the site and potential current hazards, this location is suited for intermediate divers. All equipment must be brought onboard, as there are no confirmed facilities at the site.

Cavalos de Fão is a submerged reef composed of Ordovician quartzite rocks located approximately 550 metres offshore from Póvoa de Varzim. The site features dramatic rock structures that break the surface at low tide. Conditions are challenging, with strong currents and surf, making this an advanced site. Water temperatures typically range between 14C and 17C, necessitating appropriate thermal protection to mitigate the risk of hypothermia. Access is possible by both boat and shore, though divers and snorkellers must remain vigilant regarding rip currents and sea urchins. Facilities available at the location include parking, toilets, showers, changing rooms, a rinse station, and a cafe.

Moinhos is a rocky reef and kelp forest located off the Costa Verde coast near Esposende. Divers can explore this site at depths between 18 and 20 metres. The kelp provides structural shelter, creating distinct areas to navigate. Conditions include mild currents and visibility ranging from 10 to 30 metres. Access is strictly by boat, and divers should remain alert for boat traffic in the area. Water temperatures fluctuate between 14 and 17 degrees Celsius, making a 5mm wetsuit with hood and gloves recommended. Due to the presence of sea urchins and sharp reef structures, maintain precise buoyancy control throughout the dive.

Baixo da Pena is a shallow reef located off the coast of Póvoa de Varzim, Portugal. The site features a depth range from the surface down to 8 metres, providing a suitable environment for beginner divers. Access to the reef is by boat. Visibility typically ranges between 5 and 10 metres, though conditions can vary. Water temperatures remain between 14 and 17 degrees Celsius throughout the year, necessitating the use of a wetsuit. While currents are generally mild, stronger flows can occur, and divers should remain alert for boat traffic when surfacing. Equipment rental and guided tours are available to assist with navigation and safety.