Mina Mari is a wreck dive located 4828 metres off the coast of Spain. Resting at depths between 33 and 37 metres, this site is reserved for advanced divers. Access is strictly by boat, and the site is characterised by moderate currents and visibility ranging from 5 to 10 metres. Water temperatures fluctuate between 13C and 19C throughout the year. Due to the significant depth and potential for shifting conditions, divers must maintain strict buoyancy control and monitor pressure gauges closely. Nitrox is a mandatory requirement for this dive. Typical bottom time is approximately 30 minutes, requiring careful management of decompression obligations.

Guetaria Beach features a combination of artificial reef structures and seagrass beds, providing two distinct habitats in depths of 8 to 11 metres. This shore-entry site is suitable for beginners, offering mild currents and visibility ranging from 10 to 30 metres. Divers can encounter common species such as wrasses and various snails, alongside less frequent sightings of marbled electric rays, grey triggerfish, scorpionfish, crabs, tube worms, sea stars, tompot blennies, and sea squirts. The site is accessible year-round and supports night diving. Due to its status as a multi-use area, divers should remain vigilant regarding boat traffic and exercise caution to avoid entanglement in the seagrass.

Raton de Guetaria is a reef site located 300 metres off the coast of San Sebastian. The reef topography ranges from 5 to 20 metres in depth, with an average of 15 metres, making it suitable for beginner divers. Access is by boat, and the site experiences mild currents. Visibility typically ranges between 5 and 10 metres. Water temperatures fluctuate from 13C to 21C, necessitating a thicker wetsuit outside of the summer months. Divers should remain vigilant for boat traffic when surfacing and carry a cutting tool to manage potential entanglement risks near the reef structures. Guided tours are available through local dive shops.

Menakoz is a reef site in the Cantabrico region that extends into deep water, with depths ranging from 18 to 40 metres. The site is strictly for advanced divers due to moderate currents and the necessity of boat access to avoid the hazardous shore break. Visibility typically remains between 5 and 10 metres, requiring careful navigation. Water temperatures fluctuate between 13 and 17 degrees Celsius, necessitating appropriate thermal protection. Night diving is possible for those who plan carefully. Divers should monitor conditions closely, as Atlantic swell can impact the site with little warning. Timing dives around slack water is recommended to manage the current effectively.

Culebras is a reef dive site located in Spain, accessible exclusively by boat. The site features a rocky bass formation with depths ranging from 18 to 28 metres, averaging 22 metres. Divers should be prepared for moderate currents and potential hazards including entanglement and low visibility. The site is suitable for intermediate divers, with typical dives lasting around 45 minutes. Night diving is permitted at this location. The habitat supports a variety of reef fish and invertebrates typical of the region. Facilities available at the site include air fills, changing rooms, showers, and boat charter services.

Pikatxilla is a combined wall and wreck dive located in the Cantabric Sea near San Sebastian. The site features a vertical profile dropping from 3 to 32 metres, with an average depth of 25 metres. Divers encounter a mix of wall topography and wreck structures, which require caution due to entanglement risks. Conditions include mild currents and visibility ranging from 5 to 10 metres. Water temperatures fluctuate between 12C and 19C throughout the year, necessitating appropriate thermal protection. Given the depth and potential for variable visibility, this site is suited for intermediate divers. Boat access is required, and divers should monitor the sea state for surf conditions before entry.

Las Langostas is a deep wall dive in the Cantabric Sea, featuring a vertical drop that extends from 20 to 40 metres. Divers encounter moderate currents along the wall face, requiring precise buoyancy control and drift management. Due to the significant depth and potential for strong currents, this site is strictly for advanced divers. Access is exclusively by boat to avoid hazardous surf conditions near the shore. Water temperatures fluctuate between 12 and 18 degrees Celsius throughout the year. Divers should plan bottom times conservatively and carry a surface marker buoy to account for the current, which may push divers away from the wall during ascent.

Las Grietas offers a diverse underwater landscape featuring a combination of reef, wall, and cave structures. Divers can explore depths reaching 20 metres, with visibility typically around 10 metres. The site is suited for intermediate divers due to variable currents that can intensify near the wall sections. Boat access is required to reach the site, where divers should remain vigilant regarding boat traffic during ascents and surface intervals. Proper line management is essential to avoid entanglement within the crevices and reef structures. On-site facilities include air fills, equipment rental, and changing rooms with showers.